Tsutomu Itoh wrote on 2015/06/23 08:55 +0900:
On 2015/06/23 3:18, Christian Robottom Reis wrote:
On Mon, Jun 22, 2015 at 05:00:23PM +0200, David Sterba wrote:
- qgroup:
- show: distinguish no limits and 0 limit value
- limit: ability to clear the limit
I'm using kernel 4.1-rc7 as per:
root@riff:/var/lib/lxc/juju-trusty-lxc-template/rootfs# uname -a
Linux riff 4.1.0-040100rc7-generic #201506080035 SMP Mon Jun 8
04:36:20 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
But apart from still having major issues with qgroups (quota enforcement
triggers even when there seems to be plenty of free space) clearing
limits with btrfs-progs 4.1 doesn't revert back to 'none', instead
confusingly setting the quota to 16EiB. Using:
root@riff:/var/lib/lxc/juju-trusty-lxc-template/rootfs# btrfs
version
btrfs-progs v4.1
I start from:
qgroupid rfer excl max_rfer max_excl
-------- ---- ---- -------- --------
0/5 2.15GiB 1.95GiB none none
0/261 1.42GiB 1.11GiB none 100.00GiB
0/265 1.09GiB 600.59MiB none 100.00GiB
0/271 793.32MiB 366.40MiB none 100.00GiB
0/274 514.96MiB 142.92MiB none 100.00GiB
I then issue:
root@riff# btrfs qgroup limit -e none 261 /var
root@riff# btrfs qgroup limit none 261 /var
I end up with:
qgroupid rfer excl max_rfer max_excl
-------- ---- ---- -------- --------
0/5 2.15GiB 1.95GiB none none
0/261 1.42GiB 1.11GiB 16.00EiB 16.00EiB
0/265 1.09GiB 600.59MiB none 100.00GiB
0/271 793.32MiB 366.40MiB none 100.00GiB
0/274 514.96MiB 142.92MiB none 100.00GiB
Is that expected?
The following fix is necessary for the kernel to display it correctly.
[PATCH] btrfs: qgroup: allow user to clear the limitation on qgroup
http://marc.info/?l=linux-btrfs&m=143331495409594&w=2
Thanks,
Tsutomu
I'll send a new pull request containing this patch when we done the full
test.
The pull will be mainly consisted of small cleanup and bug fixes, so it
should be quite safe, but I still want to make sure it's completely safe
anyway.
Thanks,
Qu
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