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Date: Wed, 28 May 2014 09:41:40 -0400
From: Chris Mason <clm@fb.com>
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Subject: Re: 3.15-rc6 - btrfs-transacti:4157 blocked for more than 120 seconds.
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On 05/28/2014 01:53 AM, Torbjørn wrote:

> It's actually a raid10 array of 11 dm-crypt devices.
> I'm able to read data from the array (accessing files), and also read
> directly from all the underlying dm-crypt devices using dd, if that's
> what you meant.
> 
> I have not rebooted the system since that dmesg, so it's still stuck in
> the same state.
> I can keep it like that for some days. The system is not critical at all.
> 

Thanks,

Can you please capture the result of sysrq-t and sysrq-l?  Maybe the IO
is stuck in a thread that isn't in the D state.

-chris