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I once had that happen. Turned out to be bad ram.<br>
<br>
<div class="moz-cite-prefix">On 01/26/2016 09:12 PM, Krutika
Dhananjay wrote:<br>
</div>
<blockquote
cite="mid:1135917242.8475321.1453871528844.JavaMail.zimbra@redhat.com"
type="cite">
<div style="font-family: garamond,new york,times,serif; font-size:
12pt; color: #000000">
<div>Hi,</div>
<div><br>
</div>
<div>Could you share the following pieces of information:<br>
</div>
<div><br>
</div>
<div>1) output of `gluster volume info <VOL>`<br>
</div>
<div>2) the client/mount logs<br>
</div>
<div>3) glustershd logs<br>
</div>
<div><br>
</div>
<div>-Krutika<br>
</div>
<div><br>
</div>
<hr id="zwchr">
<blockquote style="border-left:2px solid
#1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From:
</b>"Klearchos Chaloulos (Nokia - GR/Athens)"
<a class="moz-txt-link-rfc2396E" href="mailto:klearchos.chaloulos@nokia.com"><klearchos.chaloulos@nokia.com></a><br>
<b>To: </b><a class="moz-txt-link-abbreviated" href="mailto:gluster-users@gluster.org">gluster-users@gluster.org</a><br>
<b>Sent: </b>Tuesday, January 26, 2016 9:57:38 PM<br>
<b>Subject: </b>[Gluster-users] Different file in two
bricks, no split-brain detected<br>
<div><br>
</div>
<style><!-- .EmailQuote { margin-left: 1pt; padding-left: 4pt; border-left: #800000 2px solid; } --></style>
<span style="font-family: Calibri; font-size: small;"
data-mce-style="font-family: Calibri; font-size: small;"
face="Calibri" size="2"><span style="font-size:11pt;">
<div>Description of problem:</div>
<div>My setup has 5 gluster volumes, and each of them has
2 bricks as backend. </div>
<div>When I copy a large file (100MB) in a gluster volume,
9/10 times it works OK. But about 1 in 10 times the
resulting md5 is wrong. After checking I found that the
file in one brick has the correct md5sum, while the file
in the other brick has a wrong md5sum.
The size of the two files is the same.</div>
<div>By running "cmp -l <correct_file>
<wrong_file>"</div>
<div>I found that the difference was in 49 bytes. So the
files in the two bricks had the same size, but 49 files
were different. Interestingly enough I saw the same
number of 49 bytes being different at every check that I
made.</div>
<div> </div>
<div>Do you know what might cause this behavior, has
anyone seen something like this before? Is this a bug in
glusterfs? </div>
<div> </div>
<div> </div>
<div>Version-Release number of selected component (if
applicable):</div>
<div>glusterfs 3.7.5 built on Nov 19 2015 16:29:59</div>
<div>Repository revision:
git://git.gluster.com/glusterfs.git</div>
<div>Copyright (c) 2006-2011 Gluster Inc. <<a
moz-do-not-send="true" href="http://www.gluster.com"
target="_blank"><a class="moz-txt-link-freetext" href="http://www.gluster.com">http://www.gluster.com</a></a>></div>
<div>GlusterFS comes with ABSOLUTELY NO WARRANTY.</div>
<div>You may redistribute copies of GlusterFS under the
terms of the GNU General Public License.</div>
<div> </div>
<div> </div>
<div>How reproducible:</div>
<div>Not easy to reproduce, about 1 in 10 times in some
environments, not reproducible at all in other
environments.</div>
<div> </div>
<div>Steps to Reproduce:</div>
<div>1. scp <100MB file> <path in gluster
volume></div>
<div> </div>
<div>Actual results:</div>
<div>1. md5sum of destination should be the same as the
source</div>
<div>2. If checksum of files is different between the two
bricks, the command "gluster volume heal
<vol-name> info split-brain" should return that
the two bricks are in split-brain.</div>
<div> </div>
<div> </div>
<div>Expected results:</div>
<div>1. 1 in 10 times the destination file has incorrect
checksum. Size is the same, but 49 bytes are altered.</div>
<div>2. "gluster volume heal <vol-name> info
split-brain" does not return that the bricks are in
split-brain, even though the checksum of the file in the
two bricks is different. The size of the file is the
same in the two bricks. But 49 bytes are altered.</div>
<div> </div>
<div>Additional info:</div>
<div> </div>
</span></span>
<br>
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<div><br>
</div>
</div>
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