Re: next-20090206: deadlock on ext4

[Alexander Beregalov]

2009/2/6 Eric Sandeen <sandeen@xxxxxxxxxx>:
> Alexander Beregalov wrote:
>> Hi
>>
>> I run dbench on ext4 on loop device.
>>
>> EXT4-fs: barriers enabled
>> kjournald2 starting: pid 2420, dev loop0:8, commit interval 5 seconds
>> EXT4 FS on loop0, internal journal on loop0:8
>> EXT4-fs: delayed allocation enabled
>> EXT4-fs: file extents enabled
>> EXT4-fs: mballoc enabled
>> EXT4-fs: mounted filesystem loop0 with ordered data mode
>> JBD: barrier-based sync failed on loop0:8 - disabling barriers
>>
>> INFO: task pdflush:2339 blocked for more than 120 seconds.
>
> Looks a lot like a bug I filed:
>
> http://bugzilla.kernel.org/show_bug.cgi?id=12579
>
> but I'm having trouble reproducing it, now.  I'll try dbench!
Yes, I can reproduce it easy with dbench.
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