Re: [dm-devel] Block regression since 3.1-rc3

From: Jeff Moyer
Date: Tue Oct 04 2011 - 09:33:01 EST

Christophe Saout <christophe@xxxxxxxx> writes:

> Hi Jeff,
>> Anyway, it would help a great deal if you could retrigger the failure
>> and provide the full failure output. You can get that by issuing the
>> 'dmesg' command and redirecting it to a file.
> Oh, sorry, yes, there's a line missing.
> 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...

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