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    <tt>Hi Geoffrey,</tt><tt><br>
    </tt><tt><br>
    </tt><tt>Sorry for the delayed response. We will look at the log
      files you provided in your previous email and update you the
      workaround as soon as possible.</tt><tt><br>
    </tt><tt><br>
    </tt><tt>Thanks,</tt><tt><br>
    </tt><tt>Vijay</tt><br>
    <br>
    <br>
    <div class="moz-cite-prefix">On Thursday 11 June 2015 05:43 PM,
      Geoffrey Letessier wrote:<br>
    </div>
    <blockquote cite="mid:06A0EDE3-2CD8-45B1-95DF-4BD0AB7FBECA@cnrs.fr"
      type="cite">
      <meta http-equiv="Content-Type" content="text/html;
        charset=windows-1252">
      Hi Vijay,
      <div class=""><br class="">
      </div>
      <div class="">Could you take a time to take a look at this? I
        found only one thing about my issues in Red Hat bugzilla (<a
          moz-do-not-send="true"
          href="https://bugzilla.redhat.com/show_bug.cgi?id=917901"
          class="">https://bugzilla.redhat.com/show_bug.cgi?id=917901</a>)
        But, my storage &amp; computing clusters are still in production
        now and I wonder if I should warn my community about of a needed
        production break or can I  apply a fix during production? (i.e.
        without updating my GlusterFS version on my storage cluster).</div>
      <div class=""><br class="">
      </div>
      <div class="">Thanks in advance,</div>
      <div class="">Geoffrey<br class="">
        <div apple-content-edited="true" class="">
          <div style="color: rgb(0, 0, 0); letter-spacing: normal;
            orphans: auto; text-align: start; text-indent: 0px;
            text-transform: none; white-space: normal; widows: auto;
            word-spacing: 0px; -webkit-text-stroke-width: 0px;
            word-wrap: break-word; -webkit-nbsp-mode: space;
            -webkit-line-break: after-white-space;" class="">------------------------------------------------------<br
              class="">
            Geoffrey Letessier<br class="">
            Responsable informatique &amp; ingénieur système<br class="">
            UPR 9080 - CNRS - Laboratoire de Biochimie Théorique<br
              class="">
            Institut de Biologie Physico-Chimique<br class="">
            13, rue Pierre et Marie Curie - 75005 Paris<br class="">
            Tel: 01 58 41 50 93 - eMail: <a moz-do-not-send="true"
              href="mailto:geoffrey.letessier@ibpc.fr" class="">geoffrey.letessier@ibpc.fr</a></div>
        </div>
        <br class="">
        <div>
          <blockquote type="cite" class="">
            <div class="">Le 10 juin 2015 à 06:12, Vijaikumar M &lt;<a
                moz-do-not-send="true" href="mailto:vmallika@redhat.com"
                class="">vmallika@redhat.com</a>&gt; a écrit :</div>
            <br class="Apple-interchange-newline">
            <div class="">
              <meta content="text/html; charset=windows-1252"
                http-equiv="Content-Type" class="">
              <div text="#000000" bgcolor="#FFFFFF" class=""> <tt
                  class="">Hi Geoffrey,</tt><tt class=""><br class="">
                </tt><tt class=""><br class="">
                </tt><tt class="">grep for 'ERROR' from the log file,
                  and only these lines would be sufficient.</tt><tt
                  class=""><br class="">
                </tt><tt class=""><br class="">
                </tt><tt class="">Thanks,</tt><tt class=""><br class="">
                </tt><tt class="">Vijay</tt><br class="">
                <br class="">
                <br class="">
                <div class="moz-cite-prefix">On Wednesday 10 June 2015
                  04:38 AM, Geoffrey Letessier wrote:<br class="">
                </div>
                <blockquote
                  cite="mid:C6B2CB51-209E-454E-BF5A-08323449338A@cnrs.fr"
                  type="cite" class="">
                  <meta http-equiv="Content-Type" content="text/html;
                    charset=windows-1252" class="">
                  Hello Vijay,
                  <div class=""><br class="">
                  </div>
                  <div class="">Quota-verify is still running since a
                    couple of hours (more than 10) and each output file
                    sizes (4 files because 4 bricks per replica) are
                    very huge: around 800MB per file in the first server
                    and 5GB per file in the second one. Do your still
                    want these? How can I send it to you?</div>
                  <div class=""><br class="">
                  </div>
                  <div class="">Nice night (in France)</div>
                  <div class="">Geoffrey<br class="">
                    <div apple-content-edited="true" class="">
                      ------------------------------------------------------<br
                        class="">
                      Geoffrey Letessier<br class="">
                      Responsable informatique &amp; ingénieur système<br
                        class="">
                      UPR 9080 - CNRS - Laboratoire de Biochimie
                      Théorique<br class="">
                      Institut de Biologie Physico-Chimique<br class="">
                      13, rue Pierre et Marie Curie - 75005 Paris<br
                        class="">
                      Tel: 01 58 41 50 93 - eMail: <a
                        moz-do-not-send="true"
                        href="mailto:geoffrey.letessier@ibpc.fr"
                        class="">geoffrey.letessier@ibpc.fr</a> </div>
                    <br class="">
                    <div class="">
                      <div class="">Le 9 juin 2015 à 12:46, Vijaikumar M
                        &lt;<a moz-do-not-send="true"
                          href="mailto:vmallika@redhat.com" class="">vmallika@redhat.com</a>&gt;

                        a écrit :</div>
                      <br class="Apple-interchange-newline">
                      <blockquote type="cite" class="">
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                          <tt class="">Hi Geoffrey,</tt><tt class=""><br
                              class="">
                          </tt><tt class=""><br class="">
                          </tt><tt class="">The file content deletion is
                            because of 'vi editor' behaviour of
                            truncating the file when writing the updated
                            content.</tt><tt class=""><br class="">
                          </tt><tt class=""><br class="">
                          </tt><tt class="">Regarding quota size/usage
                            problem, can you please execute the script
                            attached on each brick and provide us the
                            output generated, this will help us analyse
                            why quota list is showing wrong-size.</tt><tt
                            class=""><br class="">
                          </tt>
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                            class="">
                          <tt class="">The script basically crawls the
                            directory given as argument.</tt><tt
                            class=""><br class="">
                          </tt><tt class="">It collects quota "contri"
                            and "size" extended attribute and also
                            "block size" from stat call.</tt><tt
                            class=""><br class="">
                          </tt><tt class=""><br class="">
                          </tt><tt class="">Usage:</tt><tt class=""><br
                              class="">
                          </tt><tt class=""><br class="">
                          </tt><tt class="">./quota-verify -b
                            &lt;brick_path&gt; | tee brick_name.log</tt><tt
                            class=""><br class="">
                          </tt><tt class=""><br class="">
                          </tt><tt class=""><br class="">
                          </tt><tt class="">Thanks,</tt><tt class=""><br
                              class="">
                          </tt><tt class="">Vijay</tt><tt class=""><br
                              class="">
                          </tt><tt class=""><br class="">
                          </tt><br class="">
                          <br class="">
                          <div class="moz-cite-prefix">On Tuesday 09
                            June 2015 03:45 PM, Vijaikumar M wrote:<br
                              class="">
                          </div>
                          <blockquote
                            cite="mid:5576BCBB.7020502@redhat.com"
                            type="cite" class="">
                            <meta content="text/html;
                              charset=windows-1252"
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                            <br class="">
                            <br class="">
                            <div class="moz-cite-prefix">On Tuesday 09
                              June 2015 03:40 PM, Geoffrey Letessier
                              wrote:<br class="">
                            </div>
                            <blockquote
                              cite="mid:EF13613C-0262-4E26-A146-920746BBB363@cnrs.fr"
                              type="cite" class="">
                              <meta http-equiv="Content-Type"
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                              Hi Vijay,
                              <div class=""><br class="">
                              </div>
                              <div class="">Thanks for having replied.</div>
                              <div class=""><br class="">
                              </div>
                              <div class="">Unfortunately, i check each
                                bricks on my stockage pool and dont find
                                any backup file.. damage!</div>
                            </blockquote>
                            <tt class=""><br class="">
                            </tt><tt class="">Please check backup file
                              on client machine where the file was
                              edited and on the home dir of a user (this
                              is the user login </tt><tt class="">used
                              to edit a file</tt><tt class="">).</tt><tt
                              class=""><br class="">
                            </tt><tt class=""><br class="">
                            </tt><tt class="">Thanks,</tt><tt class=""><br
                                class="">
                            </tt><tt class="">Vijay</tt><br class="">
                            <br class="">
                            <br class="">
                            <blockquote
                              cite="mid:EF13613C-0262-4E26-A146-920746BBB363@cnrs.fr"
                              type="cite" class="">
                              <div class=""><br class="">
                              </div>
                              <div class="">Thank you again!</div>
                              <div class="">Good luck and see you,</div>
                              <div class="">Geoffrey<br class="">
                                <div apple-content-edited="true"
                                  class="">
                                  <div style="letter-spacing: normal;
                                    orphans: auto; text-align: start;
                                    text-indent: 0px; text-transform:
                                    none; white-space: normal; widows:
                                    auto; word-spacing: 0px;
                                    -webkit-text-stroke-width: 0px;
                                    word-wrap: break-word;
                                    -webkit-nbsp-mode: space;
                                    -webkit-line-break:
                                    after-white-space;" class="">------------------------------------------------------<br
                                      class="">
                                    Geoffrey Letessier<br class="">
                                    Responsable informatique &amp;
                                    ingénieur système<br class="">
                                    UPR 9080 - CNRS - Laboratoire de
                                    Biochimie Théorique<br class="">
                                    Institut de Biologie
                                    Physico-Chimique<br class="">
                                    13, rue Pierre et Marie Curie -
                                    75005 Paris<br class="">
                                    Tel: 01 58 41 50 93 - eMail: <a
                                      moz-do-not-send="true"
                                      href="mailto:geoffrey.letessier@ibpc.fr"
                                      class="">geoffrey.letessier@ibpc.fr</a></div>
                                </div>
                                <br class="">
                                <div class="">
                                  <blockquote type="cite" class="">
                                    <div class="">Le 9 juin 2015 à
                                      10:05, Vijaikumar M &lt;<a
                                        moz-do-not-send="true"
                                        href="mailto:vmallika@redhat.com"
                                        class="">vmallika@redhat.com</a>&gt;


                                      a écrit :</div>
                                    <br
                                      class="Apple-interchange-newline">
                                    <div class="">
                                      <meta content="text/html;
                                        charset=windows-1252"
                                        http-equiv="Content-Type"
                                        class="">
                                      <div bgcolor="#FFFFFF"
                                        text="#000000" class=""> <br
                                          class="">
                                        <br class="">
                                        <div class="moz-cite-prefix">On
                                          Tuesday 09 June 2015 01:08 PM,
                                          Geoffrey Letessier wrote:<br
                                            class="">
                                        </div>
                                        <blockquote
                                          cite="mid:A2852C15-BF63-421F-A730-EA03D983CFBE@cnrs.fr"
                                          type="cite" class="">
                                          <meta
                                            http-equiv="Content-Type"
                                            content="text/html;
                                            charset=windows-1252"
                                            class="">
                                          Hi,
                                          <div class=""><br class="">
                                          </div>
                                          <div class="">Yes of course:</div>
                                          <div class="">
                                            <div style="margin: 0px;
                                              font-size: 11px;
                                              font-family: Menlo; color:
                                              rgb(255, 255, 255);
                                              background-color: rgb(0,
                                              0, 0);" class="">[root@lucifer

                                              ~]# pdsh -w
                                              cl-storage[1,3] du -s
                                              /export/brick_home/brick*/amyloid_team</div>
                                            <div style="margin: 0px;
                                              font-size: 11px;
                                              font-family: Menlo; color:
                                              rgb(255, 255, 255);
                                              background-color: rgb(0,
                                              0, 0);" class="">cl-storage1:

                                              1608522280<span
                                                class="Apple-tab-span"
                                                style="white-space:pre">
                                              </span>/export/brick_home/brick1/amyloid_team</div>
                                            <div style="margin: 0px;
                                              font-size: 11px;
                                              font-family: Menlo; color:
                                              rgb(255, 255, 255);
                                              background-color: rgb(0,
                                              0, 0);" class="">cl-storage3:

                                              1619630616<span
                                                class="Apple-tab-span"
                                                style="white-space:pre">
                                              </span>/export/brick_home/brick1/amyloid_team</div>
                                            <div style="margin: 0px;
                                              font-size: 11px;
                                              font-family: Menlo; color:
                                              rgb(255, 255, 255);
                                              background-color: rgb(0,
                                              0, 0);" class="">cl-storage1:

                                              1614057836<span
                                                class="Apple-tab-span"
                                                style="white-space:pre">
                                              </span>/export/brick_home/brick2/amyloid_team</div>
                                            <div style="margin: 0px;
                                              font-size: 11px;
                                              font-family: Menlo; color:
                                              rgb(255, 255, 255);
                                              background-color: rgb(0,
                                              0, 0);" class="">cl-storage3:

                                              1602653808<span
                                                class="Apple-tab-span"
                                                style="white-space:pre">
                                              </span>/export/brick_home/brick2/amyloid_team</div>
                                            <div class=""><br class="">
                                            </div>
                                            <div class="">The sum
                                              is: 6444864540 (around
                                              6.4-6.5TB) while the quota
                                              list displays 7.7TB.</div>
                                            <div class="">So, the
                                              mistake is roughly
                                              1.2-1.3TB, in other words
                                              around 16% -which is too
                                              huge, no?</div>
                                            <div class=""><br class="">
                                            </div>
                                            <div class="">In addition,
                                              since the quota is
                                              exceeded, i note a lot of
                                              files like following:</div>
                                            <div class="">
                                              <div style="margin: 0px;
                                                font-size: 11px;
                                                font-family: Menlo;
                                                color: rgb(255, 255,
                                                255); background-color:
                                                rgb(0, 0, 0);" class="">[root@lucifer
                                                ~]# pdsh -w
                                                cl-storage[1,3] "cd
                                                /export/brick_home/brick2/amyloid_team/tarus/project/ab1-40-x1_sen304-x2_inh3-x2/remd_charmm22star_scripts/;




                                                ls -ail remd_100.sh
                                                2&gt; /dev/null"
                                                2&gt;/dev/null</div>
                                              <div style="margin: 0px;
                                                font-size: 11px;
                                                font-family: Menlo;
                                                color: rgb(255, 255,
                                                255); background-color:
                                                rgb(0, 0, 0);" class="">cl-storage3:
                                                133325688 ---------T 2
                                                tarus amyloid_team 0 16
                                                févr. 10:20 remd_100.sh</div>
                                            </div>
                                            <div class="">note the ’T’
                                              at the end of perms and
                                              the file size to 0B.</div>
                                            <div class=""><br class="">
                                            </div>
                                            <div class="">And,
                                              yesterday, some files were
                                              duplicated but not
                                              anymore...</div>
                                            <div class=""><br class="">
                                            </div>
                                            <div class="">The worst is,
                                              previously, all these
                                              files were OK. In other
                                              words, exceeding quota
                                              made file or content
                                              deletions or corruptions…
                                              What can I do to prevent
                                              to situation for the futur
                                              -because I guess i cannot
                                              do something to rollback
                                              this situation now, right?</div>
                                            <div class=""><br class="">
                                            </div>
                                          </div>
                                        </blockquote>
                                        <tt class=""><br class="">
                                          Hi </tt><tt class="">Geoffrey,</tt><tt
                                          class=""><br class="">
                                        </tt><tt class=""><br class="">
                                        </tt><tt class="">I tried
                                          re-creating the problem.<br
                                            class="">
                                          <br class="">
                                          Here is the behaviour of vi
                                          editor.</tt><tt class=""><br
                                            class="">
                                        </tt><tt class="">When a file is
                                          saved in vi editor, it creates
                                          a backup file under home dir
                                          and opens the original file
                                          with 'O_TRUNC' flag and hence
                                          file was truncated.</tt><tt
                                          class=""><br class="">
                                        </tt><tt class=""><br class="">
                                          <br class="">
                                          Here is the strace of vi
                                          editor when it gets 'EDQUOT'
                                          error:</tt><tt class=""><br
                                            class="">
                                        </tt><tt class=""><br class="">
                                        </tt><tt class="">open("hello",
                                          O_WRONLY|O_CREAT|O_TRUNC,
                                          0644) = 3</tt><tt class=""><br
                                            class="">
                                        </tt><tt class="">write(3, "line
                                          one\nline two\n", 18)    = 18</tt><tt
                                          class=""><br class="">
                                        </tt><tt class="">fsync(3)                               



                                          = 0</tt><tt class=""><br
                                            class="">
                                        </tt><tt class="">close(3)                               



                                          = -1 EDQUOT (Disk quota
                                          exceeded)</tt><tt class=""><br
                                            class="">
                                        </tt><tt class="">chmod("hello",
                                          0100644)                 = 0</tt><tt
                                          class=""><br class="">
                                        </tt><tt class="">open("/root/hello~",

                                          O_RDONLY)          = 3</tt><tt
                                          class=""><br class="">
                                        </tt><b class=""><tt class="">open("hello",

                                            O_WRONLY|O_CREAT|O_TRUNC,
                                            0644) = 7</tt></b><tt
                                          class=""><br class="">
                                        </tt><tt class="">read(3, "line
                                          one\n", 256)              = 9</tt><tt
                                          class=""><br class="">
                                        </tt><tt class="">write(7, "line
                                          one\n", 9)               = 9</tt><tt
                                          class=""><br class="">
                                        </tt><tt class="">read(3, "",
                                          256)                        =
                                          0</tt><tt class=""><br
                                            class="">
                                        </tt><tt class="">close(7)                               



                                          = -1 EDQUOT (Disk quota
                                          exceeded)</tt><tt class=""><br
                                            class="">
                                        </tt><tt class="">close(3)                               



                                          = 0</tt><tt class=""><br
                                            class="">
                                        </tt><tt class=""><br class="">
                                        </tt><tt class=""><br class="">
                                        </tt><tt class="">To re-cover
                                          the truncated file, please
                                          find if there are any backup
                                          file 'remd_115.sh~' under '~/'
                                          or on the same dir where this
                                          file exists.</tt><tt class="">
                                          If exists you can copy this
                                          file.<br class="">
                                        </tt><tt class=""><br class="">
                                        </tt><tt class="">Thanks,</tt><tt
                                          class=""><br class="">
                                        </tt><tt class="">Vijay</tt><br
                                          class="">
                                        <br class="">
                                        <br class="">
                                        <blockquote
                                          cite="mid:A2852C15-BF63-421F-A730-EA03D983CFBE@cnrs.fr"
                                          type="cite" class="">
                                          <div class="">
                                            <div class="">Geoffrey</div>
                                            <div class="">------------------------------------------------------</div>
                                            <div
                                              apple-content-edited="true"
                                              class="">
                                              <div
                                                style="letter-spacing:
                                                normal; orphans: auto;
                                                text-align: start;
                                                text-indent: 0px;
                                                text-transform: none;
                                                white-space: normal;
                                                widows: auto;
                                                word-spacing: 0px;
                                                -webkit-text-stroke-width:
                                                0px; word-wrap:
                                                break-word;
                                                -webkit-nbsp-mode:
                                                space;
                                                -webkit-line-break:
                                                after-white-space;"
                                                class="">Geoffrey
                                                Letessier<br class="">
                                                Responsable
                                                informatique &amp;
                                                ingénieur système<br
                                                  class="">
                                                UPR 9080 - CNRS -
                                                Laboratoire de
                                                Biochimie Théorique<br
                                                  class="">
                                                Institut de Biologie
                                                Physico-Chimique<br
                                                  class="">
                                                13, rue Pierre et Marie
                                                Curie - 75005 Paris<br
                                                  class="">
                                                Tel: 01 58 41 50 93 -
                                                eMail: <a
                                                  moz-do-not-send="true"
href="mailto:geoffrey.letessier@ibpc.fr" class="">geoffrey.letessier@ibpc.fr</a></div>
                                            </div>
                                            <br class="">
                                            <div class="">
                                              <blockquote type="cite"
                                                class="">
                                                <div class="">Le 9 juin
                                                  2015 à 09:01,
                                                  Vijaikumar M &lt;<a
                                                    moz-do-not-send="true"
href="mailto:vmallika@redhat.com" class="">vmallika@redhat.com</a>&gt; a
                                                  écrit :</div>
                                                <br
                                                  class="Apple-interchange-newline">
                                                <div class="">
                                                  <meta
                                                    content="text/html;
charset=windows-1252" http-equiv="Content-Type" class="">
                                                  <div bgcolor="#FFFFFF"
                                                    text="#000000"
                                                    class=""> <br
                                                      class="">
                                                    <br class="">
                                                    <div
                                                      class="moz-cite-prefix">On

                                                      Monday 08 June
                                                      2015 07:11 PM,
                                                      Geoffrey Letessier
                                                      wrote:<br class="">
                                                    </div>
                                                    <blockquote
                                                      cite="mid:C9DA5829-C3CB-43FD-BF65-A60A6E1F14E6@cnrs.fr"
                                                      type="cite"
                                                      class="">
                                                      <meta
                                                        http-equiv="Content-Type"
                                                        content="text/html;
charset=windows-1252" class="">
                                                      In addition, i
                                                      notice a very big
                                                      difference between
                                                      the sum of DU on
                                                      each brick and
                                                      « quota list »
                                                      display, as you
                                                      can read below:
                                                      <div class="">
                                                        <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">[root@lucifer

                                                          ~]# pdsh -w
                                                          cl-storage[1,3]
                                                          du -sh
                                                          /export/brick_home/brick*/amyloid_team</div>
                                                        <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">cl-storage1:

                                                          1,6T<span
                                                          class="Apple-tab-span"
style="white-space:pre"> </span>/export/brick_home/brick1/amyloid_team</div>
                                                        <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">cl-storage3:

                                                          1,6T<span
                                                          class="Apple-tab-span"
style="white-space:pre"> </span>/export/brick_home/brick1/amyloid_team</div>
                                                        <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">cl-storage1:

                                                          1,6T<span
                                                          class="Apple-tab-span"
style="white-space:pre"> </span>/export/brick_home/brick2/amyloid_team</div>
                                                        <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">cl-storage3:

                                                          1,6T<span
                                                          class="Apple-tab-span"
style="white-space:pre"> </span>/export/brick_home/brick2/amyloid_team</div>
                                                        <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">[root@lucifer

                                                          ~]# gluster
                                                          volume quota
                                                          vol_home list
                                                          /amyloid_team</div>
                                                        <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">     
                                                                     
                                                          Path          
                                                                 
                                                          Hard-limit
                                                          Soft-limit  
                                                          Used 
                                                          Available</div>
                                                        <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">--------------------------------------------------------------------------------</div>
                                                        <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">/amyloid_team 

                                                                       
                                                                       
                                                          9.0TB      
                                                          90%      
                                                          7.8TB   1.2TB</div>
                                                        <div class=""><br
                                                          class="">
                                                        </div>
                                                        <div class="">As
                                                          you can
                                                          notice, the
                                                          sum of all
                                                          bricks gives
                                                          me roughly
                                                          6.4TB and
                                                          « quota list »
                                                          around 7.8TB;
                                                          so there is a
                                                          difference of
                                                          1.4TB i’m not
                                                          able to
                                                          explain… Do
                                                          you have any
                                                          idea?</div>
                                                        <div class=""><br
                                                          class="">
                                                        </div>
                                                      </div>
                                                    </blockquote>
                                                    <br class="">
                                                    <tt class="">There
                                                      were few issues
                                                      when quota
                                                      accounting </tt><tt
                                                      class="">the size,
                                                      we have fixed </tt><tt
                                                      class="">some of
                                                      these issues in
                                                      3.7</tt><tt
                                                      class=""><br
                                                        class="">
                                                    </tt><tt class="">'df
                                                      -h</tt><tt
                                                      class="">' will
                                                      round off the
                                                      values, can you
                                                      please provide the
                                                      output of 'df'
                                                      without -h option?</tt><tt
                                                      class=""><br
                                                        class="">
                                                    </tt><br class="">
                                                    <br class="">
                                                    <br class="">
                                                    <br class="">
                                                    <blockquote
                                                      cite="mid:C9DA5829-C3CB-43FD-BF65-A60A6E1F14E6@cnrs.fr"
                                                      type="cite"
                                                      class="">
                                                      <div class="">
                                                        <div class="">Thanks,</div>
                                                        <div class="">Geoffrey</div>
                                                        <div
                                                          apple-content-edited="true"
                                                          class="">
                                                          <div
                                                          style="letter-spacing:
                                                          normal;
                                                          orphans: auto;
                                                          text-align:
                                                          start;
                                                          text-indent:
                                                          0px;
                                                          text-transform:
                                                          none;
                                                          white-space:
                                                          normal;
                                                          widows: auto;
                                                          word-spacing:
                                                          0px;
                                                          -webkit-text-stroke-width:
                                                          0px;
                                                          word-wrap:
                                                          break-word;
                                                          -webkit-nbsp-mode:
                                                          space;
                                                          -webkit-line-break:
after-white-space;" class="">------------------------------------------------------<br
                                                          class="">
                                                          Geoffrey
                                                          Letessier<br
                                                          class="">
                                                          Responsable
                                                          informatique &amp;
                                                          ingénieur
                                                          système<br
                                                          class="">
                                                          UPR 9080 -
                                                          CNRS -
                                                          Laboratoire de
Biochimie Théorique<br class="">
                                                          Institut de
                                                          Biologie
                                                          Physico-Chimique<br
                                                          class="">
                                                          13, rue Pierre
                                                          et Marie Curie
                                                          - 75005 Paris<br
                                                          class="">
                                                          Tel: 01 58 41
                                                          50 93 -
                                                          eMail: <a
                                                          moz-do-not-send="true"
href="mailto:geoffrey.letessier@ibpc.fr" class="">geoffrey.letessier@ibpc.fr</a></div>
                                                        </div>
                                                        <br class="">
                                                        <div class="">
                                                          <blockquote
                                                          type="cite"
                                                          class="">
                                                          <div class="">Le
                                                          8 juin 2015 à
                                                          14:30,
                                                          Geoffrey
                                                          Letessier &lt;<a
moz-do-not-send="true" href="mailto:geoffrey.letessier@cnrs.fr" class="">geoffrey.letessier@cnrs.fr</a>&gt;




                                                          a écrit :</div>
                                                          <br
                                                          class="Apple-interchange-newline">
                                                          <div class="">
                                                          <meta
                                                          http-equiv="Content-Type"
                                                          content="text/html;
charset=windows-1252" class="">
                                                          <div
                                                          style="word-wrap:
                                                          break-word;
                                                          -webkit-nbsp-mode:
                                                          space;
                                                          -webkit-line-break:
after-white-space;" class="">Hello,
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div class="">Concerning

                                                          the 3.5.3
                                                          version of
                                                          GlusterFS, I
                                                          met this
                                                          morning a
                                                          strange issue
                                                          writing file
                                                          when quota is
                                                          exceeded. </div>
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div class="">One

                                                          person of my
                                                          lab, whose her
                                                          quota is
                                                          exceeded (but
                                                          she didn’t
                                                          know about)
                                                          try to modify
                                                          a file but,
                                                          because of
                                                          exceeded
                                                          quota, she was
                                                          unable to and
                                                          decided to
                                                          exit VI. Now,
                                                          her file is
                                                          empty/blank as
                                                          you can read
                                                          below:</div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                        </div>
                                                      </div>
                                                    </blockquote>
                                                    <tt class="">we
                                                      suspect 'vi' might
                                                      have created tmp
                                                      file before
                                                      writing to a file.
                                                      We are working on
                                                      re-creating this
                                                      problem and will
                                                      update you on the
                                                      same.<br class="">
                                                      <br class="">
                                                      <br class="">
                                                    </tt><tt class=""> </tt>
                                                    <blockquote
                                                      cite="mid:C9DA5829-C3CB-43FD-BF65-A60A6E1F14E6@cnrs.fr"
                                                      type="cite"
                                                      class="">
                                                      <div class="">
                                                        <div class="">
                                                          <blockquote
                                                          type="cite"
                                                          class="">
                                                          <div class="">
                                                          <div
                                                          style="word-wrap:
                                                          break-word;
                                                          -webkit-nbsp-mode:
                                                          space;
                                                          -webkit-line-break:
after-white-space;" class="">
                                                          <div class="">
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">pdsh@lucifer:



                                                          cl-storage3:
                                                          ssh exited
                                                          with exit code
                                                          2</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">cl-storage1:



                                                          ---------T 2
                                                          tarus
                                                          amyloid_team 0
                                                          19 févr. 12:34
/export/brick_home/brick1/amyloid_team/tarus/project/ab1-40-x1_sen304-x2_inh3-x2/remd_charmm22star_scripts/remd_115.sh</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          11px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">cl-storage1:



                                                          -rwxrw-r-- 2
                                                          tarus
                                                          amyloid_team
                                                          0  8 juin 
                                                          12:38
/export/brick_home/brick2/amyloid_team/tarus/project/ab1-40-x1_sen304-x2_inh3-x2/remd_charmm22star_scripts/remd_115.sh</div>
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div class="">In

                                                          addition, i
                                                          dont
                                                          understand
                                                          why, my volume
                                                          being a
                                                          distributed
                                                          volume inside
                                                          replica
                                                          (cl-storage[1,3]
                                                          is replicated
                                                          only on
                                                          cl-storage[2,4]),
                                                          i have 2
                                                          « same » files
                                                          (complete
                                                          path) in 2
                                                          different
                                                          bricks (as you
                                                          can read
                                                          above).</div>
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div class="">Thanks

                                                          by advance for
                                                          your help and
                                                          clarification.</div>
                                                          <div class="">Geoffrey</div>
                                                          <div
                                                          apple-content-edited="true"
                                                          class="">
                                                          <div
                                                          style="letter-spacing:
                                                          normal;
                                                          orphans: auto;
                                                          text-align:
                                                          start;
                                                          text-indent:
                                                          0px;
                                                          text-transform:
                                                          none;
                                                          white-space:
                                                          normal;
                                                          widows: auto;
                                                          word-spacing:
                                                          0px;
                                                          -webkit-text-stroke-width:
                                                          0px;
                                                          word-wrap:
                                                          break-word;
                                                          -webkit-nbsp-mode:
                                                          space;
                                                          -webkit-line-break:
after-white-space;" class="">------------------------------------------------------<br
                                                          class="">
                                                          Geoffrey
                                                          Letessier<br
                                                          class="">
                                                          Responsable
                                                          informatique &amp;
                                                          ingénieur
                                                          système<br
                                                          class="">
                                                          UPR 9080 -
                                                          CNRS -
                                                          Laboratoire de
Biochimie Théorique<br class="">
                                                          Institut de
                                                          Biologie
                                                          Physico-Chimique<br
                                                          class="">
                                                          13, rue Pierre
                                                          et Marie Curie
                                                          - 75005 Paris<br
                                                          class="">
                                                          Tel: 01 58 41
                                                          50 93 -
                                                          eMail: <a
                                                          moz-do-not-send="true"
href="mailto:geoffrey.letessier@ibpc.fr" class="">geoffrey.letessier@ibpc.fr</a></div>
                                                          </div>
                                                          <br class="">
                                                          <div class="">
                                                          <blockquote
                                                          type="cite"
                                                          class="">
                                                          <div class="">Le

                                                          2 juin 2015 à
                                                          23:45,
                                                          Geoffrey
                                                          Letessier &lt;<a
moz-do-not-send="true" href="mailto:geoffrey.letessier@cnrs.fr" class="">geoffrey.letessier@cnrs.fr</a>&gt;




                                                          a écrit :</div>
                                                          <br
                                                          class="Apple-interchange-newline">
                                                          <div class="">
                                                          <meta
                                                          http-equiv="Content-Type"
                                                          content="text/html;
charset=windows-1252" class="">
                                                          <div
                                                          style="word-wrap:
                                                          break-word;
                                                          -webkit-nbsp-mode:
                                                          space;
                                                          -webkit-line-break:
after-white-space;" class="">Hi Ben,
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div class="">I
                                                          just check my
                                                          messages log
                                                          files, both on
                                                          client and
                                                          server, and I
                                                          dont find any
                                                          hung task you
                                                          notice on
                                                          yours.. </div>
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div class="">As

                                                          you can read
                                                          below, i dont
                                                          note the
                                                          performance
                                                          issue in a
                                                          simple DD but
                                                          I think my
                                                          issue is
                                                          concerning a
                                                          set of small
                                                          files (tens of
                                                          thousands nay
                                                          more)…</div>
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div class="">
                                                          <div class="">
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">[root@nisus




                                                          test]# ddt -t
                                                          10g /mnt/test/</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">Writing



                                                          to
                                                          /mnt/test/ddt.8362
                                                          ... syncing
                                                          ... done.</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">sleeping



                                                          10 seconds ...
                                                          done.</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">Reading



                                                          from
                                                          /mnt/test/ddt.8362
                                                          ... done.</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">10240MiB 




                                                            KiB/s  CPU%</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">Write 



                                                              114770  
                                                            4</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">Read 
                                                                40675  
                                                            4</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class=""><br
                                                          class="">
                                                          </div>
                                                          </div>
                                                          <div class="">for


                                                          info:
                                                          /mnt/test
                                                          concerns the
                                                          single v2 GlFS
                                                          volume</div>
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div
                                                          apple-content-edited="true"
                                                          class="">
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">[root@nisus




                                                          test]# ddt -t
                                                          10g
                                                          /mnt/fhgfs/</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">Writing



                                                          to
                                                          /mnt/fhgfs/ddt.8380
                                                          ... syncing
                                                          ... done.</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">sleeping



                                                          10 seconds ...
                                                          done.</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">Reading



                                                          from
                                                          /mnt/fhgfs/ddt.8380
                                                          ... done.</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">10240MiB 




                                                            KiB/s  CPU%</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">Write 



                                                              102591  
                                                            1</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">Read 
                                                                98079  
                                                            2</div>
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div class="">Do

                                                          you have a
                                                          idea how to
                                                          tune/optimize
                                                          performance
                                                          settings?
                                                          and/or TCP
                                                          settings (MTU,
                                                          etc.)?</div>
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div class="">
                                                          <div class="">
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">---------------------------------------------------------------</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">|    
                                                                  | 
                                                          UNTAR  |   DU
                                                            |  FIND   |
                                                            TAR   |   RM
                                                            |</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">---------------------------------------------------------------</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">|
                                                          single      | 
                                                          ~3m45s |  
                                                          ~43s | 
                                                            ~47s | 
                                                          ~3m10s |
                                                          ~3m15s |</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">---------------------------------------------------------------</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">|
                                                          replicated  | 
                                                          ~5m10s |  
                                                          ~59s | 
                                                           ~1m6s | 
                                                          ~1m19s |
                                                          ~1m49s |</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">---------------------------------------------------------------</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">|
                                                          distributed | 
                                                          ~4m18s |  
                                                          ~41s | 
                                                            ~57s | 
                                                          ~2m24s |
                                                          ~1m38s |</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">---------------------------------------------------------------</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">|
                                                          dist-repl   | 
                                                          ~8m18s | 
                                                          ~1m4s
                                                          |  ~1m11s | 
                                                          ~1m24s |
                                                          ~2m40s |</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">---------------------------------------------------------------</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">|
                                                          native FS   | 
                                                            ~11s |   
                                                          ~4s |  
                                                            ~2s |   
                                                          ~56s |   ~10s
                                                          |</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">---------------------------------------------------------------</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">|
                                                          BeeGFS      |
                                                           ~3m43s |  
                                                          ~15s |  
                                                            ~3s |
                                                           ~1m33s |  
                                                          ~46s |</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">---------------------------------------------------------------</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">|
                                                          single (v2) |
                                                            ~3m6s |  
                                                          ~14s |  
                                                           ~32s |  
                                                          ~1m2s |   ~44s
                                                          |</div>
                                                          <div
                                                          style="margin:
                                                          0px;
                                                          font-size:
                                                          10px;
                                                          font-family:
                                                          Menlo; color:
                                                          rgb(255, 255,
                                                          255);
                                                          background-color:
                                                          rgb(0, 0, 0);"
                                                          class="">---------------------------------------------------------------</div>
                                                          </div>
                                                          <div class="">for


                                                          info: </div>
                                                          <div class=""><span
class="Apple-tab-span" style="white-space: pre;"> </span>-BeeGFS is a
                                                          distributed FS
                                                          (4 bricks, 2
                                                          bricks per
                                                          server and 2
                                                          servers)</div>
                                                          <div class=""><span
class="Apple-tab-span" style="white-space: pre;"> </span>- single (v2):
                                                          simple gluster
                                                          volume with
                                                          default
                                                          settings</div>
                                                          </div>
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div class="">I
                                                          also note I
                                                          obtain the
                                                          same tar/untar
                                                          performance
                                                          issue with
                                                          FhGFS/BeeGFS
                                                          but the rest
                                                          (DU, FIND, RM)
                                                          looks like to
                                                          be OK.</div>
                                                          <div class=""><br
                                                          class="">
                                                          </div>
                                                          <div class="">Thank


                                                          you very much
                                                          for your reply
                                                          and help.</div>
                                                          <div class="">Geoffrey<br
                                                          class="">
                                                          <div
                                                          apple-content-edited="true"
                                                          class="">
                                                          <div
                                                          style="letter-spacing:
                                                          normal;
                                                          orphans: auto;
                                                          text-align:
                                                          start;
                                                          text-indent:
                                                          0px;
                                                          text-transform:
                                                          none;
                                                          white-space:
                                                          normal;
                                                          widows: auto;
                                                          word-spacing:
                                                          0px;
                                                          -webkit-text-stroke-width:
                                                          0px;
                                                          word-wrap:
                                                          break-word;
                                                          -webkit-nbsp-mode:
                                                          space;
                                                          -webkit-line-break:
after-white-space;" class="">-----------------------------------------------<br
                                                          class="">
                                                          Geoffrey
                                                          Letessier<br
                                                          class="">
                                                          <br class="">
                                                          Responsable
                                                          informatique
                                                          &amp;
                                                          ingénieur
                                                          système<br
                                                          class="">
                                                          CNRS - UPR
                                                          9080 -
                                                          Laboratoire
                                                          de Biochimie
                                                          Théorique<br
                                                          class="">
                                                          Institut de
                                                          Biologie
                                                          Physico-Chimique<br
                                                          class="">
                                                          13, rue Pierre
                                                          et Marie Curie
                                                          - 75005 Paris<br
                                                          class="">
                                                          Tel: 01 58 41
                                                          50 93 -
                                                          eMail: <a
                                                          moz-do-not-send="true"
href="mailto:geoffrey.letessier@cnrs.fr" class="">geoffrey.letessier@cnrs.fr</a></div>
                                                          </div>
                                                          <br class="">
                                                          <div class="">
                                                          <div class="">Le


                                                          2 juin 2015 à
                                                          21:53, Ben
                                                          Turner &lt;<a
moz-do-not-send="true" href="mailto:bturner@redhat.com" class="">bturner@redhat.com</a>&gt;


                                                          a écrit :</div>
                                                          <br
                                                          class="Apple-interchange-newline">
                                                          <blockquote
                                                          type="cite"
                                                          class="">
                                                          <div
                                                          style="font-size:
                                                          12px;
                                                          font-style:
                                                          normal;
                                                          font-variant:
                                                          normal;
                                                          font-weight:
                                                          normal;
                                                          letter-spacing:
                                                          normal;
                                                          line-height:
                                                          normal;
                                                          orphans: auto;
                                                          text-align:
                                                          start;
                                                          text-indent:
                                                          0px;
                                                          text-transform:
                                                          none;
                                                          white-space:
                                                          normal;
                                                          widows: auto;
                                                          word-spacing:
                                                          0px;
                                                          -webkit-text-stroke-width:
                                                          0px;" class="">I
                                                          am seeing
                                                          problems on
                                                          3.7 as well.
                                                           Can you check
                                                          /var/log/messages



                                                          on both the
                                                          clients and
                                                          servers for
                                                          hung tasks
                                                          like:<br
                                                          class="">
                                                          <br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel: "echo
                                                          0 &gt;
                                                          /proc/sys/kernel/hung_task_timeout_secs"
                                                          disables this
                                                          message.<br
                                                          class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel: iozone
                                                                 D
                                                          0000000000000001
                                                              0 21999
                                                               1
                                                          0x00000080<br
                                                          class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          ffff880611321cc8
0000000000000082
ffff880611321c18
ffffffffa027236e<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          ffff880611321c48
ffffffffa0272c10
ffff88052bd1e040
ffff880611321c78<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          ffff88052bd1e0f0
ffff88062080c7a0
ffff880625addaf8
ffff880611321fd8<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel: Call
                                                          Trace:<br
                                                          class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffffa027236e&gt;]
                                                          ?
                                                          rpc_make_runnable+0x7e/0x80
                                                          [sunrpc]<br
                                                          class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffffa0272c10&gt;]
                                                          ?
                                                          rpc_execute+0x50/0xa0
                                                          [sunrpc]<br
                                                          class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff810aaa21&gt;]
                                                          ?
                                                          ktime_get_ts+0xb1/0xf0<br
                                                          class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff811242d0&gt;]
                                                          ?
                                                          sync_page+0x0/0x50<br
                                                          class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff8152a1b3&gt;]
io_schedule+0x73/0xc0<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff8112430d&gt;]
sync_page+0x3d/0x50<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff8152ac7f&gt;]
__wait_on_bit+0x5f/0x90<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff81124543&gt;]
wait_on_page_bit+0x73/0x80<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff8109eb80&gt;]
                                                          ?
                                                          wake_bit_function+0x0/0x50<br
                                                          class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff8113a525&gt;]
                                                          ?
                                                          pagevec_lookup_tag+0x25/0x40<br
                                                          class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff8112496b&gt;]
wait_on_page_writeback_range+0xfb/0x190<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff81124b38&gt;]
filemap_write_and_wait_range+0x78/0x90<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff811c07ce&gt;]
vfs_fsync_range+0x7e/0x100<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff811c08bd&gt;]
vfs_fsync+0x1d/0x20<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff811c08fe&gt;]
do_fsync+0x3e/0x60<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff811c0950&gt;]
sys_fsync+0x10/0x20<br class="">
                                                          Jun  2
                                                          15:23:14
                                                          gqac006
                                                          kernel:
                                                          [&lt;ffffffff8100b072&gt;]
system_call_fastpath+0x16/0x1b<br class="">
                                                          <br class="">
                                                          Do you see a
                                                          perf problem
                                                          with just a
                                                          simple DD or
                                                          do you need a
                                                          more complex
                                                          workload to
                                                          hit the issue?
                                                           I think I saw
                                                          an issue with
                                                          metadata
                                                          performance
                                                          that I am
                                                          trying to run
                                                          down, let me
                                                          know if you
                                                          can see the
                                                          problem with
                                                          simple DD
                                                          reads / writes
                                                          or if we need
                                                          to do some
                                                          sort of dir /
                                                          metadata
                                                          access as
                                                          well.<br
                                                          class="">
                                                          <br class="">
                                                          -b<br class="">
                                                          <br class="">
                                                          ----- Original
                                                          Message -----<br
                                                          class="">
                                                          <blockquote
                                                          type="cite"
                                                          class="">From:
                                                          "Geoffrey
                                                          Letessier"
                                                          &lt;<a
                                                          moz-do-not-send="true"
href="mailto:geoffrey.letessier@cnrs.fr" class="">geoffrey.letessier@cnrs.fr</a>&gt;<br
                                                          class="">
                                                          To: "Pranith
                                                          Kumar
                                                          Karampuri"
                                                          &lt;<a
                                                          moz-do-not-send="true"
href="mailto:pkarampu@redhat.com" class="">pkarampu@redhat.com</a>&gt;<br
                                                          class="">
                                                          Cc:<span
                                                          class="Apple-converted-space"> </span><a
moz-do-not-send="true" href="mailto:gluster-users@gluster.org" class="">gluster-users@gluster.org</a><br
                                                          class="">
                                                          Sent: Tuesday,
                                                          June 2, 2015
                                                          8:09:04 AM<br
                                                          class="">
                                                          Subject: Re:
                                                          [Gluster-users]
                                                          GlusterFS 3.7
                                                          - slow/poor
                                                          performances<br
                                                          class="">
                                                          <br class="">
                                                          Hi Pranith,<br
                                                          class="">
                                                          <br class="">
                                                          I’m sorry but
                                                          I cannot bring
                                                          you any
                                                          comparison
                                                          because
                                                          comparison
                                                          will be<br
                                                          class="">
                                                          distorted by
                                                          the fact in my
                                                          HPC cluster in
                                                          production the
                                                          network
                                                          technology<br
                                                          class="">
                                                          is InfiniBand
                                                          QDR and my
                                                          volumes are
                                                          quite
                                                          different
                                                          (brick in
                                                          RAID6<br
                                                          class="">
                                                          (12x2TB), 2
                                                          bricks per
                                                          server and 4
                                                          servers into
                                                          my pool)<br
                                                          class="">
                                                          <br class="">
                                                          Concerning
                                                          your demand,
                                                          in attachments
                                                          you can find
                                                          all expected
                                                          results<br
                                                          class="">
                                                          hoping it can
                                                          help you to
                                                          solve this
                                                          serious
                                                          performance
                                                          issue (maybe I
                                                          need<br
                                                          class="">
                                                          play with
                                                          glusterfs
                                                          parameters?).<br
                                                          class="">
                                                          <br class="">
                                                          Thank you very
                                                          much by
                                                          advance,<br
                                                          class="">
                                                          Geoffrey<br
                                                          class="">
------------------------------------------------------<br class="">
                                                          Geoffrey
                                                          Letessier<br
                                                          class="">
                                                          Responsable
                                                          informatique
                                                          &amp;
                                                          ingénieur
                                                          système<br
                                                          class="">
                                                          UPR 9080 -
                                                          CNRS -
                                                          Laboratoire de
                                                          Biochimie
                                                          Théorique<br
                                                          class="">
                                                          Institut de
                                                          Biologie
                                                          Physico-Chimique<br
                                                          class="">
                                                          13, rue Pierre
                                                          et Marie Curie
                                                          - 75005 Paris<br
                                                          class="">
                                                          Tel: 01 58 41
                                                          50 93 - eMail:
                                                          <a
                                                          moz-do-not-send="true"
href="mailto:geoffrey.letessier@ibpc.fr" class="">geoffrey.letessier@ibpc.fr</a><br
                                                          class="">
                                                          <br class="">
                                                          <br class="">
                                                          <br class="">
                                                          <br class="">
                                                          Le 2 juin 2015
                                                          à 10:09,
                                                          Pranith Kumar
                                                          Karampuri &lt;
                                                          <a
                                                          moz-do-not-send="true"
href="mailto:pkarampu@redhat.com" class="">pkarampu@redhat.com</a> &gt;
                                                          a<br class="">
                                                          écrit :<br
                                                          class="">
                                                          <br class="">
                                                          hi Geoffrey,<br
                                                          class="">
                                                          Since you are
                                                          saying it
                                                          happens on all
                                                          types of
                                                          volumes, lets
                                                          do the<br
                                                          class="">
                                                          following:<br
                                                          class="">
                                                          1) Create a
                                                          dist-repl
                                                          volume<br
                                                          class="">
                                                          2) Set the
                                                          options etc
                                                          you need.<br
                                                          class="">
                                                          3) enable
                                                          gluster volume
                                                          profile using
                                                          "gluster
                                                          volume profile
&lt;volname&gt;<br class="">
                                                          start"<br
                                                          class="">
                                                          4) run the
                                                          work load<br
                                                          class="">
                                                          5) give output
                                                          of "gluster
                                                          volume profile
                                                          &lt;volname&gt;



                                                          info"<br
                                                          class="">
                                                          <br class="">
                                                          Repeat the
                                                          steps above on
                                                          new and old
                                                          version you
                                                          are comparing
                                                          this with.<br
                                                          class="">
                                                          That should
                                                          give us
                                                          insight into
                                                          what could be
                                                          causing the
                                                          slowness.<br
                                                          class="">
                                                          <br class="">
                                                          Pranith<br
                                                          class="">
                                                          On 06/02/2015
                                                          03:22 AM,
                                                          Geoffrey
                                                          Letessier
                                                          wrote:<br
                                                          class="">
                                                          <br class="">
                                                          <br class="">
                                                          Dear all,<br
                                                          class="">
                                                          <br class="">
                                                          I have a crash
                                                          test cluster
                                                          where i’ve
                                                          tested the new
                                                          version of
                                                          GlusterFS<br
                                                          class="">
                                                          (v3.7) before
                                                          upgrading my
                                                          HPC cluster in
                                                          production.<br
                                                          class="">
                                                          But… all my
                                                          tests show me
                                                          very very low
                                                          performances.<br
                                                          class="">
                                                          <br class="">
                                                          For my
                                                          benches, as
                                                          you can read
                                                          below, I do
                                                          some actions
                                                          (untar, du,
                                                          find,<br
                                                          class="">
                                                          tar, rm) with
                                                          linux kernel
                                                          sources,
                                                          dropping
                                                          cache, each on
                                                          distributed,<br
                                                          class="">
                                                          replicated,
                                                          distributed-replicated,
                                                          single (single
                                                          brick) volumes
                                                          and the<br
                                                          class="">
                                                          native FS of
                                                          one brick.<br
                                                          class="">
                                                          <br class="">
                                                          # time (echo 3
                                                          &gt;
                                                          /proc/sys/vm/drop_caches;
                                                          tar xJf
                                                          ~/linux-4.1-rc5.tar.xz;<br
                                                          class="">
                                                          sync; echo 3
                                                          &gt;
                                                          /proc/sys/vm/drop_caches)<br
                                                          class="">
                                                          # time (echo 3
                                                          &gt;
                                                          /proc/sys/vm/drop_caches;
                                                          du -sh
                                                          linux-4.1-rc5/;
                                                          echo 3 &gt;<br
                                                          class="">
/proc/sys/vm/drop_caches)<br class="">
                                                          # time (echo 3
                                                          &gt;
                                                          /proc/sys/vm/drop_caches;
                                                          find
                                                          linux-4.1-rc5/|wc
                                                          -l; echo 3<br
                                                          class="">
                                                          <blockquote
                                                          type="cite"
                                                          class="">/proc/sys/vm/drop_caches)<br
                                                          class="">
                                                          </blockquote>
                                                          # time (echo 3
                                                          &gt;
                                                          /proc/sys/vm/drop_caches;
                                                          tar czf
                                                          linux-4.1-rc5.tgz<br
                                                          class="">
                                                          linux-4.1-rc5/;



                                                          echo 3 &gt;
                                                          /proc/sys/vm/drop_caches)<br
                                                          class="">
                                                          # time (echo 3
                                                          &gt;
                                                          /proc/sys/vm/drop_caches;
                                                          rm -rf
                                                          linux-4.1-rc5.tgz<br
                                                          class="">
                                                          linux-4.1-rc5/;



                                                          echo 3 &gt;
                                                          /proc/sys/vm/drop_caches)<br
                                                          class="">
                                                          <br class="">
                                                          And here are
                                                          the process
                                                          times:<br
                                                          class="">
                                                          <br class="">
---------------------------------------------------------------<br
                                                          class="">
                                                          | | UNTAR | DU
                                                          | FIND | TAR |
                                                          RM |<br
                                                          class="">
---------------------------------------------------------------<br
                                                          class="">
                                                          | single |
                                                          ~3m45s | ~43s
                                                          | ~47s |
                                                          ~3m10s |
                                                          ~3m15s |<br
                                                          class="">
---------------------------------------------------------------<br
                                                          class="">
                                                          | replicated |
                                                          ~5m10s | ~59s
                                                          | ~1m6s |
                                                          ~1m19s |
                                                          ~1m49s |<br
                                                          class="">
---------------------------------------------------------------<br
                                                          class="">
                                                          | distributed
                                                          | ~4m18s |
                                                          ~41s | ~57s |
                                                          ~2m24s |
                                                          ~1m38s |<br
                                                          class="">
---------------------------------------------------------------<br
                                                          class="">
                                                          | dist-repl |
                                                          ~8m18s | ~1m4s
                                                          | ~1m11s |
                                                          ~1m24s |
                                                          ~2m40s |<br
                                                          class="">
---------------------------------------------------------------<br
                                                          class="">
                                                          | native FS |
                                                          ~11s | ~4s |
                                                          ~2s | ~56s |
                                                          ~10s |<br
                                                          class="">
---------------------------------------------------------------<br
                                                          class="">
                                                          <br class="">
                                                          I get the same
                                                          results,
                                                          whether with
                                                          default
                                                          configurations
                                                          with custom<br
                                                          class="">
configurations.<br class="">
                                                          <br class="">
                                                          if I look at
                                                          the side of
                                                          the ifstat
                                                          command, I can
                                                          note my IO
                                                          write
                                                          processes<br
                                                          class="">
                                                          never exceed
                                                          3MBs...<br
                                                          class="">
                                                          <br class="">
                                                          EXT4 native FS
                                                          seems to be
                                                          faster
                                                          (roughly
                                                          15-20% but no
                                                          more) than XFS
                                                          one<br
                                                          class="">
                                                          <br class="">
                                                          My [test]
                                                          storage
                                                          cluster config
                                                          is composed by
                                                          2 identical
                                                          servers (biCPU<br
                                                          class="">
                                                          Intel Xeon
                                                          X5355, 8GB of
                                                          RAM, 2x2TB HDD
                                                          (no-RAID) and
                                                          Gb ethernet)<br
                                                          class="">
                                                          <br class="">
                                                          My volume
                                                          settings:<br
                                                          class="">
                                                          single:
                                                          1server 1
                                                          brick<br
                                                          class="">
                                                          replicated: 2
                                                          servers 1
                                                          brick each<br
                                                          class="">
                                                          distributed: 2
                                                          servers 2
                                                          bricks each<br
                                                          class="">
                                                          dist-repl: 2
                                                          bricks in the
                                                          same server
                                                          and replica 2<br
                                                          class="">
                                                          <br class="">
                                                          All seems to
                                                          be OK in
                                                          gluster status
                                                          command line.<br
                                                          class="">
                                                          <br class="">
                                                          Do you have an
                                                          idea why I
                                                          obtain so bad
                                                          results?<br
                                                          class="">
                                                          Thanks in
                                                          advance.<br
                                                          class="">
                                                          Geoffrey<br
                                                          class="">
-----------------------------------------------<br class="">
                                                          Geoffrey
                                                          Letessier<br
                                                          class="">
                                                          <br class="">
                                                          Responsable
                                                          informatique
                                                          &amp;
                                                          ingénieur
                                                          système<br
                                                          class="">
                                                          CNRS - UPR
                                                          9080 -
                                                          Laboratoire de
                                                          Biochimie
                                                          Théorique<br
                                                          class="">
                                                          Institut de
                                                          Biologie
                                                          Physico-Chimique<br
                                                          class="">
                                                          13, rue Pierre
                                                          et Marie Curie
                                                          - 75005 Paris<br
                                                          class="">
                                                          Tel: 01 58 41
                                                          50 93 - eMail:
                                                          <a
                                                          moz-do-not-send="true"
href="mailto:geoffrey.letessier@cnrs.fr" class="">geoffrey.letessier@cnrs.fr</a><br
                                                          class="">
                                                          <br class="">
                                                          <br class="">
                                                          <br class="">
_______________________________________________<br class="">
                                                          Gluster-users
                                                          mailing list <a
moz-do-not-send="true" href="mailto:Gluster-users@gluster.org" class="">Gluster-users@gluster.org</a><br
                                                          class="">
                                                          <a
                                                          moz-do-not-send="true"
href="http://www.gluster.org/mailman/listinfo/gluster-users" class="">http://www.gluster.org/mailman/listinfo/gluster-users</a><br
                                                          class="">
                                                          <br class="">
                                                          <br class="">
                                                          <br class="">
                                                          <br class="">
_______________________________________________<br class="">
                                                          Gluster-users
                                                          mailing list<br
                                                          class="">
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href="mailto:Gluster-users@gluster.org" class="">Gluster-users@gluster.org</a><br
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                                                          moz-do-not-send="true"
href="http://www.gluster.org/mailman/listinfo/gluster-users" class="">http://www.gluster.org/mailman/listinfo/gluster-users</a></blockquote>
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                                                      <pre class="" wrap="">_______________________________________________
Gluster-users mailing list
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.gluster.org/mailman/listinfo/gluster-users">http://www.gluster.org/mailman/listinfo/gluster-users</a></pre>
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