From: Hugo Mills <hugo@carfax.org.uk>
To: Wolfgang Rohdewald <wolfgang.kde@rohdewald.de>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: btrfs scrub can neither start nor cancel
Date: Tue, 8 Dec 2015 20:51:08 +0000 [thread overview]
Message-ID: <20151208205108.GD2376@carfax.org.uk> (raw)
In-Reply-To: <31519331.YQjdnfjTR6@i5>
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On Tue, Dec 08, 2015 at 09:46:48PM +0100, Wolfgang Rohdewald wrote:
> I just tried this script:
> http://marc.merlins.org/perso/btrfs/2014-03.html#Btrfs-Tips_-Btrfs-Scrub-and-Btrfs-Filesystem-Repair
>
> but I did not pass the directory where the filesystem is mounted.
>
> Next I called it correctly: btrfs-scrub /t4
> I also tried btrfs scrub start / cancel directly, but
> I am not really sure what I did in which order.
>
> Anyway now I can neither cancel nor start btrfs scrub. Rebooting did not help.
It might be that the userspace tools has got confused and left
behind a lock/pid/progress file in /var/lib/btrfs/
Take a look in there and see if there's anything that you can
delete to good effect?
Hugo.
> Running unmodified Linux 4.3
>
> It seems like scrub stopped and did not clean up. Maybe because:
> Dec 8 21:07:41 s5 kernel: [17833.840868] btrfs[23746]: segfault at ffffffffffffff98 ip 00000000004079e1 sp 00007fffafa27510 error 5 in btrfs[400000+53000]
>
> How can I now clean this up?
>
> root@s5:~# btrfs --version
> Btrfs v3.12
>
> root@s5:~# btrfs scrub status /t4
> scrub status for 700900de-e35f-4264-8f5d-1b2b249a5c3a
> scrub started at Tue Dec 8 21:05:31 2015, running for 20 seconds
> total bytes scrubbed: 3.09GiB with 0 errors
>
> root@s5:~# btrfs scrub cancel /t4
> ERROR: scrub cancel failed on /t4: not running
>
> root@s5:~# btrfs scrub start /t4
> ERROR: scrub is already running.
> To cancel use 'btrfs scrub cancel /t4'.
> To see the status use 'btrfs scrub status [-d] /t4'.
>
>
--
Hugo Mills | Go not to the elves for counsel, for they will say
hugo@... carfax.org.uk | both no and yes.
http://carfax.org.uk/ |
PGP: E2AB1DE4 |
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next prev parent reply other threads:[~2015-12-08 20:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-08 20:46 btrfs scrub can neither start nor cancel Wolfgang Rohdewald
2015-12-08 20:51 ` Hugo Mills [this message]
2015-12-08 22:52 ` Wolfgang Rohdewald
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