Re: BTRFS hang with 3.16-rc5

[Chris Mason <clm@fb.com>]

On 07/14/2014 05:58 PM, Martin Steigerwald wrote:
> Am Montag, 14. Juli 2014, 16:12:22 schrieb Chris Mason:
>> On 07/14/2014 11:10 AM, Martin Steigerwald wrote:
>>> Am Montag, 14. Juli 2014, 17:04:22 schrieben Sie:
>>>> Hi!
>>>>
>>>> While with 3.16-rc3 and rc4 I didn´t have a BTRFS hang in several days of
>>>> usage, with 3-16-rc5 I had a hang again. Less than a hour since booting
>>>> it.
>>>>
>>>> Since the hang bug I and others had with 3.15 and upto 3.16-rc2 usually
>>>> didn´t happen that quickly after boot and since backtrace looks a bit
>>>> different from what I have in memory, I post this in a new thread.
>>>> See thread "Blocked tasks on 3.15.1" for a discussion of previous hang
>>>> issues.
>>>
>>> Probably good to add some basic information on the filesystem:
>> Do you have compression enabled?  I wasn't able to nail down the 3.15.1
>> hang before vacation attacked me, but I'm hoping to track it down today.
> 
> Yes. I have.
> 
> It just hung again while I was playing PlaneShift.
> 
> Back to 3.16-rc4 as rc5 seems to be broke here.

The btrfs hang you're hitting goes back to 3.15.  So 3.16-rc4 vs rc5
shouldn't be a factor.  Are you hitting other problems with 3.16?

-chris