[Linux-cluster] GFS locking issues
David Teigland
teigland at redhat.com
Thu Jun 15 19:09:59 UTC 2006
On Thu, Jun 15, 2006 at 01:43:25AM +0300, Anton Kornev wrote:
> Is there any ideas of how to fix this? I mean either the reason ('D'
> state of killed httpd-s) or consequences (the GFS filesystem fully or
> partially become unavailable after this).
>
> I also appreciate any help with debugging the problem.
>
> I tried gfs_tool lockdump with decipher_lockstate_dump tool.
I don't see anything wrong in the lockdumps you gave, although I'm not an
expert at interpreting gfs lockdumps. Could you do a ps showing the wchan
for those processes? Using sysrq to get a stack dump would also be useful.
You might also do a dlm lock dump and pick out those locks:
echo "lockspace name" >> /proc/cluster/dlm_locks
cat /proc/cluster/dlm_locks
I/O stuck in gnbd could also be a problem, I'm not sure what the signs of
that might be apart from possibly the wchan.
Dave
More information about the Linux-cluster
mailing list