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From: Martin Steigerwald <Martin@lichtvoll.de>
To: linux-xfs@oss.sgi.com
Cc: Eric Sandeen <sandeen@sandeen.net>
Subject: Re: md raid1 passes barriers, but xfs doesn't use them?
Date: Tue, 24 Jun 2008 16:25:17 +0200	[thread overview]
Message-ID: <200806241625.17511.Martin@lichtvoll.de> (raw)
In-Reply-To: <4860F7E4.2080106@sandeen.net>

Am Dienstag 24 Juni 2008 schrieb Eric Sandeen:
> Martin Steigerwald wrote:
> > Hi Eric!

[...]

> > Did you test with ext3 too?
>
> This is xfs-specific; ext3 does not look for the queue ordered flag so
> won't have this problem on md raid1.
>
> > [1] http://bugzilla.kernel.org/show_bug.cgi?id=9554
>
> but that's for device-mapper, which has never supported barriers ....
> I'm talking about md raid1 here (not dm).

Thanks for the info. My misunderstanding - I always thought and I thought 
I even read it somewhere - that md was  a device mapper application.

Ciao,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7

  reply	other threads:[~2008-06-24 14:24 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-24  2:23 md raid1 passes barriers, but xfs doesn't use them? Eric Sandeen
2008-06-24  9:31 ` Martin Steigerwald
2008-06-24 13:34   ` Eric Sandeen
2008-06-24 14:25     ` Martin Steigerwald [this message]
2008-06-24 22:57 ` Dave Chinner
2008-06-25  1:49   ` Eric Sandeen

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