Re: Deadlock/high load

2014-06-20 Thread Alin Dobre
On 12/06/14 16:15, Alin Dobre wrote: > Hi all, > > I have a problem that triggers quite often on our production machines. I > don't really know what's triggering this or how to reproduce it, but the > machine enters in some sort of deadlock state, where it consumes all the > i/o and the load avera

Re: Deadlock/high load

2014-06-12 Thread Alin Dobre
On 13/06/14 04:37, Liu Bo wrote: > The output of 'btrfs filesystem df' is appreciate, it can help determine if > the > FS has entered into 'almost full' situation, and that may cause a bug that > pages > are not marked with writeback tag and lead to processes's endless waiting. The output now (w

Re: Deadlock/high load

2014-06-12 Thread Alin Dobre
On 13/06/14 04:37, Liu Bo wrote: > The output of 'btrfs filesystem df' is appreciate, it can help determine if > the > FS has entered into 'almost full' situation, and that may cause a bug that > pages > are not marked with writeback tag and lead to processes's endless waiting. I'll send it as s

Re: Deadlock/high load

2014-06-12 Thread Liu Bo
On Thu, Jun 12, 2014 at 04:15:27PM +0100, Alin Dobre wrote: > Hi all, > > I have a problem that triggers quite often on our production machines. I > don't really know what's triggering this or how to reproduce it, but the > machine enters in some sort of deadlock state, where it consumes all the >

Deadlock/high load

2014-06-12 Thread Alin Dobre
Hi all, I have a problem that triggers quite often on our production machines. I don't really know what's triggering this or how to reproduce it, but the machine enters in some sort of deadlock state, where it consumes all the i/o and the load average goes very high in seconds (it even gets to ove