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Re: [dm-devel] 2.6.35 causes deadlock when snapshotting root lv



Phillip Susi wrote:
> On 06/17/2010 12:27 PM, Mike Snitzer wrote:
>>>> http://git.kernel.org/linus/18e9e5104fcd9a9
>>>> http://git.kernel.org/linus/6b0310fbf087ad6
>>>
>>> Yes, these do look suspicious.  I'll test reverting them tonight.
>>
>> OK, I'd suggest reverting the VFS change (18e9e5104fcd9a9) first.
> 
> Turns out it was 6b0310fbf087ad6 that did it.  CCing Eric Sandeen since
> he wrote it.  Eric, this patch seems to cause a deadlock when taking an
> lvm snapshot of the root lv.  Any idea why?

I'll look.  A sysrq-w when it hangs up would probably be enlightening...

-Eric


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