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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, 20 Sep 2011 19:35:57 +0200
Cc: Dave Chinner <david@xxxxxxxxxxxxx>, "xfs-masters@xxxxxxxxxxx" <xfs-masters@xxxxxxxxxxx>, aelder@xxxxxxx, "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
In-reply-to: <20110920172455.GA30757@xxxxxxxxxxxxx>
References: <4E6EF274.7050007@xxxxxxxxxxxx> <20110913205018.GA8543@xxxxxxxxxxxxx> <4E70571A.80108@xxxxxxxxxxxx> <4E705C42.6020909@xxxxxxxxxxxx> <20110914143005.GA28496@xxxxxxxxxxxxx> <4E75B660.1030502@xxxxxxxxxxxx> <20110918230245.GF15688@dastard> <4E78665E.8030409@xxxxxxxxxxxx> <20110920160226.GA25542@xxxxxxxxxxxxx> <4E78CBF4.1030505@xxxxxxxxxxxx> <20110920172455.GA30757@xxxxxxxxxxxxx>
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Am 20.09.2011 19:24, schrieb Christoph Hellwig:
On Tue, Sep 20, 2011 at 07:23:00PM +0200, Stefan Priebe - Profihost AG wrote:
  - 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.

The output of mkfs.xfs (of xfs_info after it's been created)

ssd:~# xfs_info /dev/sda3
meta-data=/dev/root              isize=256    agcount=4, agsize=9517888 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=38071552, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal               bsize=4096   blocks=18589, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0


I'll run tests on a system with a pci-e flash device today.  Just to
make sure we are on the same page, can you give me your kernel .config
in addition to the mkfs output above?

OK i hope you can reproduce it as well.

.config
http://pastebin.com/raw.php?i=m8AAFJ1B

I also found out that i was not able to reproduce it under a freshly new created xfs part. I needed to copy a bunch of files delete some create some new and then start the test. I just duplicated multiple times the root filesystem and then deleted some, created some hardlinks whatever...

Stefan

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