From: Andi Kleen <andi@firstfloor.org>
To: Allan Haywood <Allan.Haywood@microsoft.com>
Cc: Dave Chinner <david@fromorbit.com>, "xfs@oss.sgi.com" <xfs@oss.sgi.com>
Subject: Re: xfs file system corruption
Date: Wed, 08 Oct 2008 02:15:29 +0200 [thread overview]
Message-ID: <87r66skkm6.fsf@basil.nowhere.org> (raw)
In-Reply-To: <E8DED08235A93F4D8A2AB6CD0ABAB32A0A937FC922@NA-EXMSG-C121.redmond.corp.microsoft.com> (Allan Haywood's message of "Tue, 7 Oct 2008 16:49:40 -0700")
Allan Haywood <Allan.Haywood@microsoft.com> writes:
>
> Would reloading the xfs module work also, to clear any pending
> writes (if I could get it to a point where modprobe -r xfs
> would work)? Although I am doubting that if there are pending
> writes that it would be easy to get xfs to unload.
Linux doesn't have IO cancel and it's hard to stop everything
in the IO stack, so the usual way is to fence it at a high level
and then wait for all pending IO. But that might take a long time.
That is why most HA setups use hard stonith, as in power switch.
-Andi
--
ak@linux.intel.com
prev parent reply other threads:[~2008-10-08 0:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-07 23:18 xfs file system corruption Allan Haywood
2008-10-07 23:34 ` Dave Chinner
2008-10-07 23:49 ` Allan Haywood
2008-10-07 23:58 ` Allan Haywood
2008-10-08 0:12 ` Dave Chinner
2008-10-08 0:15 ` Andi Kleen [this message]
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