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Re: [PATCH] Inode reclaim fixes (was Re: 2.6.31 xfs_fs_destroy_inode: ca

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [PATCH] Inode reclaim fixes (was Re: 2.6.31 xfs_fs_destroy_inode: cannot reclaim)
From: Patrick Schreurs <patrick@xxxxxxxxxxxxxxxx>
Date: Mon, 01 Feb 2010 17:52:30 +0100
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Tommy van Leeuwen <tommy@xxxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <4B504B03.7050604@xxxxxxxxxxxxxxxx>
References: <89c4f90c0910270341r7833f490g60810f2817eb0950@xxxxxxxxxxxxxx> <89c4f90c0910280519k759230c1r7b1586932ac792f7@xxxxxxxxxxxxxx> <20091030101601.GA11142@xxxxxxxxxxxxx> <4AF0422D.1070104@xxxxxxxxxxxxxxxx> <20091114162126.GB17658@xxxxxxxxxxxxx> <4B0A8075.8080008@xxxxxxxxxxxxxxxx> <20091211115932.GA20632@xxxxxxxxxxxxx> <4B3F9F88.9030307@xxxxxxxxxxxxxxxx> <20100107110446.GA13802@xxxxxxxxxxxxxxxx> <4B45CFAC.4000607@xxxxxxxxxxxxxxxx> <20100108113114.GA8654@xxxxxxxxxxxxxxxx> <4B504B03.7050604@xxxxxxxxxxxxxxxx>
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Hello Dave,

I'm afraid we had another crash a few days ago. Have a look at the screenshot. Can you make anything out of it? This server is running with your inode-reclaim patch applied and XFS_DEBUG still enabled.

Thanks for looking into this.


On 15-1-2010 12:01, Patrick Schreurs wrote:
Hi Dave,

I think it's save to consider this issue fixed. We have currently 9
servers operational with these patches and they have been stable so far.
For a 100% certainty we'll have to test/wait a little bit longer, but
considering the frequency of crashes we saw earlier i think it's save to
come to a conclusion.

I hope these patches will be included in 2.6.33 and will be back ported
to at least 2.6.32.

Many thanks to Dave and to Christoph for fixing this apparently rare and
seldom triggered condition.


Dave Chinner wrote:
Hi Patrick,

I've attached two compendium patches that will hopefully fix
the inode reclaim problems you've been seeing - one is for 2.6.31,
the other is for 2.6.32. I've cc'd this to the XFS list ѕo that
anyone else who has been seeing crashes, assert failures and
general nastiness around inode reclaim can test them as well.

These are not final patches - there's a few changes that Christoph
has picked up on during review - so there'll be another round of
patches before checkins and -stable backports can be requested.

I'm hoping that these patches fix your problem, because with them
I can't make my machines fall over anymore....




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