qemu-iotests: Handle cache mode option in 091
We should allow testing this on tmpfs. Any cache setting in iotests
should try to obey $CACHEMODE.
The cache mode is still "none" by default but overridable
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
diff --git a/tests/qemu-iotests/091 b/tests/qemu-iotests/091
index 384b3ac..32bbd56 100755
--- a/tests/qemu-iotests/091
+++ b/tests/qemu-iotests/091
@@ -47,6 +47,8 @@
_supported_fmt qcow2
_supported_proto file
_supported_os Linux
+_default_cache_mode "none"
+_supported_cache_modes "writethrough" "none" "writeback"
size=1G
@@ -59,13 +61,13 @@
echo
qemu_comm_method="monitor"
-_launch_qemu -drive file="${TEST_IMG}",cache=none,id=disk
+_launch_qemu -drive file="${TEST_IMG}",cache=${CACHEMODE},id=disk
h1=$QEMU_HANDLE
echo
echo === Starting QEMU VM2 ===
echo
-_launch_qemu -drive file="${TEST_IMG}",cache=none,id=disk \
+_launch_qemu -drive file="${TEST_IMG}",cache=${CACHEMODE},id=disk \
-incoming "exec: cat '${MIG_FIFO}'"
h2=$QEMU_HANDLE
