From: Christoph Hellwig <hch@infradead.org>
To: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
Cc: Christoph Hellwig <hch@infradead.org>,
"xfs-masters@oss.sgi.com" <xfs-masters@oss.sgi.com>,
"xfs@oss.sgi.com" <xfs@oss.sgi.com>,
aelder@sgi.com
Subject: Re: xfs deadlock in stable kernel 3.0.4
Date: Tue, 20 Sep 2011 12:02:26 -0400 [thread overview]
Message-ID: <20110920160226.GA25542@infradead.org> (raw)
In-Reply-To: <4E78665E.8030409@profihost.ag>
On Tue, Sep 20, 2011 at 12:09:34PM +0200, Stefan Priebe - Profihost AG wrote:
> Hi,
>
> any idea how to get deeper into this? I've tried using kgdb but
> strangely the error does not occur when kgdb is remote attached.
> When i unattach kgdb and restart bonnie the error happens again.
>
> So it seems to me a little bit like a timing issue?
Sounds like it.
Can you summarize all the data that we gather over this thread into one
summary, e.g.
- what kernel does it happens? Seems like 3.0 and 3.1 hit it easily,
2.6.38 some times, 2.6.32 is fine. Did you test anything between
2.6.32 and 2.6.38?
- what hardware hits it often/sometimes/never?
- what is the fs geometry?
- what is the hardware?
- is this a 32 or 64-bit kernel, or do you run both?
I'm pretty sure most got posted somewhere, but let's get a summary
as things was a bit confusing sometimes.
Note that 2.6.38 moved the whole log grant code to a lockless algorithm,
so this might be a likely culprit if you're managing to hit race windows
no one else does, i.e. this really is a timing issue.
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next prev parent reply other threads:[~2011-09-20 16:02 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-10 12:23 xfs deadlock in stable kernel 3.0.4 Stefan Priebe
2011-09-12 15:21 ` Christoph Hellwig
2011-09-12 16:46 ` Stefan Priebe
2011-09-12 20:05 ` Christoph Hellwig
2011-09-13 6:04 ` Stefan Priebe - Profihost AG
2011-09-13 19:31 ` Stefan Priebe - Profihost AG
2011-09-13 20:50 ` Christoph Hellwig
2011-09-13 21:52 ` [xfs-masters] " Alex Elder
2011-09-13 21:58 ` Alex Elder
2011-09-13 22:26 ` Christoph Hellwig
2011-09-14 7:26 ` Stefan Priebe - Profihost AG
2011-09-14 7:48 ` Stefan Priebe - Profihost AG
2011-09-14 8:49 ` Stefan Priebe - Profihost AG
2011-09-14 14:30 ` Christoph Hellwig
2011-09-14 14:30 ` Christoph Hellwig
2011-09-14 16:06 ` Stefan Priebe - Profihost AG
2011-09-18 9:14 ` Stefan Priebe - Profihost AG
2011-09-18 20:04 ` Christoph Hellwig
2011-09-19 10:54 ` Stefan Priebe - Profihost AG
2011-09-18 23:02 ` Dave Chinner
2011-09-20 0:47 ` Stefan Priebe
2011-09-20 1:01 ` Stefan Priebe
2011-09-20 10:09 ` Stefan Priebe - Profihost AG
2011-09-20 16:02 ` Christoph Hellwig [this message]
2011-09-20 17:23 ` Stefan Priebe - Profihost AG
2011-09-20 17:24 ` Christoph Hellwig
2011-09-20 17:35 ` Stefan Priebe - Profihost AG
2011-09-20 22:30 ` Christoph Hellwig
2011-09-21 2:11 ` [xfs-masters] " Dave Chinner
2011-09-21 7:40 ` Stefan Priebe - Profihost AG
2011-09-21 11:42 ` Dave Chinner
2011-09-21 11:55 ` Stefan Priebe - Profihost AG
2011-09-21 12:26 ` Christoph Hellwig
2011-09-21 13:42 ` Stefan Priebe
2011-09-21 16:48 ` Stefan Priebe - Profihost AG
2011-09-21 17:26 ` Stefan Priebe - Profihost AG
2011-09-21 19:01 ` Stefan Priebe - Profihost AG
2011-09-21 23:07 ` Dave Chinner
2011-09-22 14:14 ` Christoph Hellwig
2011-09-22 21:49 ` Dave Chinner
2011-09-22 22:01 ` Christoph Hellwig
2011-09-23 5:28 ` Stefan Priebe - Profihost AG
2011-09-22 0:53 ` Dave Chinner
2011-09-22 5:27 ` Stefan Priebe - Profihost AG
2011-09-22 7:52 ` Stefan Priebe - Profihost AG
2011-09-21 7:36 ` Stefan Priebe - Profihost AG
2011-09-21 11:39 ` Christoph Hellwig
2011-09-21 13:39 ` Stefan Priebe
2011-09-21 14:17 ` Christoph Hellwig
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