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Date: Mon, 26 May 2014 23:02:18 +0600
From: Roman Mamedov <rm@romanrm.net>
To: linux-btrfs@vger.kernel.org
Cc: David Bloquel <david.bloquel@jimywoo.fr>
Subject: Re: Btrfs filesystem freezing during snapshots
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On Mon, 26 May 2014 22:39:16 +0600
Roman Mamedov <rm@romanrm.net> wrote:

> On Mon, 26 May 2014 14:28:51 +0200
> David Bloquel <david.bloquel@jimywoo.fr> wrote:
>=20
> > [69537.117439]       Not tainted 3.12-0.bpo.1-amd64 #1
>=20
> Try upgrading to the kernel 3.14. From what I can tell it has significant
> improvements/bugfixes in the snapshot deletion area. Just a couple of day=
s ago
> I got a recurring lock-up after deleting 50 snapshots with tens of thousa=
nds of
> fragments of files in each (VM images, like in your case). Googled around=
 a
> little bit, and found a similar issue with a report that 3.14 solves the
> problem. Upgraded to 3.14.4 (from 3.12.20), and voila, indeed it does.

Oh, I missed that your freezing happens during snapshot creation, not
deletion. But anyways, I think checking if the problem persists on the newe=
st
kernel is still a good idea.

--=20
With respect,
Roman

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