[Ocfs2-users] Catatonic nodes under SLES10

[David Miller]

Alexei_Roudnev wrote:
> Did you checked
>
>  /proc/sys/kernel/panic  /proc/sys/kernel/panic_on_oops
>
> system variables?
>   

No.  Maybe I'm missing something here.

Are you saying that a panic/freeze/reboot is the expected/desirable 
behavior?  That nothing more graceful could be done, like to just 
dismount the ocfs2 file systems, or force them to a read-only mount or 
something like that?  We have to reload the kernel?

Thanks,

--- David

> ----- 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
>   

[snip]

> 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.
>
>