Re: md raid6 deadlock on write

[Jose Manuel dos Santos Calhariz <jose.calhariz@netvisao.pt>]

[-- Attachment #1: Type: text/plain, Size: 1455 bytes --]

On Mon, Jul 09, 2012 at 01:46:53PM +1000, NeilBrown wrote:
> On Fri, 6 Jul 2012 14:55:24 +0100 Jose Manuel dos Santos Calhariz
> <jose.calhariz@netvisao.pt> wrote:
> 
> > On Wed, Jul 04, 2012 at 11:24:11AM +0100, Jose Manuel dos Santos Calhariz wrote:
> > > On Wed, Jul 04, 2012 at 11:38:11AM +1000, NeilBrown wrote:
> > > > On Mon, 2 Jul 2012 23:15:08 +0100 Jose Manuel dos Santos Calhariz
> > > > <jose.calhariz@netvisao.pt> wrote:
> > > > 
> > > > > 
> > > > > We have a group of servers with a LVM over a RAID6 of 16 drives.
> > > > > During normal work loads, sometimes, the md raid enter on deadlock for
> > > > > writes and only a power off/power on allows to recover the machine.
> > > > 
> > > > This might be fixed by the following commit which was recently included in
> > > > 3.5-rc. If could test with that I'd appreciate it.
> > > 
> > > We will do it, at first opportunity.
> > 
> > We have two machines that are running fio for 24 hours without
> > problems.  So the bug seams to be fixed, thank you.
> 
> Thanks for testing and reported.
> 
> 
> > 
> > Any possibility of the fix being ported to kernel 3.2?
> 
> It seems that I didn't tag that patch for -stable so it won't automatically
> get included.  I'll send it the old way - maybe it'll get into
> 3.2.23.

That would be great. 

> 
> Thanks,
> NeilBrown
> 

     Jose Calhariz

-- 
--
Preguiça é o habito de descansar antes da fadiga.

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]