[xfs-masters] Re: [Bugme-new] [Bug 7364] New: nbd dead-lock/panic with PREEMPT enabled

[Paul Clements <paul.clements@xxxxxxxxxxxx>]

David Chinner wrote:
> On Wed, Jan 31, 2007 at 12:39:33AM -0800, Andrew Morton wrote:
>> See http://bugzilla.kernel.org/show_bug.cgi?id=7364
>>
>> This guy has XFS deadlocks.  And stack overruns, but we knew about that.
>>
>> Perhaps the deadlocks are due to NBD?

> So, there's no deadlocks in XFS here - XFs is simply waiting for the
> I/O it issued to complete. I think this pretty clearly indicates an
> NBD problem.

Maybe a network problem, but there's nothing in these stack traces to 
implicate nbd. The only process that's in nbd code is the nbd-client, 
which is doing what it normally does: sitting and waiting for replies 
from the server. Any details about what was going on at the time of the 
deadlock?

--
Paul