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From: Paul Clements <paul.clements@steeleye.com>
To: Gil <gil@fooplanet.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: md: Change ENOTSUPP to EOPNOTSUPP
Date: Mon, 01 May 2006 21:54:44 -0400	[thread overview]
Message-ID: <4456BBE4.2000706@steeleye.com> (raw)
In-Reply-To: <445633D4.2000607@fooplanet.com>

Gil wrote:
> So for those of us using other filesystems (e.g. ext2/3), is there
> some way to determine whether or not barriers are available?

You'll see something like this in your system log if barriers are not 
supported:

Apr  3 16:44:01 adam kernel: JBD: barrier-based sync failed on md0 - 
disabling barriers


Otherwise, assume that they are. But like Neil said, it shouldn't matter 
to a user whether they are supported or not. Filesystems will work 
correctly either way.

--
Paul

  reply	other threads:[~2006-05-02  1:54 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-04-28  2:51 [PATCH 000 of 5] md: Introduction - assorted raid10/raid1 fixes NeilBrown
2006-04-28  2:50 ` [PATCH 001 of 5] md: Avoid oops when attempting to fix read errors on raid10 NeilBrown
2006-05-01 21:52   ` [stable] " Greg KH
2006-04-28  2:51 ` [PATCH 002 of 5] md: Fixed refcounting/locking when attempting read error correction in raid10 NeilBrown
2006-04-28  2:51 ` [PATCH 003 of 5] md: Change ENOTSUPP to EOPNOTSUPP NeilBrown
2006-04-28 13:34   ` Molle Bestefich
2006-04-28 16:48     ` Ric Wheeler
2006-04-29 13:50       ` Molle Bestefich
2006-04-29 20:23         ` Ric Wheeler
2006-05-01 16:14           ` Gil
2006-05-02  1:54             ` Paul Clements [this message]
2006-05-02  2:17               ` Mike Hardy
2006-05-02 11:37               ` Ric Wheeler
2006-04-30  4:13     ` [PATCH 003 of 5] " Neil Brown
2006-04-30  5:33       ` Guy
2006-04-30  6:00         ` Neil Brown
2006-04-28  2:51 ` [PATCH 004 of 5] md: Improve detection of lack of barrier support in raid1 NeilBrown
2006-04-28  2:51 ` [PATCH 005 of 5] md: Fix 'rdev->nr_pending' count when retrying barrier requests NeilBrown

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