From: NeilBrown <neilb@suse.de>
To: Asdo <asdo@shiftmail.org>
Cc: "Iordan Iordanov" <iordan@cdf.toronto.edu>,
"Mathias Burén" <mathias.buren@gmail.com>, b2 <b2@playtime.bg>,
linux-raid@vger.kernel.org
Subject: Re: debian software raid1
Date: Wed, 20 Apr 2011 22:40:14 +1000 [thread overview]
Message-ID: <20110420224014.173a030a@notabene.brown> (raw)
In-Reply-To: <4DAEB55D.1010108@shiftmail.org>
On Wed, 20 Apr 2011 12:28:45 +0200 Asdo <asdo@shiftmail.org> wrote:
> On 04/20/11 00:51, NeilBrown wrote:
> > If there was such a deadlock, it would be a serious bug. I don't believe
> > such a bug exists (but hey - I keep finding bugs in this code, when I'm not
> > busy writing new bugs, so I guess it could crash you machine and kill your
> > cat).
> >
>
> I am aware that raids 0,1,10 do not copy the buffer so I don't think
> there is risk of deadlock...
>
> Raids 456 do copy the buffer... but the destination buffers are
> preallocated, right?
Correct - destination buffers - when used - are preallocated.
If this were not the case you would get deadlocks in normal usage without
having to wait for suspend/resume to trigger them.
NeilBrown
next prev parent reply other threads:[~2011-04-20 12:40 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-19 12:12 debian software raid1 b2
2011-04-19 12:25 ` Mathias Burén
2011-04-19 16:03 ` Iordan Iordanov
2011-04-19 21:10 ` Gordon Henderson
2011-04-19 21:33 ` Steven Haigh
2011-04-19 22:01 ` Roberto Spadim
2011-04-19 22:05 ` Mathias Burén
2011-04-19 22:51 ` NeilBrown
2011-04-20 0:33 ` Joe Landman
2011-04-20 1:12 ` NeilBrown
2011-04-20 14:59 ` Iordan Iordanov
2011-04-20 14:51 ` Iordan Iordanov
2011-04-21 6:15 ` Luca Berra
2011-04-21 14:50 ` Iordan Iordanov
2011-04-22 5:59 ` Luca Berra
2011-04-22 19:19 ` Iordan Iordanov
2011-04-22 19:28 ` Mikael Abrahamsson
2011-04-23 0:07 ` Iordan Iordanov
2011-04-20 10:28 ` Asdo
2011-04-20 12:40 ` NeilBrown [this message]
2011-04-23 8:33 ` Jan Ceuleers
2011-04-22 19:21 ` Iordan Iordanov
2011-04-22 22:12 ` NeilBrown
2011-04-23 0:05 ` Iordan Iordanov
2011-04-23 12:54 ` David Brown
2011-04-23 14:23 ` Keld Jørn Simonsen
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