linux-kernel - Re: md deadlock (2.6.31-rc5-git2)

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Message-ID: <20090817213137.GA32521@redhat.com>
Date:	Mon, 17 Aug 2009 17:31:37 -0400
From:	Dave Jones <davej@...hat.com>
To:	Mike Snitzer <snitzer@...il.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: md deadlock (2.6.31-rc5-git2)

On Mon, Aug 17, 2009 at 05:16:25PM -0400, Mike Snitzer wrote:
 > On Mon, Aug 17, 2009 at 4:17 PM, Dave Jones <davej@...hat.com> wrote:
 > >
 > > This kernel is a bit old (it's what we froze on for Fedora 12 alpha,
 > > and we haven't started building install images with anything newer yet),
 > > but I don't recall seeing anything similar posted recently..
 > >
 > > While creating a series of md arrays, I got the mdadm process to just lock up.
 > > Looking in dmesg showed that it had warned about it too ..
 > ...
 > > 2 locks held by mdadm/2249:
 > >  #0:  (&new->reconfig_mutex#2){+.+.+.}, at: [<ffffffff813edcab>] mddev_lock+0x2a/0x40
 > >  #1:  (&bdev->bd_mutex){+.+.+.}, at: [<ffffffff8116ed21>] revalidate_disk+0x5e/0x9d
 > 
 > This was fixed with commit: c8c00a6915a2e3d10416e8bdd3138429beb96210

excellent! I missed that. thanks.

	Dave
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