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From: Milan Broz <mbroz@redhat.com>
To: David Chinner <dgc@sgi.com>
Cc: Christian Kujau <lists@nerdbynature.de>,
	LKML <linux-kernel@vger.kernel.org>,
	xfs@oss.sgi.com, dm-devel@redhat.com
Subject: Re: INFO: task mount:11202 blocked for more than 120 seconds
Date: Fri, 14 Mar 2008 10:27:07 +0100	[thread overview]
Message-ID: <47DA44EB.8000307@redhat.com> (raw)
In-Reply-To: <20080309213441.GQ155407@sgi.com>

David Chinner wrote:
>>> Also, the iolock can be held across I/O so it's possible you've lost an 
>>> I/O. Any I/O errors in the syslog?
>> No, no I/O errors at all. See the kern.log above, I could even do dd(1) 
>> from the md1 (dm-crypt on raid1), no errors either.
> 
> Oh, dm-crypt. Well, I'd definitely start looking there. XFS has a
> history of exposing dm-crypt bugs, and these hangs appear to be I/O
> congestion/scheduling related and not XFS. Also, we haven't changed
> anything related to plug/unplug of block devices in XFS recently, so
> that also points to some other change as well...

Yes, there is bug in dm-crypt...
Please try if the patch here helps: http://lkml.org/lkml/2008/3/14/71

Thanks,
Milan
--
mbroz@redhat.com


  parent reply	other threads:[~2008-03-14  9:28 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-07 20:32 Christian Kujau
2008-03-07 22:40 ` David Chinner
2008-03-07 23:46   ` Christian Kujau
2008-03-08  1:54     ` Christian Kujau
2008-03-09  6:15       ` 2.6.25-rc hangs (was: INFO: task mount:11202 blocked for more than 120 seconds) Christian Kujau
2008-03-09 16:44         ` 2.6.25-rc hangs Eric Sandeen
2008-03-09 18:05           ` Christian Kujau
     [not found]             ` <47D42AD6.10500@sandeen.net>
2008-03-09 18:49               ` Christian Kujau
2008-03-12 18:06                 ` Samuel Tardieu
2008-03-12 21:02                   ` Christian Kujau
2008-03-09 21:34     ` INFO: task mount:11202 blocked for more than 120 seconds David Chinner
2008-03-10  1:46       ` Christian Kujau
2008-03-12 18:03       ` Samuel Tardieu
2008-03-12 19:53         ` Chr
2008-03-12 23:07           ` Christian Kujau
2008-03-13 13:45             ` Christian Kujau
2008-03-13 21:33               ` Chr
2008-03-13 21:54                 ` Christian Kujau
2008-03-14  0:15                   ` Chr
2008-03-14  9:27       ` Milan Broz [this message]
2008-03-14 23:58         ` Christian Kujau
2008-03-16 20:33           ` David Chinner
2008-03-15  0:08         ` Chr
2008-03-15 13:32           ` [dm-crypt] " Chr
2008-03-15 21:34             ` Chr
2008-03-16 13:08               ` Christian Kujau
2008-03-17 17:36                 ` Alasdair G Kergon
2008-03-17 18:36                   ` Chr
2008-03-18 17:46                     ` Christian Kujau
2008-03-18  0:56                   ` Herbert Xu
2008-03-18  4:07                     ` Milan Broz
2008-03-22  2:52                   ` Christian Kujau
2008-03-27  8:21                     ` Christian Kujau
2008-03-26 16:57                   ` Chr

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