<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Hello Vijay,<div><br></div><div>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><br></div><div>Nice night (in France)</div><div>Geoffrey<br><div apple-content-edited="true">
------------------------------------------------------<br>Geoffrey Letessier<br>Responsable informatique & ingénieur système<br>UPR 9080 - CNRS - Laboratoire de Biochimie Théorique<br>Institut de Biologie Physico-Chimique<br>13, rue Pierre et Marie Curie - 75005 Paris<br>Tel: 01 58 41 50 93 - eMail: <a href="mailto:geoffrey.letessier@ibpc.fr">geoffrey.letessier@ibpc.fr</a>
</div>
<br><div><div>Le 9 juin 2015 à 12:46, Vijaikumar M <<a href="mailto:vmallika@redhat.com">vmallika@redhat.com</a>> a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite">
<meta content="text/html; charset=windows-1252" http-equiv="Content-Type">
<div bgcolor="#FFFFFF" text="#000000">
<tt>Hi Geoffrey,</tt><tt><br>
</tt><tt><br>
</tt><tt>The file content deletion is because of 'vi editor'
behaviour of truncating the file when writing the updated content.</tt><tt><br>
</tt><tt><br>
</tt><tt>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><br>
</tt>
<meta http-equiv="content-type" content="text/html;
charset=windows-1252">
<tt>The script basically crawls the directory given as argument.</tt><tt><br>
</tt><tt>It collects quota "contri" and "size" extended attribute
and also "block size" from stat call.</tt><tt><br>
</tt><tt><br>
</tt><tt>Usage:</tt><tt><br>
</tt><tt><br>
</tt><tt>./quota-verify -b <brick_path> | tee brick_name.log</tt><tt><br>
</tt><tt><br>
</tt><tt><br>
</tt><tt>Thanks,</tt><tt><br>
</tt><tt>Vijay</tt><tt><br>
</tt><tt><br>
</tt><br>
<br>
<div class="moz-cite-prefix">On Tuesday 09 June 2015 03:45 PM,
Vijaikumar M wrote:<br>
</div>
<blockquote cite="mid:5576BCBB.7020502@redhat.com" type="cite">
<meta content="text/html; charset=windows-1252" http-equiv="Content-Type">
<br>
<br>
<div class="moz-cite-prefix">On Tuesday 09 June 2015 03:40 PM,
Geoffrey Letessier wrote:<br>
</div>
<blockquote cite="mid:EF13613C-0262-4E26-A146-920746BBB363@cnrs.fr" type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
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><br>
</tt><tt>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>used to edit a file</tt><tt>).</tt><tt><br>
</tt><tt><br>
</tt><tt>Thanks,</tt><tt><br>
</tt><tt>Vijay</tt><br>
<br>
<br>
<blockquote cite="mid:EF13613C-0262-4E26-A146-920746BBB363@cnrs.fr" type="cite">
<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 & 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 9 juin 2015 à 10:05, Vijaikumar M <<a moz-do-not-send="true" href="mailto:vmallika@redhat.com" class="">vmallika@redhat.com</a>>
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> /dev/null"
2>/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 & 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 <<a moz-do-not-send="true" href="mailto:vmallika@redhat.com" class="">vmallika@redhat.com</a>>
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 &
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 <<a moz-do-not-send="true" href="mailto:geoffrey.letessier@cnrs.fr" class="">geoffrey.letessier@cnrs.fr</a>>
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 &
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 <<a moz-do-not-send="true" href="mailto:geoffrey.letessier@cnrs.fr" class="">geoffrey.letessier@cnrs.fr</a>>
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
&
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 <<a moz-do-not-send="true" href="mailto:bturner@redhat.com" class="">bturner@redhat.com</a>>
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 >
/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:
[<ffffffffa027236e>]
?
rpc_make_runnable+0x7e/0x80
[sunrpc]<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffffa0272c10>]
?
rpc_execute+0x50/0xa0
[sunrpc]<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff810aaa21>]
?
ktime_get_ts+0xb1/0xf0<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff811242d0>]
?
sync_page+0x0/0x50<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff8152a1b3>]
io_schedule+0x73/0xc0<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff8112430d>]
sync_page+0x3d/0x50<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff8152ac7f>]
__wait_on_bit+0x5f/0x90<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff81124543>]
wait_on_page_bit+0x73/0x80<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff8109eb80>]
?
wake_bit_function+0x0/0x50<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff8113a525>]
?
pagevec_lookup_tag+0x25/0x40<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff8112496b>]
wait_on_page_writeback_range+0xfb/0x190<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff81124b38>]
filemap_write_and_wait_range+0x78/0x90<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff811c07ce>]
vfs_fsync_range+0x7e/0x100<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff811c08bd>]
vfs_fsync+0x1d/0x20<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff811c08fe>]
do_fsync+0x3e/0x60<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff811c0950>]
sys_fsync+0x10/0x20<br class="">
Jun 2
15:23:14
gqac006
kernel:
[<ffffffff8100b072>]
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"
<<a moz-do-not-send="true" href="mailto:geoffrey.letessier@cnrs.fr" class="">geoffrey.letessier@cnrs.fr</a>><br class="">
To: "Pranith
Kumar
Karampuri"
<<a moz-do-not-send="true" href="mailto:pkarampu@redhat.com" class="">pkarampu@redhat.com</a>><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
&
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 <
<a moz-do-not-send="true" href="mailto:pkarampu@redhat.com" class="">pkarampu@redhat.com</a> >
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
<volname><br class="">
start"<br class="">
4) run the
work load<br class="">
5) give output
of "gluster
volume profile
<volname>
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
>
/proc/sys/vm/drop_caches;
tar xJf
~/linux-4.1-rc5.tar.xz;<br class="">
sync; echo 3
>
/proc/sys/vm/drop_caches)<br class="">
# time (echo 3
>
/proc/sys/vm/drop_caches;
du -sh
linux-4.1-rc5/;
echo 3 ><br class="">
/proc/sys/vm/drop_caches)<br class="">
# time (echo 3
>
/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
>
/proc/sys/vm/drop_caches;
tar czf
linux-4.1-rc5.tgz<br class="">
linux-4.1-rc5/;
echo 3 >
/proc/sys/vm/drop_caches)<br class="">
# time (echo 3
>
/proc/sys/vm/drop_caches;
rm -rf
linux-4.1-rc5.tgz<br class="">
linux-4.1-rc5/;
echo 3 >
/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
&
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="">
<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></blockquote>
</div>
</blockquote>
</div>
<br class="">
</div>
</div>
</div>
</blockquote>
</div>
<br class="">
</div>
</div>
</div>
</blockquote>
</div>
<br class="">
</div>
<br class="">
<fieldset class="mimeAttachmentHeader"></fieldset>
<br class="">
<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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