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From: Zdenek Kabelac <zkabelac@redhat.com>
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Date: Tue, 29 Nov 2016 16:59:12 +0100
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Subject: Re: [linux-lvm] deadlock during lvm snapshot target
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Dne 29.11.2016 v 11:28 Tomaz Beltram napsal(a):
> On 29. 11. 2016 09:38, Zdenek Kabelac wrote:
>>
>> Please switch to newer version of lvm2.
>>
>> Sequence with snapshot activation had been reworked to minimize possibility
>> to hit this kernel race - race is still there even with the latest kernel, but in the real world you should not have a much chance to hit it.
> Thanks for the explanation. I reported this to Ubuntu launchpad. Please add
> your votes.
>
> https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/1645636
>


Yep just a minor comment - it's not 'fixed' - but the chance to hit the race 
have been considerably decreased - but we still have an example where it could 
be demonstrated (and it's not just 'dm' - it's more generic - see Mikulas's post)

Regards

Zdenek