xfs deadlock in stable kernel 3.0.4

[Stefan Priebe - Profihost AG]

Am 21.09.2011 00:30, schrieb Christoph Hellwig:
> On Tue, Sep 20, 2011 at 07:35:57PM +0200, Stefan Priebe - Profihost AG wrote:
>> 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
>
> Nothing special there.
>
> So far I haven't been able to recreate it.  How many runs did you
> normally need on 3.1-rc?  Note that so far I've run my known working
> kernel, I'll test your config plus the drivers I need next.

I had only used 3.0.4 with bonnie++ to reproduce. 3.1-rc was running on 
a prod. system.

Sadly i'm also not able to reproduce it reliable on every partition. 
Sometimes it works sometimes not. Just retrying does not help. I had to 
copy and delete random files from the part. and then start bonnie++ on 
it. Perhaps i can give you a dd dump of the partition. But i had to 
recreate one. My Intel SSD is now massivly slower than when i started 
the tests. No idea why.

Stefan