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Date: Wed, 16 Mar 2016 14:01:09 +0500
From: Roman Mamedov <rm@romanrm.net>
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Cc: Liu Bo <bo.li.liu@oracle.com>, Chris Murphy <lists@colorremedies.com>,
        Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: task btrfs-cleaner:770 blocked for more than 120 seconds.
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On Tue, 15 Mar 2016 09:18:14 +0500
=D0=9C=D0=B8=D1=85=D0=B0=D0=B8=D0=BB =D0=93=D0=B0=D0=B2=D1=80=D0=B8=D0=BB=
=D0=BE=D0=B2 <mikhail.v.gavrilov@gmail.com> wrote:

> Yesterday btrfs again hangs on kernel 4.4.5
> It's the same or another problem?

Seems different to me, as there's also defrag involved. Try removing and not
using the defrag mount option.

> This messages say that restore failed?

So you can't mount the FS anymore? Did you try btrfsck, what does it report?

--=20
With respect,
Roman

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