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

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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>
This commit is contained in:
Darrick J. Wong
2017-11-15 17:22:25 -08:00
committed by Eryu Guan
parent eb48c30502
commit 01140c76e4
1 changed files with 8 additions and 3 deletions
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common/fuzzy
+8 -3
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@@ -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