From: Tomasz Chmielewski <tch@virtall.com>
To: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: btrfs qgroup destroy -> ERROR: unable to create quota group: Device or resource busy
Date: Fri, 9 Aug 2013 13:39:33 +0800 [thread overview]
Message-ID: <20130809133933.2fbfc6e4@virtall.com> (raw)
I'm using qgroups and have created a few hundreds of subvolumes in the
past.
It seems that btrfs automatically assigns a qgroup to newly created
snapshot/subvolume, but does not destroy the qgroup when the subvolume
is deleted.
So I've tried to destroy the unused qgroups, with mixed success. I was
able to destroy most of them, but some are still failing, i.e.:
# btrfs qgroup destroy 4494 /mnt/lxc1
ERROR: unable to create quota group: Device or resource busy
Note the negative number here, but I also have qgroups with both
positive numbers, which I'm not able to destroy as well:
# btrfs qgroup show /mnt/lxc1 | grep 4494
0/4494 839516160 -69632
qgroup 4494 is not used by any subvolume:
# btrfs sub list /mnt/lxc1 | grep 4494
I did run "btrfs quota rescan" for this filesystem, hoping it will fix
the problem, but it didn't.
Any advice?
--
Tomasz Chmielewski
http://wpkg.org
next reply other threads:[~2013-08-09 5:39 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-09 5:39 Tomasz Chmielewski [this message]
2013-08-09 5:56 ` btrfs qgroup destroy -> ERROR: unable to create quota group: Device or resource busy Wang Shilong
2013-08-09 6:07 ` Tomasz Chmielewski
2013-08-09 6:08 ` Wang Shilong
2013-08-09 6:42 ` Tomasz Chmielewski
2013-08-09 6:56 ` Wang Shilong
2013-08-09 7:47 ` Tomasz Chmielewski
2013-08-09 12:47 ` Wang Shilong
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