qemu-iotests: Try setting cache mode for children
This is a basic test for specifying cache modes for child nodes on the
command line. It doesn't take much time and works without O_DIRECT
support.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
diff --git a/tests/qemu-iotests/051 b/tests/qemu-iotests/051
index f6f0f4d..da90f59 100755
--- a/tests/qemu-iotests/051
+++ b/tests/qemu-iotests/051
@@ -61,7 +61,7 @@
function run_qemu()
{
- do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu
+ do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_generated_node_ids
}
size=128M
@@ -190,6 +190,14 @@
run_qemu -drive driver=null-co,cache=unsafe
run_qemu -drive driver=null-co,cache=invalid_value
+# Can't test direct=on here because O_DIRECT might not be supported on this FS
+# Test 142 checks the direct=on cases
+
+for cache in writeback writethrough unsafe invalid_value; do
+ echo -e "info block\ninfo block file\ninfo block backing\ninfo block backing-file" | \
+ run_qemu -drive file="$TEST_IMG",cache=$cache,backing.file.filename="$TEST_IMG.base",backing.cache.no-flush=on,backing.cache.writeback=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file -nodefaults
+done
+
echo
echo === Specifying the protocol layer ===
echo
