From: Eric Sandeen <sandeen@sandeen.net>
To: Michael Monnerie <michael.monnerie@is.it-management.at>
Cc: xfs@oss.sgi.com
Subject: Re: xfs_force_shutdown after Raid crash
Date: Mon, 02 Feb 2009 21:13:55 -0600 [thread overview]
Message-ID: <4987B673.8030406@sandeen.net> (raw)
In-Reply-To: <200902030222.47644@zmi.at>
Michael Monnerie wrote:
> On Samstag 31 Januar 2009 Christoph Hellwig wrote:
>> This looks like you were running with a write back cache enabled on
>> the controller / disks but without barriers.
>
> I've read that this is dangerous. How can I tell if I suffer the same? I
> use an Areca 1680 SAS RAID Controller with 2GB Cache, so there could be
> a lot of writes in it.
>
> mfg zmi
you'd need to read the docs for your controller, to find out how to tell
if it has a writeback cache enabled, and whether it is batter-backed or not.
-Eric
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next prev parent reply other threads:[~2009-02-03 3:49 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-30 21:53 xfs_force_shutdown after Raid crash Steffen Knauf
2009-01-31 10:57 ` Christoph Hellwig
2009-02-03 1:22 ` Michael Monnerie
2009-02-03 3:13 ` Eric Sandeen [this message]
2009-02-03 9:22 ` Michael Monnerie
2009-02-03 9:32 ` Christoph Hellwig
2009-02-03 10:40 ` Michael Monnerie
2009-02-03 15:49 ` Christoph Hellwig
2009-02-04 8:52 ` Michael Monnerie
2009-02-04 10:27 ` Michael Monnerie
2009-02-04 12:26 ` Dave Chinner
2009-02-04 15:03 ` Michael Monnerie
2009-02-13 10:12 ` Michael Monnerie
2009-02-04 12:22 ` Dave Chinner
2009-02-04 12:45 ` Emmanuel Florac
2009-02-04 14:01 ` KELEMEN Peter
2009-02-04 15:15 ` Emmanuel Florac
2009-02-04 15:25 ` Michael Monnerie
2009-02-04 15:41 ` KELEMEN Peter
2009-02-04 16:01 ` Michael Monnerie
2009-02-04 16:23 ` Emmanuel Florac
2009-02-04 15:24 ` Michael Monnerie
2009-02-05 8:37 ` Dave Chinner
2009-02-04 15:33 ` Ralf Liebenow
2009-02-04 16:18 ` Michael Monnerie
2009-02-05 8:22 ` Michael Monnerie
2009-02-05 12:05 ` Emmanuel Florac
2009-02-06 15:57 ` Steffen Knauf
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