Hi all,
I am cooking a V2 for this patchset, it will make user to limit
data, metadata or mixed of a qgroup.
Even, you can limit all of the three quota number at one time. I believe
it's much better.
Thanx.
On 02/10/2015 06:24 PM, Dongsheng Yang wrote:
Hi all,
This patchset is based on [Btrfs: qgroup: part-3: bug fixes.]
I am introducing a type to qgroup, then we can get the numbers what we
only care about.
Easy way to get the code for testing:
btrfs: https://yangdongsh...@github.com/yangdongsheng/linux.git
qgroup_type
btrfs-progs: https://yangdongsh...@github.com/yangdongsheng/btrfs-progs.git
qgroup_type
with the patches applied in this series, both in btrfs and btrfs-progs:
[root@atest-guest linux_btrfs]# mkfs.btrfs -O qgroup-type /dev/sdc -f
Btrfs v3.18-76-ga900a61
See http://btrfs.wiki.kernel.org for more information.
Turning ON incompat feature 'extref': increased hardlink limit per file to 65536
Turning ON incompat feature 'skinny-metadata': reduced-size metadata extent refs
Turning ON incompat feature 'qgroup-type': create qgroup in different type
fs created label (null) on /dev/sdc
nodesize 16384 leafsize 16384 sectorsize 4096 size 10.00GiB
[root@atest-guest linux_btrfs]# mount /dev/sdc /mnt/
[root@atest-guest linux_btrfs]# btrfs quota enable /mnt
[root@atest-guest linux_btrfs]# btrfs qgroup show -prce /mnt
qgroupid rfer excl max_rfer max_excl parent child type
-------- ---- ---- -------- -------- ------ ----- ----
0/5 16.00KiB 16.00KiB 0.00B 0.00B --- ---
metadata,data
[root@atest-guest linux_btrfs]# btrfs qgroup show -prce /mnt
qgroupid rfer excl max_rfer max_excl parent child type
-------- ---- ---- -------- -------- ------ ----- ----
0/5 16.00KiB 16.00KiB 0.00B 0.00B --- ---
metadata,data
0/257 16.00KiB 16.00KiB 0.00B 0.00B --- ---
metadata,data <--- default type is mixed.
[root@atest-guest linux_btrfs]# btrfs sub create --qgroup-type data /mnt/sub1
Create subvolume '/mnt/sub1'
Set qgroup arguments:
qgroup type: data
[root@atest-guest linux_btrfs]# btrfs qgroup show -prce /mnt
qgroupid rfer excl max_rfer max_excl parent child type
-------- ---- ---- -------- -------- ------ ----- ----
0/5 16.00KiB 16.00KiB 0.00B 0.00B --- ---
metadata,data
0/257 16.00KiB 16.00KiB 0.00B 0.00B --- ---
metadata,data
0/258 0.00B 0.00B 0.00B 0.00B --- --- data
<--- create a data qgroup
[root@atest-guest linux_btrfs]# btrfs qgroup limit -e 5M 0/258 /mnt
[root@atest-guest linux_btrfs]# btrfs qgroup show -prce /mnt
qgroupid rfer excl max_rfer max_excl parent child type
-------- ---- ---- -------- -------- ------ ----- ----
0/5 16.00KiB 16.00KiB 0.00B 0.00B --- ---
metadata,data
0/257 16.00KiB 16.00KiB 0.00B 0.00B --- ---
metadata,data
0/258 0.00B 0.00B 0.00B 5.00MiB --- --- data
[root@atest-guest linux_btrfs]# dd if=/dev/zero of=/mnt/sub1/data bs=1024
dd: error writing \u2018/mnt/sub1/data\u2019: Disk quota exceeded
5121+0 records in
5120+0 records out
5242880 bytes (5.2 MB) copied, 0.0218646 s, 240 MB/s
[root@atest-guest linux_btrfs]# sync
[root@atest-guest linux_btrfs]# ll /mnt/sub1/data
-rw-r--r--. 1 root root 5242880 Feb 10 16:17 /mnt/sub1/data
[root@atest-guest linux_btrfs]# btrfs qgroup show -prce --raw /mnt
qgroupid rfer excl max_rfer max_excl parent child type
-------- ---- ---- -------- -------- ------ ----- ----
0/5 16384 16384 0 0 --- ---
metadata,data
0/257 16384 16384 0 0 --- ---
metadata,data
0/258 5242880 5242880 0 5242880 --- --- data
<--- excl == max_excl == data_size == 5M == 5242880
Dongsheng Yang (7):
Btrfs: qgroup: Add type to btrfs_qgroup.
btrfs: qgroup: apply type to the recording and accounting.
btrfs: qgroup: Apply type to btrfs_qgroup_inherit().
btrfs: qgroup: Apply qgroup type to qgroup creating.
btrfs: qgroup: Apply qgroup type to subvol creating.
btrfs: qgroup: apply type to quota rescan.
btrfs: qgroup: fix a bug when type of parent is different with
child's.
fs/btrfs/ctree.h | 10 ++-
fs/btrfs/extent-tree.c | 48 ++++++-----
fs/btrfs/ioctl.c | 49 ++++++++---
fs/btrfs/qgroup.c | 186 ++++++++++++++++++++++++++++--------------
fs/btrfs/qgroup.h | 29 ++++++-
fs/btrfs/tests/qgroup-tests.c | 19 +++--
fs/btrfs/transaction.c | 13 +--
include/uapi/linux/btrfs.h | 1 +
8 files changed, 246 insertions(+), 109 deletions(-)
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