qemu-iotests: add test for backing file overriding

Test that backing.file.filename option can be parsed and override the
backing file from image (backing file reflected with "info block").

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/tests/qemu-iotests/051 b/tests/qemu-iotests/051
index 1f39c6ad219bb6d42968a3f296fab02eb9c491c7..78e11823b486e3544abb86e4cd8774ae3ded1d74 100755 (executable)
--- a/tests/qemu-iotests/051
+++ b/tests/qemu-iotests/051
@@ -45,7 +45,14 @@ _supported_os Linux
 function do_run_qemu()
 {
     echo Testing: "$@"
-    echo quit | $QEMU -nographic -monitor stdio -serial none "$@"
+    (
+        if ! test -t 0; then
+            while read cmd; do
+                echo $cmd
+            done
+        fi
+        echo quit
+    ) | $QEMU -nographic -monitor stdio -serial none "$@"
     echo
 }
 
@@ -57,6 +64,9 @@ function run_qemu()
 size=128M
 
 _make_test_img $size
+cp $TEST_IMG $TEST_IMG.orig
+mv $TEST_IMG $TEST_IMG.base
+_make_test_img -b $TEST_IMG.base $size
 
 echo
 echo === Unknown option ===
@@ -67,6 +77,11 @@ run_qemu -drive file=$TEST_IMG,format=qcow2,unknown_opt=on
 run_qemu -drive file=$TEST_IMG,format=qcow2,unknown_opt=1234
 run_qemu -drive file=$TEST_IMG,format=qcow2,unknown_opt=foo
 
+echo
+echo === Overriding backing file ===
+echo
+
+echo "info block" | run_qemu -drive file=$TEST_IMG,driver=qcow2,backing.file.filename=$TEST_IMG.orig -nodefaults
 
 echo
 echo === Enable and disable lazy refcounting on the command line, plus some invalid values ===

diff --git a/tests/qemu-iotests/051.out b/tests/qemu-iotests/051.out
index 88e8fa7de07f9f73609e10f73b87e800fc72ad93..04bb236655d363c00ea3a2966a96534ac31b3733 100644 (file)
--- a/tests/qemu-iotests/051.out
+++ b/tests/qemu-iotests/051.out
@@ -1,5 +1,6 @@
 QA output created by 051
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file='TEST_DIR/t.IMGFMT.base' 
 
 === Unknown option ===
 
@@ -16,6 +17,16 @@ Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo
 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo: could not open disk image TEST_DIR/t.qcow2: Block format 'qcow2' used by device 'ide0-hd0' doesn't support the option 'unknown_opt'
 
 
+=== Overriding backing file ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,driver=qcow2,backing.file.filename=TEST_DIR/t.qcow2.orig -nodefaults
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) i\e[K\e[Din\e[K\e[D\e[Dinf\e[K\e[D\e[D\e[Dinfo\e[K\e[D\e[D\e[D\e[Dinfo \e[K\e[D\e[D\e[D\e[D\e[Dinfo b\e[K\e[D\e[D\e[D\e[D\e[D\e[Dinfo bl\e[K\e[D\e[D\e[D\e[D\e[D\e[D\e[Dinfo blo\e[K\e[D\e[D\e[D\e[D\e[D\e[D\e[D\e[Dinfo bloc\e[K\e[D\e[D\e[D\e[D\e[D\e[D\e[D\e[D\e[Dinfo block\e[K
+ide0-hd0: TEST_DIR/t.qcow2 (qcow2)
+    Backing file:     TEST_DIR/t.qcow2.orig (chain depth: 1)
+ [not inserted](qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
+
+
 === Enable and disable lazy refcounting on the command line, plus some invalid values ===
 
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on