[dm-devel] hunt for 2.6.37 dm-crypt+ext4 corruption? (was: Re: dm-crypt barrier support is effective)

[Jon Nelson]

On Thu, Dec 9, 2010 at 8:00 PM, Chris Mason <chris.mason at oracle.com> wrote:
> Excerpts from Mike Fedyk's message of 2010-12-09 20:58:40 -0500:
>> On Thu, Dec 9, 2010 at 5:38 PM, Chris Mason <chris.mason at oracle.com> wrote:
>> > Excerpts from Andi Kleen's message of 2010-12-09 18:16:16 -0500:
>> >> > 512MB.
>> >> >
>> >> > 'free' reports 75MB, 419MB free.
>> >> >
>> >> > I originally noticed the problem on really real hardware (thinkpad
>> >> > T61p), however.
>> >>
>> >> If you can easily reproduce it could you try a git bisect?
>> >
>> > Do we have a known good kernel?  I looked back through the thread and
>> > didn't see any reports where the postgres test on ext4 passed in this
>> > config.
>> >
>>
>> 2.6.34.something.  -- Any chance a newer kernel can be tested to be found good?
>
> But he is triggering the ext4 corruption without dm-crypt.  I think
> dm-crypt was still used somewhere on the system during the test, just
> not on the partitions that actually hit the corruption.

I now have my doubts about being able to trigger it without dm-crypt.
I stand by my report, but I'm also unable to reproduce it after after
50 test iterations. I did run 2.6.36 for a few weeks without any issue
that I recall.



-- 
Jon