btrfs/176: redirect _format_swapfile to null

Since bb0ab7b2 ("common/rc: Enable _format_swapfile to return the swap
size") we started echo'ing out the swap file size, which is polluting
the golden output for btrfs/176 causing it to fail.  Fix this by
redirecting the output to /dev/null.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

diff --git a/tests/btrfs/176 b/tests/btrfs/176
index 9a833575b1bc54b3dad414f0d90ed17f2bf92bdf..0e6230ec799bc7b241af3805e369091f94d02835 100755 (executable)
--- a/tests/btrfs/176
+++ b/tests/btrfs/176
@@ -47,7 +47,7 @@ _check_scratch_fs "$scratch_dev2"
 echo "Replace device"
 _scratch_mkfs >> $seqres.full 2>&1
 _scratch_mount
-_format_swapfile "$SCRATCH_MNT/swap" $(($(get_page_size) * 10))
+_format_swapfile "$SCRATCH_MNT/swap" $(($(get_page_size) * 10)) > /dev/null
 $BTRFS_UTIL_PROG device add -f "$scratch_dev2" "$SCRATCH_MNT" >> $seqres.full
 swapon "$SCRATCH_MNT/swap" 2>&1 | _filter_scratch
 # Again, we know the swap file is on device 1.