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From: David Chinner <dgc@sgi.com>
To: Michael Tokarev <mjt@tls.msk.ru>,
	Andi Kleen <andi@firstfloor.org>,
	dm-devel@redhat.com, linux-kernel@vger.kernel.org,
	Milan Broz <mbroz@redhat.com>
Subject: Re: [PATCH] Implement barrier support for single device DM devices
Date: Tue, 19 Feb 2008 22:12:22 +1100	[thread overview]
Message-ID: <20080219111222.GE155407@sgi.com> (raw)
In-Reply-To: <20080219023900.GB4066@agk.fab.redhat.com>

On Tue, Feb 19, 2008 at 02:39:00AM +0000, Alasdair G Kergon wrote:
> > For example, how safe
> > xfs is if barriers are not supported or turned off?  
> 
> The last time we tried xfs with dm it didn't seem to notice -EOPNOTSUPP
> everywhere it should => recovery may find corruption.

Bug reports, please. What we don't know about, we can't fix.

As of this commit:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0bfefc46dc028df60120acdb92062169c9328769

XFS should be handling all cases of -EOPNOTSUPP for barrier
I/Os. If you are still having problems, please let us know.

Cheers,

Dave.
-- 
Dave Chinner
Principal Engineer
SGI Australian Software Group

      reply	other threads:[~2008-02-19 11:13 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-15 12:08 [PATCH] Implement barrier support for single device DM devices Andi Kleen
2008-02-15 12:20 ` Alasdair G Kergon
2008-02-15 13:07   ` Michael Tokarev
2008-02-15 14:20     ` Andi Kleen
2008-02-15 14:12       ` [dm-devel] " Alasdair G Kergon
2008-02-15 15:34         ` Andi Kleen
2008-02-15 15:31           ` Alan Cox
2008-02-18 12:48         ` Ric Wheeler
2008-02-18 13:24           ` Michael Tokarev
2008-02-18 13:52             ` Ric Wheeler
2008-02-19  2:45               ` Alasdair G Kergon
2008-05-16 19:55                 ` Mike Snitzer
2008-05-16 21:48                   ` Andi Kleen
2008-02-18 22:16             ` David Chinner
2008-02-19  2:56               ` Alasdair G Kergon
2008-02-19  5:36                 ` David Chinner
2008-02-19  9:43                 ` Andi Kleen
2008-02-19  7:19               ` Jeremy Higdon
2008-02-19  7:58                 ` Michael Tokarev
2008-02-20 13:38                 ` Ric Wheeler
2008-02-21  3:29                 ` Neil Brown
2008-02-21  3:39               ` Neil Brown
2008-02-17 23:31     ` David Chinner
2008-02-19  2:39     ` Alasdair G Kergon
2008-02-19 11:12       ` David Chinner [this message]

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