From: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
To: Christoph Hellwig <hch@infradead.org>
Cc: "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 19:23:00 +0200 [thread overview]
Message-ID: <4E78CBF4.1030505@profihost.ag> (raw)
In-Reply-To: <20110920160226.GA25542@infradead.org>
> Can you summarize all the data that we gather over this thread into one
> summary, e.g.
Yes - hope it helps.
> - 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?
Hits very easily: 3.0.4 and 3.1-rc5
Very rare: 2.6.38 - as it happened only some times i cannot 100%
guarantee that it is really the same issue
No issues at all: 2.6.32
I've not tested anything between 2.6.32 as i cannot reproduce it under
2.6.38 at all - seen once a week of 500.
> - what hardware hits it often/sometimes/never?
I've seen this only on multi core CPUs with > 2.8Ghz and fast SAS Raid
10 or SSD. I cannot say if it's the CPU or the fast disks - as our low
cost systems have only small CPUs and the high end ones have big cpus
with fast disks.
> - what is the fs geometry?
What do you exactly mean? I've seen this on 1TB and 160GB SSD devices
with totally different disk layout.
> - what is the hardware?
see above
> - is this a 32 or 64-bit kernel, or do you run both?
always 64bit
> I'm pretty sure most got posted somewhere, but let's get a summary
> as things was a bit confusing sometimes.
no problem
> 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.
I'm nearly willing todo anything to solve this. What can i do to help.
My last hope from today was to get some code lines with kgdb - sadly it
does not happen at all when kgdb is attached ;-(
Stefan
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next prev parent reply other threads:[~2011-09-20 17:23 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
2011-09-20 17:23 ` Stefan Priebe - Profihost AG [this message]
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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