[Ocfs2-users] Catatonic nodes under SLES10

[Alexei_Roudnev]

Did you checked

 /proc/sys/kernel/panic  /proc/sys/kernel/panic_on_oops

system variables?

----- Original Message ----- 
From: "David Miller" <syslog at d.sparks.net>
To: <ocfs2-users at oss.oracle.com>
Sent: Monday, April 02, 2007 9:01 AM
Subject: [Ocfs2-users] Catatonic nodes under SLES10


> Good afternoon all;
> 
> I'm planning on implementing a shared storage solution for a primary and 
> backup oracle server in the near future.
> 
> We can't afford RAC, and we don't have performance or growth issues; we 
> just want another system to be able to start up and run if the primary 
> fails.
> 
> 
> Both servers will be connected to a dual-host external RAID system.  
> I've setup ocfs2 on a couple of test systems and everything appears to 
> work fine.
> 
> Until, that is, one of the systems loses network connectivity.
> 
> When the systems can't talk to each other anymore, but the disk 
> heartbeat is still alive, the high numbered node goes catatonic.  Under 
> SLES 9 it fenced itself off with a kernel panic; under 10 it simply 
> stops responding to network or console.  A power cycling is required to 
> bring it back up.
> 
> The desired behavior would be for the higher numbered node to lose 
> access to the ocfs2 file system(s).  I don't really care whether it 
> would simply timeout ala stale NFS mounts, or immediately error like 
> access to non-existent files.
> 
> 
> I'm running the latest SuSE packaged version of the ocfs-tools package:
> 
> saltlake:/proc/fs # cat /proc/fs/ocfs2/version
> OCFS2 1.2.1-SLES Tue Apr 25 14:46:36 PDT 2006 (build sles)
> saltlake:/proc/fs #
> 
> I'm using the stock 10.0 release kernel:
> 
> saltlake:/proc/fs # uname -a
> Linux saltlake 2.6.16.21-0.8-smp #1 SMP Mon Jul 3 18:25:39 UTC 2006 i686 
> i686 i386 GNU/Linux
> saltlake:/proc/fs #
> 
> 
> 
> 
> 
> Is there a solution to this?  Is this expected behavior?
> 
> Thanks,
> 
> --- David
> 
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