Re: [Xen-users] Random I/O deadlocks in multiple clouds

[Alessandro Grassi <alessandro.grassi@xxxxxxxxx>]

On Mon, 2011-11-14 at 14:48 +0100, Alessandro Grassi wrote:
> On Mon, 2011-11-14 at 11:48 +0100, Alessandro Grassi wrote:
> > INFO: task [random program] blocked for more than 120 seconds.
> [..]
> > The trace suggests it's an I/O problem, but the crashes don't seem to
> > follow a pattern: they happen during high as well as low I/O traffic,
> > high/low cpu load, high/low memory usage.
> [..]
> > The domUs are all running PVOPS enabled kernels (2.6.32+), in a mix of
> > vanilla+grsec, debian stock and debian backports (lenny/squeeze).
> 
> I forgot to add a thing that might be useful for what i'm reading on old
> discussions.
> All the machines i run use XFS.

To all those who might be curious about this issue:

The file system has nothing to do with the issue.
The problem seems to have vanished on virtual machines running kernels
from 2.6.39 up.

Best regards,

Alessandro

-- 
Alessandro Grassi - System Manager at Devise.It S.r.l.
Tel: +39 0574870600 | Fax: +39 0574870601


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