On 06/07/2023 07:42, Boris Burkov wrote:
To facilitate skipping tests depending on the qgroup mode after mkfs,
add support for figuring out the mode. This cannot just rely on the new
sysfs file, since it might not be present on older kernels.
Signed-off-by: Boris Burkov <boris@xxxxxx>
---
common/btrfs | 43 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/common/btrfs b/common/btrfs
index 175b33aee..66c065a10 100644
--- a/common/btrfs
+++ b/common/btrfs
@@ -680,3 +680,46 @@ _require_btrfs_scratch_logical_resolve_v2()
fi
_scratch_unmount
}
+
+_qgroup_mode_file()
+{
+ local mnt=$1
+
+ uuid=$(findmnt -n -o UUID $mnt)
+ echo /sys/fs/btrfs/${uuid}/qgroups/mode
+}
+
+_qgroup_enabled_file()
+{
+ local mnt=$1
+
+ uuid=$(findmnt -n -o UUID $mnt)
+ echo /sys/fs/btrfs/${uuid}/qgroups/enabled
+}
+
+_qgroup_mode()
+{
+ local mnt=$1
+
+ if [ ! -f "$(_qgroup_enabled_file $mnt)" ]; then
+ echo "disabled"
+ return
+ fi
+
+ if [ -f "$(_qgroup_mode_file $mnt)" ]; then
+ cat $(_qgroup_mode_file $mnt)
+ elif [ $(cat $(_qgroup_enabled_file $mnt)) -eq "1" ]; then
/> + echo "qgroup"
+ else
+ echo "disabled" # should not be reachable, the enabled file won't exist.
+ fi
+}
+
+_require_scratch_qgroup()
+{
+ _scratch_mkfs >>$seqres.full 2>&1
+ _scratch_mount
+ _run_btrfs_util_prog quota enable $SCRATCH_MNT
+ _check_regular_qgroup $SCRATCH_MNT || _notrun "not running normal qgroups"
+ _scratch_unmount
+}
Can you add _has_scratch_fs_sysfs() helper for scratch? See for example
_has_fs_sysfs().
So that you can do something like..
if [ _has_scratch_fs_sysfs qgroups/mode ]; then
if [ $(_get_fs_sysfs_attr $mnt qgroups/mode) == 1 ]; then
echo qgroup
else
echo something
else
_notrun "qgroup unsupported"
fi
Thanks, Anand
