<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2">Pranith, by parent directory, do you mean the directory that contains
the file or the top level directory of the brick?</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2">My gluster volume info:</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2"><a href="http://pastie.org/2493045">http://pastie.org/2493045</a></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2">The hostnames used in the gluster volume info are DNS hostnames that
resolve to 10GB interfaces on the Gluster nodes.<span style="mso-spacerun:yes"> </span></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2">The hostname used in the mount options is a RR DNS hostname that
resolves to all eight Gluster nodes.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2">Stat/md5sum/getfattr data of the identical files with different md5sums.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2"><a href="http://pastie.org/2497461">http://pastie.org/2497461</a></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
"Times New Roman";mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:
dark2">Thank you</span></p>
<br><br><div class="gmail_quote">On Wed, Sep 7, 2011 at 4:43 AM, Pranith Kumar K <span dir="ltr"><<a href="mailto:pranithk@gluster.com">pranithk@gluster.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<u></u>
<div bgcolor="#ffffff" text="#000000">
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.<div><div></div><div class="h5"><br>
<br>
On 09/07/2011 04:22 AM, Anthony Delviscio wrote:
</div></div><blockquote type="cite"><div><div></div><div class="h5">
<div>
<div>
<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>
</div></div><pre><fieldset></fieldset>
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</pre>
</blockquote>
<br>
</div>
</blockquote></div><br>