-c 'write 0 4k'; } 2>&1 | _filter_qemu_io | _filter_testdir
{ $QEMU_IMG snapshot -a test $TEST_IMG; } 2>&1 | _filter_testdir
{ $QEMU_IMG snapshot -d test $TEST_IMG; } 2>&1 | _filter_testdir
-c 'write 0 4k'; } 2>&1 | _filter_qemu_io | _filter_testdir
{ $QEMU_IMG snapshot -a test $TEST_IMG; } 2>&1 | _filter_testdir
{ $QEMU_IMG snapshot -d test $TEST_IMG; } 2>&1 | _filter_testdir