From: Darrick J. Wong <darrick.wong@oracle.com>
Date: Thu, 16 Nov 2017 01:22:25 +0000 (-0800)
Subject: common/fuzzy: if the fuzz verb is random, keep fuzzing until we get a new value
X-Git-Tag: v2022.05.01~1779
X-Git-Url: http://git.apps.os.sepia.ceph.com/?p=xfstests-dev.git;a=commitdiff_plain;h=01140c76e4854634b6ec0c94eadc2045864e7fb1

common/fuzzy: if the fuzz verb is random, keep fuzzing until we get a new value

If the fuzz verb is 'random', keep generating new random values
until we get one that is distinct from the previous value.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
---

diff --git a/common/fuzzy b/common/fuzzy
index 3d86e1c8..d70964f4 100644
--- a/common/fuzzy
+++ b/common/fuzzy
@@ -179,9 +179,14 @@ _scratch_xfs_fuzz_metadata_field() {
 	for arg in "$@"; do
 		cmds+=("-c" "${arg}")
 	done
-	_scratch_xfs_db -x "${cmds[@]}" -c "fuzz ${fuzz_arg} ${key} ${value}"
-	echo
-	newval="$(_scratch_xfs_get_metadata_field "${key}" "$@" 2> /dev/null)"
+	while true; do
+		_scratch_xfs_db -x "${cmds[@]}" -c "fuzz ${fuzz_arg} ${key} ${value}"
+		echo
+		newval="$(_scratch_xfs_get_metadata_field "${key}" "$@" 2> /dev/null)"
+		if [ "${key}" != "random" ] || [ "${oldval}" != "${newval}" ]; then
+			break;
+		fi
+	done
 	if [ "${oldval}" = "${newval}" ]; then
 		echo "Field ${key} already set to ${newval}, skipping test."
 		return 1