From: Mike Snitzer <snitzer@redhat.com>
To: Eric Wheeler <dm-devel@ew.ewheeler.org>, dm-devel@redhat.com
Subject: Re: dm-thinp BUG at drivers/md/persistent-data/dm-btree-remove.c:188
Date: Thu, 14 Feb 2013 22:48:11 -0500 [thread overview]
Message-ID: <20130215034811.GA10038@redhat.com> (raw)
In-Reply-To: <20130215023400.GM24130@agk-dp.fab.redhat.com>
On Thu, Feb 14 2013 at 9:34pm -0500,
Alasdair G Kergon <agk@redhat.com> wrote:
> On Thu, Feb 14, 2013 at 06:07:56PM -0800, Eric Wheeler wrote:
> > Does this indicate a corrupt volume or metadata volume?
>
> It could be a software bug.
> It is always worth trying the newest code, but I don't spot any
> obvious change that could be related to this.
...
> The trace shows it's applying a 'discard' to the metadata and releasing
> blocks when the problem occurs.
Right, given that the BUG trace shows active discards it could be that
v3.8 commit e808807 ("dm thin: fix race between simultaneous io and
discards to same block") may help.
(though I never saw that race manifest with the BUG in question)
next prev parent reply other threads:[~2013-02-15 3:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-15 2:07 dm-thinp BUG at drivers/md/persistent-data/dm-btree-remove.c:188 Eric Wheeler
2013-02-15 2:34 ` Alasdair G Kergon
2013-02-15 3:48 ` Mike Snitzer [this message]
2013-02-15 5:12 ` Eric Wheeler
2013-02-15 3:49 ` Eric Wheeler
2013-02-15 10:52 ` thornber
2013-02-15 23:21 ` Eric Wheeler
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