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Hi All,<br>
We have a RedHat 6.2 cluster with 4 nodes using GFS2 for shared
filesystems. One of the filesystems we need to share is
/var/spool/mail. In general, with recent upgrades and improvements
to GFS2, which has been working really, really well. We're starting
to see some significant fragmentation on files in the filesystem,
though, even after recreating the filesystem after the RHEL 6
upgrade. My understanding was that there were fixes in RHEL 6 that
made defragmentation un-(or less?) necessary, but we're seeing a
disturbing increase in the amount of fragmentation since the
upgrade. By the way, we're seeing numbers in the range of
4,000-6,000 extents/GB for some of these files, which seems a bit
large. <br>
So, I've got two questions:<br>
<blockquote>
<ol>
<li>At what point should we be worried about the number of
extents?</li>
<li>Are there plans for a defragmentation tool?</li>
</ol>
</blockquote>
<br>
Thanks!<br>
<br>
-- scooter<br>
<br>
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