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From: Christophe Saout <christophe@saout.de>
To: Jeff Moyer <jmoyer@redhat.com>
Cc: device-mapper development <dm-devel@redhat.com>,
	linux-kernel@vger.kernel.org, Jens Axboe <axboe@kernel.dk>
Subject: Re: [dm-devel] Block regression since 3.1-rc3
Date: Tue, 04 Oct 2011 17:06:09 +0200	[thread overview]
Message-ID: <1317740769.25998.11.camel@localhost> (raw)
In-Reply-To: <x49pqicnapu.fsf@segfault.boston.devel.redhat.com>

Hi Jeff,

> > Line 323 is this one: BUG_ON(!rq->bio || rq->bio != rq->biotail);
> >
> > The bug is not specific to GFS2, I also get it when using an ext3 mount
> > on that multipath storage pool when writing to a file.
> 
> Great, thanks!  I tried ext3 and ext4 as well, and was unable to trigger
> this problem.  I setup a linear volume on top of a multipath device.  Is
> that the configuration you are using?  Anyway, this may be enough to get
> me on the right path...

Yes - the device-mapper tables looks like:

vserv81:/root # dmsetup table RAID_A-test.root
0 20971520 linear 253:6 384

(this is one the FS which causes the crash when mounting via ext3)

And 253:6 is the multipath device:

vserv81:/root # dmsetup table 3600d023100065bef0000000009f337c0
0 15626018816 multipath 0 0 2 1 round-robin 0 1 1 8:16 1000 round-robin 0 1 1 8:48 1000 

And 8:16, 8:48 are two qla2xxx FC ports.

Cheers,
	Christophe



  reply	other threads:[~2011-10-04 15:06 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-30 15:51 Block regression since 3.1-rc3 Christophe Saout
2011-09-30 15:51 ` Christophe Saout
2011-09-30 18:02 ` [dm-devel] " Christophe Saout
2011-10-03 14:43 ` Jeff Moyer
2011-10-04 12:02   ` Christophe Saout
2011-10-04 13:32     ` Jeff Moyer
2011-10-04 15:06       ` Christophe Saout [this message]
2011-10-06 19:51     ` Jeff Moyer
2011-10-06 22:02       ` Christophe Saout
2011-10-08 11:02       ` Shaohua Li
2011-10-08 12:05         ` Christophe Saout
2011-10-08 12:05           ` Christophe Saout
2011-10-09  4:26           ` Shaohua Li
2011-11-01  4:54           ` illdred
2011-10-08 16:14         ` Mike Snitzer
2011-10-09  4:31           ` Shaohua Li
2011-10-09  7:16             ` Shaohua Li
2011-10-09  7:16               ` Shaohua Li
2011-10-09  8:12               ` Christophe Saout
2011-10-09 13:47                 ` Christophe Saout
2011-10-10 21:33           ` Tejun Heo
2011-10-11 19:56             ` Mike Snitzer
2011-10-11 20:52               ` Tejun Heo
2011-10-11 22:07                 ` Jeff Moyer
2011-10-09  8:08       ` [dm-devel] " Shaohua Li

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