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<DIV><FONT face=Calibri>Hello all,</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>I have an enviroment with 2 Debian 5.0 servers.
</FONT></DIV>
<DIV><FONT face=Calibri>Kernel is 2.6.26-2-amd64. I have installed drbd-8.0.14
and ocfs2-tools 1.4.1.</FONT></DIV>
<DIV><FONT face=Calibri>It is an Active/Active WebCluster with
Apache.</FONT></DIV>
<DIV><FONT face=Calibri>The 2 servers write to the same log files.</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>In my test enviroment everything works fine. In the
production environment I have the problem, that after a few weeks the
Apache-Servers goes crazy and get a very high load >100.</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>First I thought the problem may be drbd, but I
have read many problemes with ocfs2 and apache load average.</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>The curios thing is that the load is often very high at
times where request are very small ( eg. 11:00 PM )</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>I've disconnected the second webserver from the network
and checked the filesystem. A few bitmap errors occured and i repaired them.
Then I changed the drbd config so, that only webserver 1 is primary and the
webserver 2 is secondary. So webserver 2 cannot write to the device.
</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>After I connect the webserver 2 to the network
again and the sync from the primary starts. The load on webserver 1 is going
> 100.</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>I have also tested the connection with webserver 2 with
disconnected drbd. I discovered that the load on webserver 1 is going i little
higher also.</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>Is there any solution for the ocfs2 load problem with
apache?</FONT></DIV>
<DIV><FONT face=Calibri>If there is no solution I hvae to change from
active/active to active/passive with ext3 as filesystem.</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>Please, help me.</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>Thanks a lot</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>Andreas</FONT></DIV></BODY></HTML>