From: Andrei Borzenkov <arvidjaar@gmail.com>
To: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Non-existent qgroup in parent-child relation prevents makes qgroup commands fail
Date: Fri, 2 Aug 2019 21:08:08 +0300 [thread overview]
Message-ID: <665ad51a-def8-b60a-8ea2-b76e46f306d2@gmail.com> (raw)
bor@tw:~> sudo btrfs qgroup show .
ERROR: cannot find the qgroup 0/789
bor@tw:~>
Fine. This openSUSE with snapper which creates and automatically
destroys snapshots and apparently either kernel or snapper now also
remove corresponding qgroup. I played with snapshots and created several
top level qgroups that included snapshot qgroups existing at this time.
Now these snapshots are gone, their qgroups are gone ... and what can I
do? I have no way to even know what is wrong because the very command
that shows it fails immediately.
bor@tw:~/python-btrfs/examples> sudo ./show_tree_keys.py 8 . | grep 0/789
(0/789 QGROUP_RELATION 2/792)
(0/789 QGROUP_RELATION 2/793)
(0/789 QGROUP_RELATION 2/795)
(0/789 QGROUP_RELATION 2/799)
(0/789 QGROUP_RELATION 2/800)
(0/789 QGROUP_RELATION 2/803)
(0/789 QGROUP_RELATION 2/804)
(0/789 QGROUP_RELATION 2/805)
(0/789 QGROUP_RELATION 2/806)
(0/789 QGROUP_RELATION 2/807)
(0/789 QGROUP_RELATION 2/808)
(0/789 QGROUP_RELATION 2/809)
(0/789 QGROUP_RELATION 2/814)
(0/789 QGROUP_RELATION 2/818)
(0/789 QGROUP_RELATION 2/819)
(2/792 QGROUP_RELATION 0/789)
(2/793 QGROUP_RELATION 0/789)
(2/795 QGROUP_RELATION 0/789)
(2/799 QGROUP_RELATION 0/789)
(2/800 QGROUP_RELATION 0/789)
(2/803 QGROUP_RELATION 0/789)
(2/804 QGROUP_RELATION 0/789)
(2/805 QGROUP_RELATION 0/789)
(2/806 QGROUP_RELATION 0/789)
(2/807 QGROUP_RELATION 0/789)
(2/808 QGROUP_RELATION 0/789)
(2/809 QGROUP_RELATION 0/789)
(2/814 QGROUP_RELATION 0/789)
(2/818 QGROUP_RELATION 0/789)
(2/819 QGROUP_RELATION 0/789)
bor@tw:~/python-btrfs/examples>
And even if I find it out, I cannot fix it anyway
bor@tw:~/python-btrfs/examples> sudo btrfs qgroup remove 0/789 2/792 .
ERROR: unable to assign quota group: Invalid argument
bor@tw:~/python-btrfs/examples>
I can remove parent qgroup, but it does not clean up parent-child
relationship
bor@tw:~/python-btrfs/examples> sudo btrfs qgroup destroy 2/792 .
bor@tw:~/python-btrfs/examples> sudo ./show_tree_keys.py 8 . | grep 2/792
(0/789 QGROUP_RELATION 2/792)
(2/792 QGROUP_RELATION 0/789)
bor@tw:~/python-btrfs/examples>
next reply other threads:[~2019-08-02 18:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-02 18:08 Andrei Borzenkov [this message]
2019-08-02 23:09 ` Non-existent qgroup in parent-child relation prevents makes qgroup commands fail Qu Wenruo
2019-08-03 5:31 ` Andrei Borzenkov
2019-08-03 6:17 ` Qu Wenruo
2019-08-03 6:49 ` Andrei Borzenkov
2019-08-03 7:03 ` Qu Wenruo
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