btrfs/210: Ignore output from "quota rescan" after "quota enable"

Command "quota enable" triggers a quota rescan, but it can finish
quick in some machines leading to the next command "quota rescan" to
be able to start scanning again, and then printing "quota rescan
started" making the test fail.

In some machines this don't happen because the first rescan
initiated by "quota enable" is still running when "quota rescan" is
executed, returning -EINPROGRESS from ioctl
BTRFS_IOC_QUOTA_RESCAN_STATUS and not printing the message.

Ignoring any output from "quota rescan" solves the issue in both
cases, and this is already being done by others tests as well.

Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

diff --git a/tests/btrfs/210 b/tests/btrfs/210
index daa76a877df005965dd9b32597f2d2e9ead58481..13d1a87bb84b19a9abdf777cdf1f0ed28de5cd30 100755 (executable)
--- a/tests/btrfs/210
+++ b/tests/btrfs/210
@@ -46,7 +46,7 @@ _pwrite_byte 0xcd 0 16M "$SCRATCH_MNT/src/file" > /dev/null
 # by qgroup
 sync
 $BTRFS_UTIL_PROG quota enable "$SCRATCH_MNT"
-$BTRFS_UTIL_PROG quota rescan -w "$SCRATCH_MNT"
+$BTRFS_UTIL_PROG quota rescan -w "$SCRATCH_MNT" > /dev/null
 $BTRFS_UTIL_PROG qgroup create 1/0 "$SCRATCH_MNT"
 
 # Create a snapshot with qgroup inherit