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From: Andrew Morton <akpm@linux-foundation.org>
To: "Dan Williams" <dan.j.williams@intel.com>
Cc: "dean gaudet" <dean@arctic.org>, NeilBrown <neilb@suse.de>,
linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 001 of 6] md: Fix an occasional deadlock in raid5
Date: Tue, 15 Jan 2008 23:15:04 -0800 [thread overview]
Message-ID: <20080115231504.4df1b739.akpm@linux-foundation.org> (raw)
In-Reply-To: <e9c3a7c20801152309g28493cecx57efa8a8bba2fd21@mail.gmail.com>
On Wed, 16 Jan 2008 00:09:31 -0700 "Dan Williams" <dan.j.williams@intel.com> wrote:
> > heheh.
> >
> > it's really easy to reproduce the hang without the patch -- i could
> > hang the box in under 20 min on 2.6.22+ w/XFS and raid5 on 7x750GB.
> > i'll try with ext3... Dan's experiences suggest it won't happen with ext3
> > (or is even more rare), which would explain why this has is overall a
> > rare problem.
> >
>
> Hmmm... how rare?
>
> http://marc.info/?l=linux-kernel&m=119461747005776&w=2
>
> There is nothing specific that prevents other filesystems from hitting
> it, perhaps XFS is just better at submitting large i/o's. -stable
> should get some kind of treatment. I'll take altered performance over
> a hung system.
We can always target 2.6.25-rc1 then 2.6.24.1 if Neil is still feeling
wimpy.
next prev parent reply other threads:[~2008-01-16 7:15 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-14 1:45 [PATCH 000 of 6] md: various fixes for md NeilBrown
2008-01-14 1:45 ` [PATCH 001 of 6] md: Fix an occasional deadlock in raid5 NeilBrown
2008-01-16 5:01 ` dean gaudet
2008-01-16 5:54 ` Andrew Morton
2008-01-16 6:13 ` dean gaudet
2008-01-16 7:09 ` Dan Williams
2008-01-16 7:15 ` Andrew Morton [this message]
2008-01-16 21:54 ` Neil Brown
2008-01-14 1:45 ` [PATCH 002 of 6] md: Fix use-after-free bug when dropping an rdev from an md array NeilBrown
2008-01-14 2:04 ` Al Viro
2008-01-14 3:21 ` Neil Brown
2008-01-14 3:43 ` Al Viro
2008-01-14 4:48 ` Neil Brown
2008-01-14 6:28 ` Neil Brown
2008-01-14 12:59 ` Al Viro
2008-01-14 13:56 ` Al Viro
2008-01-14 1:45 ` [PATCH 003 of 6] md: Change a few 'int' to 'size_t' in md NeilBrown
2008-01-14 1:45 ` [PATCH 004 of 6] md: Change INTERATE_MDDEV to for_each_mddev NeilBrown
2008-01-14 1:45 ` [PATCH 005 of 6] md: Change ITERATE_RDEV to rdev_for_each NeilBrown
2008-01-14 1:45 ` [PATCH 006 of 6] md: Change ITERATE_RDEV_GENERIC to rdev_for_each_list, and remove ITERATE_RDEV_PENDING NeilBrown
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