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hi Anthony,<br>
Could you send the output of the getfattr -d -m . -e hex
<filepath> on both the bricks and also the stat output on the
both the backends. Give the outputs for its parent directory also.<br>
<br>
Pranith.<br>
<br>
On 09/07/2011 04:22 AM, Anthony Delviscio wrote:
<blockquote
cite="mid:CAKE0inQy3Tjf3TB11kc+F_F-P7kN2CJ+eG+2FaRUxOe4tnzgwQ@mail.gmail.com"
type="cite">
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<div id=":7t" class="ii gt">
<div id=":7u">
<p class="MsoNormal">I was wondering if anyone would be able
to shed some light
on how a file could end up with inconsistent md5sums on
Gluster backend
storage.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Our configuration is running on Gluster
v3.1.5 in a distribute-replicate
setup consisting of 8 bricks.</p>
<p class="MsoNormal">Our OS is Red Hat 5.6 x86_64.<span> </span>Backend
storage is an ext3 RAID 5.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">The 8 bricks are in RR DNS and are
mounted for reading/writing
via NFS automounts.<span> </span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">When comparing md5sums of the file from
two different NFS
clients, they were different.<span> </span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">The extended attributes of the files on
backend storage are
identical.<span> </span>The file size and permissions
are identical.<span> </span>The stat data (excluding
inode on backend storage file system) is identical.</p>
<p class="MsoNormal">However, running md5sum on the two files,
results in two
different md5sums.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Copying both files to another
location/server and running
the md5sum also results in no change – they’re still
different.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Gluster logs do not show anything related
to the filename in
question.<span> </span>Triggering a self-healing
operation didn’t seem to do anything and it may have to do
with the fact that
the extended attributes are identical.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">If more information is required, let me
know and I will try
to accommodate.<span> </span></p>
<p class="MsoNormal">Thank you</p>
</div>
</div>
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</blockquote>
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