From: Qu Wenruo <quwenruo@cn.fujitsu.com>
Date: Mon, 26 Dec 2016 04:57:52 +0000 (+0800)
Subject: btrfs/132: wait the writer to avoid EBUSY
X-Git-Tag: v2022.05.01~2251
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=2333197d308e0674aefb90620a833cb7e0ee6b6e;p=xfstests-dev.git

btrfs/132: wait the writer to avoid EBUSY

The kill and wait method will only wait for the children process to
exit, while the xfs_io can still run at background.

This makes the test always fails on HDD backed physical machine.

Use the "while ps aux | grep" method in btrfs/069 to truely wait the
xfs_io to finish.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
---

diff --git a/tests/btrfs/132 b/tests/btrfs/132
index 05161772..db0dcb04 100755
--- a/tests/btrfs/132
+++ b/tests/btrfs/132
@@ -94,9 +94,10 @@ sleep $sleep_time
 kill $pids
 wait
 
-# Sync the fs to avoid EBUSY while umount, which is quite common for btrfs
-# compression
-sync
+# Wait all writers really exits
+while ps aux | grep "$SCRATCH_MNT" | grep -qv grep; do
+	sleep 1
+done
 
 echo "Silence is golden"
 status=0