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<DIV><SPAN class=754332015-10052010><FONT size=2 face=Arial>About one month ago
we created a new 30GB filesystem under OCFS2 1.4.4 and shared it between two
nodes. The filesystem was created with "-T mail" and is used as a staging
area for small JPEG photos and this means that upwards of 15,000 files are
created and/or deleted on a daily basis.</FONT></SPAN></DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2 face=Arial>This weekend we hit
the erroneous "our of space" error, even though the filesystem was only 53% full
and so I decided to upgrade to the latest release of OCFS2. Even after the
upgrade, we still couldn't create new files on this filesystem and so I
backed it up, recreated the filesystem and restored the
data.</FONT></SPAN></DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2 face=Arial>As a result of how
we use this filesystem, it occurred to me that fragmentation was very likely to
recur in the near future :-(</FONT></SPAN></DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2 face=Arial>Reading the release
notes for OCFS2 1.4.7, it states that the fix allows a node to steal
free blocks from another node's extent allocator. What I have done is to
allocate 16 node slots, even though there will never be more than three nodes
accessing this filesystem. My intention is to give OCFS2 plenty of nodes
from which to steal these free bocks - it this a reasonable precaution given our
usage? Will doing this make any difference?</FONT></SPAN></DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2 face=Arial>Your advice would be
greatly appreciated.</FONT></SPAN></DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2
face=Arial>Regards,</FONT></SPAN></DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=754332015-10052010><FONT size=2
face=Arial>Mick.</FONT></SPAN></DIV></BODY></HTML>