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Re: xfs deadlock in stable kernel 3.0.4

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: xfs deadlock in stable kernel 3.0.4
From: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>
Date: Tue, 13 Sep 2011 21:31:13 +0200
Cc: "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>, "xfs-masters@xxxxxxxxxxx" <xfs-masters@xxxxxxxxxxx>
In-reply-to: <4E6EF274.7050007@xxxxxxxxxxxx>
References: <1D2B34A7-7BB9-4E4E-9CA2-382C210E125F@xxxxxxxxxxxx> <20110912152133.GA8345@xxxxxxxxxxxxx> <C6515E45-5724-43DD-95A8-1F89AFE29601@xxxxxxxxxxxx> <20110912200543.GA22409@xxxxxxxxxxxxx> <4E6EF274.7050007@xxxxxxxxxxxx>
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Am 13.09.2011 08:04, schrieb Stefan Priebe - Profihost AG:

On Mon, Sep 12, 2011 at 06:46:26PM +0200, Stefan Priebe wrote:
What kind of workload are you running? Also did the workload run fine
with an older kernel, and if yes which one?

Mysql, Web, Mail, ftp ;-) yes it was with 2.6.32. I upgraded from
that version.

Just curious, is this the same system that also shows the freezes
reported to the scsi list? If I/Os don't get completed by lower layers
I can see how we get everything in XFS waiting on the log reservations,
given that we never get the log tail pushed.

I just reported it to the scsi list as i didn't knew where the problems
is. But then some people told be it must be a XFS problem.

Some more informations:
1.) It's running with 2.6.32 and 2.6.38
2.) I can also write to another ext2 part on the same disk array(aacraid
driver) while xfs stucks - so i think it must be an xfs problem
3.) I've also tried running 3.1-rc5 but then i'm seeing this error:

> ...

Any idea what we could try next or how to find the problem? At least this is happening with different devices and writing to other partitions is still working.


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