qemu-iotests: Fix 028 reference output for qed

We need to filter out driver-specific options in the "Formatting..."
string printed by qemu when creating the backup image.

Reported-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Tested-by: Peter Wu <peter@lekensteyn.nl>

tests/qemu-iotests/028

@@ -113,6 +113,7 @@ QEMU_COMM_TIMEOUT=1
 # Silence output since it contains the disk image path and QEMU's readline
 # character echoing makes it very hard to filter the output
 _send_qemu_cmd $h "drive_backup disk ${TEST_IMG}.copy" "(qemu)" >/dev/null
+_send_qemu_cmd $h "" "Formatting" | _filter_img_create
 qemu_cmd_repeat=20 _send_qemu_cmd $h "info block-jobs" "No active jobs"
 _send_qemu_cmd $h 'quit' ""
 

tests/qemu-iotests/028.out

@@ -468,7 +468,8 @@ No errors were found on the image.
 
 block-backup
 
-Formatting 'TEST_DIR/t.qcow2.copy', fmt=qcow2 size=4294968832 backing_file='TEST_DIR/t.qcow2.base' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
+Formatting 'TEST_DIR/t.IMGFMT.copy', fmt=IMGFMT size=4294968832 backing_file='TEST_DIR/t.IMGFMT.base' backing_fmt='IMGFMT'
+(qemu) 
 (qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block-info block-jinfo block-joinfo block-jobinfo block-jobs
 Type backup, device disk: Completed 0 of 4294968832 bytes, speed limit 0 bytes/s
 iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block-info block-jinfo block-joinfo block-jobinfo block-jobs

tests/qemu-iotests/common.filter

@@ -170,5 +170,27 @@ _filter_qmp()
         -e 's#^{"QMP":.*}$#QMP_VERSION#'
 }
 
+# replace driver-specific options in the "Formatting..." line
+_filter_img_create()
+{
+    sed -e "s#$IMGPROTO:$TEST_DIR#TEST_DIR#g" \
+        -e "s#$TEST_DIR#TEST_DIR#g" \
+        -e "s#$IMGFMT#IMGFMT#g" \
+        -e "s# encryption=off##g" \
+        -e "s# cluster_size=[0-9]\\+##g" \
+        -e "s# table_size=[0-9]\\+##g" \
+        -e "s# compat='[^']*'##g" \
+        -e "s# compat6=\\(on\\|off\\)##g" \
+        -e "s# static=\\(on\\|off\\)##g" \
+        -e "s# zeroed_grain=\\(on\\|off\\)##g" \
+        -e "s# subformat='[^']*'##g" \
+        -e "s# adapter_type='[^']*'##g" \
+        -e "s# lazy_refcounts=\\(on\\|off\\)##g" \
+        -e "s# block_size=[0-9]\\+##g" \
+        -e "s# block_state_zero=\\(on\\|off\\)##g" \
+        -e "s# log_size=[0-9]\\+##g" \
+        -e "s/archipelago:a/TEST_DIR\//g"
+}
+
 # make sure this script returns success
 /bin/true

tests/qemu-iotests/common.rc

@@ -149,24 +149,7 @@ _make_test_img()
      else
         $QEMU_IMG create -f $IMGFMT $extra_img_options "$img_name" $image_size 2>&1
      fi
-    ) | \
-        sed -e "s#$IMGPROTO:$TEST_DIR#TEST_DIR#g" \
-            -e "s#$TEST_DIR#TEST_DIR#g" \
-            -e "s#$IMGFMT#IMGFMT#g" \
-            -e "s# encryption=off##g" \
-            -e "s# cluster_size=[0-9]\\+##g" \
-            -e "s# table_size=[0-9]\\+##g" \
-            -e "s# compat='[^']*'##g" \
-            -e "s# compat6=\\(on\\|off\\)##g" \
-            -e "s# static=\\(on\\|off\\)##g" \
-            -e "s# zeroed_grain=\\(on\\|off\\)##g" \
-            -e "s# subformat='[^']*'##g" \
-            -e "s# adapter_type='[^']*'##g" \
-            -e "s# lazy_refcounts=\\(on\\|off\\)##g" \
-            -e "s# block_size=[0-9]\\+##g" \
-            -e "s# block_state_zero=\\(on\\|off\\)##g" \
-            -e "s# log_size=[0-9]\\+##g" \
-            -e "s/archipelago:a/TEST_DIR\//g"
+    ) | _filter_img_create
 
     # Start an NBD server on the image file, which is what we'll be talking to
     if [ $IMGPROTO = "nbd" ]; then