iotests: Valgrind fails with nonexistent directory

The Valgrind uses the exported variable TMPDIR and fails if the
directory does not exist. Let us exclude such a test case from
being run under the Valgrind and notify the user of it.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/tests/qemu-iotests/051 b/tests/qemu-iotests/051
index ce942a5..53bcdbc 100755 (executable)
--- a/tests/qemu-iotests/051
+++ b/tests/qemu-iotests/051
@@ -377,6 +377,10 @@ printf %b "qemu-io $device_id \"write -P 0x33 0 4k\"\ncommit $device_id\n" |
 $QEMU_IO -c "read -P 0x33 0 4k" "$TEST_IMG" | _filter_qemu_io
 
 # Using snapshot=on with a non-existent TMPDIR
+if [ "${VALGRIND_QEMU_VM}" == "y" ]; then
+    _casenotrun "Valgrind needs a valid TMPDIR for itself"
+fi
+VALGRIND_QEMU_VM= \
 TMPDIR=/nonexistent run_qemu -drive driver=null-co,snapshot=on
 
 # Using snapshot=on together with read-only=on