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Re: [Linux-cluster] Lockingstatistics



David Teigland wrote:
On Tue, Jan 16, 2007 at 10:32:32AM +0100, Marc Grimme wrote:
Hello,
is there a way to get a status on which node has which files locked and in what state?
Background:
We sometimes see processes ending up in deadlocks. And it is always very difficult to see which lock causes the problem. It would be very helpfull to get a dump on all the locks held by a given node in reference to the locked file.
In RHEL4 you can dump locks from gfs or the dlm:
gfs_tool lockdump <mountpoint>
echo "lockspace name" >> /proc/cluster/dlm_locks
cat /proc/cluster/dlm_locks

The number in type 2 locks is the inode number.

Dave
Hey, Marc. Funny you should ask; I just added those to the FAQ on Monday. See:

http://sourceware.redhat.com/cluster/faq.html#lock_dump_gfs

and

http://sourceware.redhat.com/cluster/faq.html#lock_dump_dlm

Regards,

Bob Peterson
Red Hat Cluster Suite


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