[Linux-cluster] Lockingstatistics

[David Teigland]

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