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http-equiv="Content-Type">
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<div class="moz-cite-prefix">On Tuesday 09 June 2015 01:08 PM,
Geoffrey Letessier wrote:<br>
</div>
<blockquote cite="mid:A2852C15-BF63-421F-A730-EA03D983CFBE@cnrs.fr"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
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><br>
Hi </tt><tt>Geoffrey,</tt><tt><br>
</tt><tt><br>
</tt><tt>I tried re-creating the problem.<br>
<br>
Here is the behaviour of vi editor.</tt><tt><br>
</tt><tt>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><br>
</tt><tt><br>
<br>
Here is the strace of vi editor when it gets 'EDQUOT' error:</tt><tt><br>
</tt><tt><br>
</tt><tt>open("hello", O_WRONLY|O_CREAT|O_TRUNC, 0644) = 3</tt><tt><br>
</tt><tt>write(3, "line one\nline two\n", 18) = 18</tt><tt><br>
</tt><tt>fsync(3) = 0</tt><tt><br>
</tt><tt>close(3) = -1 EDQUOT (Disk
quota exceeded)</tt><tt><br>
</tt><tt>chmod("hello", 0100644) = 0</tt><tt><br>
</tt><tt>open("/root/hello~", O_RDONLY) = 3</tt><tt><br>
</tt><b><tt>open("hello", O_WRONLY|O_CREAT|O_TRUNC, 0644) = 7</tt></b><tt><br>
</tt><tt>read(3, "line one\n", 256) = 9</tt><tt><br>
</tt><tt>write(7, "line one\n", 9) = 9</tt><tt><br>
</tt><tt>read(3, "", 256) = 0</tt><tt><br>
</tt><tt>close(7) = -1 EDQUOT (Disk
quota exceeded)</tt><tt><br>
</tt><tt>close(3) = 0</tt><tt><br>
</tt><tt><br>
</tt><tt><br>
</tt><tt>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> If exists you can copy this file.<br>
</tt><tt><br>
</tt><tt>Thanks,</tt><tt><br>
</tt><tt>Vijay</tt><br>
<br>
<br>
<blockquote cite="mid:A2852C15-BF63-421F-A730-EA03D983CFBE@cnrs.fr"
type="cite">
<div class="">
<div class="">Geoffrey</div>
<div class="">------------------------------------------------------</div>
<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="">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 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="">
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list <a
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class="">
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class="">
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<br class="">
<br class="">
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