linux-kernel - Re: Performance of ext4

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Message-ID: <20080612180605.GD22481@skywalker>
Date:	Thu, 12 Jun 2008 23:36:05 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	Holger Kiehl <Holger.Kiehl@....de>
Cc:	Theodore Tso <tytso@....edu>, Solofo.Ramangalahy@...l.net,
	Nick Dokos <nicholas.dokos@...com>, linux-ext4@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Performance of ext4

On Thu, Jun 12, 2008 at 02:07:30PM +0000, Holger Kiehl wrote:
> This time there is no OOPS and system is still up running without any
> problem (except any process wanting to write something to this filesystem
> gets stuck forever).
>
> What can I do to help find the problem? The system is still up with all those
> process hanging in D-state.
>

if you can login to the system get the dmesg output after

echo t > /proc/sysrq-trigger


-aneesh
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