Re: deadlock on vmap_area_lock

2013-05-02 Thread Shawn Bohrer
On Thu, May 02, 2013 at 08:03:04AM +1000, Dave Chinner wrote: > On Wed, May 01, 2013 at 08:57:38AM -0700, David Rientjes wrote: > > On Wed, 1 May 2013, Shawn Bohrer wrote: > > > > > I've got two compute clusters with around 350 machines each which are > > > running kernels based off of 3.1.9 (Yes

Re: deadlock on vmap_area_lock

2013-05-01 Thread Dave Chinner
On Wed, May 01, 2013 at 08:57:38AM -0700, David Rientjes wrote: > On Wed, 1 May 2013, Shawn Bohrer wrote: > > > I've got two compute clusters with around 350 machines each which are > > running kernels based off of 3.1.9 (Yes I realize this is ancient by > > todays standards). xfs_info output of

Re: deadlock on vmap_area_lock

2013-05-01 Thread David Rientjes
On Wed, 1 May 2013, Shawn Bohrer wrote: > Correct it doesn't and I can't prove the find command is not making > progress, however these finds normally complete in under 15 min and > we've let the stuck ones run for days. Additionally if this was just > contention I'd expect to see multiple thread

Re: deadlock on vmap_area_lock

2013-05-01 Thread Shawn Bohrer
On Wed, May 01, 2013 at 08:57:38AM -0700, David Rientjes wrote: > On Wed, 1 May 2013, Shawn Bohrer wrote: > > > I've got two compute clusters with around 350 machines each which are > > running kernels based off of 3.1.9 (Yes I realize this is ancient by > > todays standards). All of the machines

Re: deadlock on vmap_area_lock

2013-05-01 Thread David Rientjes
On Wed, 1 May 2013, Shawn Bohrer wrote: > I've got two compute clusters with around 350 machines each which are > running kernels based off of 3.1.9 (Yes I realize this is ancient by > todays standards). All of the machines run a 'find' command once an > hour on one of the mounted XFS filesystems

deadlock on vmap_area_lock

2013-05-01 Thread Shawn Bohrer
I've got two compute clusters with around 350 machines each which are running kernels based off of 3.1.9 (Yes I realize this is ancient by todays standards). All of the machines run a 'find' command once an hour on one of the mounted XFS filesystems. Occasionally these find commands get stuck req