iotests/image-fleecing: add test case with bitmap

Note that reads zero areas (not dirty in the bitmap) fails, that's
correct.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20220303194349.2304213-16-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

tests/qemu-iotests/tests/image-fleecing

@@ -23,12 +23,14 @@
 # Creator/Owner: John Snow <jsnow@redhat.com>
 
 import iotests
-from iotests import log, qemu_img, qemu_io, qemu_io_silent
+from iotests import log, qemu_img, qemu_io, qemu_io_silent, \
+    qemu_io_pipe_and_status
 
 iotests.script_initialize(
-    supported_fmts=['qcow2', 'qcow', 'qed', 'vmdk', 'vhdx', 'raw'],
+    supported_fmts=['qcow2'],
     supported_platforms=['linux'],
     required_fmts=['copy-before-write'],
+    unsupported_imgopts=['compat']
 )
 
 patterns = [('0x5d', '0',         '64k'),
@@ -50,11 +52,15 @@ remainder = [('0xd5', '0x108000',  '32k'), # Right-end of partial-left [1]
              ('0xcd', '0x3ff0000', '64k')] # patterns[3]
 
 def do_test(use_cbw, use_snapshot_access_filter, base_img_path,
-            fleece_img_path, nbd_sock_path, vm):
+            fleece_img_path, nbd_sock_path, vm,
+            bitmap=False):
     log('--- Setting up images ---')
     log('')
 
     assert qemu_img('create', '-f', iotests.imgfmt, base_img_path, '64M') == 0
+    if bitmap:
+        assert qemu_img('bitmap', '--add', base_img_path, 'bitmap0') == 0
+
     if use_snapshot_access_filter:
         assert use_cbw
         assert qemu_img('create', '-f', 'raw', fleece_img_path, '64M') == 0
@@ -106,12 +112,17 @@ def do_test(use_cbw, use_snapshot_access_filter, base_img_path,
 
     # Establish CBW from source to fleecing node
     if use_cbw:
-        log(vm.qmp('blockdev-add', {
+        fl_cbw = {
             'driver': 'copy-before-write',
             'node-name': 'fl-cbw',
             'file': src_node,
             'target': tmp_node
-        }))
+        }
+
+        if bitmap:
+            fl_cbw['bitmap'] = {'node': src_node, 'name': 'bitmap0'}
+
+        log(vm.qmp('blockdev-add', fl_cbw))
 
         log(vm.qmp('qom-set', path=qom_path, property='drive', value='fl-cbw'))
 
@@ -148,7 +159,10 @@ def do_test(use_cbw, use_snapshot_access_filter, base_img_path,
     for p in patterns + zeroes:
         cmd = 'read -P%s %s %s' % p
         log(cmd)
-        assert qemu_io_silent('-r', '-f', 'raw', '-c', cmd, nbd_uri) == 0
+        out, ret = qemu_io_pipe_and_status('-r', '-f', 'raw', '-c', cmd,
+                                           nbd_uri)
+        if ret != 0:
+            print(out)
 
     log('')
     log('--- Testing COW ---')
@@ -166,7 +180,10 @@ def do_test(use_cbw, use_snapshot_access_filter, base_img_path,
     for p in patterns + zeroes:
         cmd = 'read -P%s %s %s' % p
         log(cmd)
-        assert qemu_io_silent('-r', '-f', 'raw', '-c', cmd, nbd_uri) == 0
+        out, ret = qemu_io_pipe_and_status('-r', '-f', 'raw', '-c', cmd,
+                                           nbd_uri)
+        if ret != 0:
+            print(out)
 
     log('')
     log('--- Cleanup ---')
@@ -201,14 +218,14 @@ def do_test(use_cbw, use_snapshot_access_filter, base_img_path,
     log('Done')
 
 
-def test(use_cbw, use_snapshot_access_filter):
+def test(use_cbw, use_snapshot_access_filter, bitmap=False):
     with iotests.FilePath('base.img') as base_img_path, \
          iotests.FilePath('fleece.img') as fleece_img_path, \
          iotests.FilePath('nbd.sock',
                           base_dir=iotests.sock_dir) as nbd_sock_path, \
          iotests.VM() as vm:
         do_test(use_cbw, use_snapshot_access_filter, base_img_path,
-                fleece_img_path, nbd_sock_path, vm)
+                fleece_img_path, nbd_sock_path, vm, bitmap=bitmap)
 
 
 log('=== Test backup(sync=none) based fleecing ===\n')
@@ -219,3 +236,6 @@ test(True, False)
 
 log('=== Test fleecing-format based fleecing ===\n')
 test(True, True)
+
+log('=== Test fleecing-format based fleecing with bitmap ===\n')
+test(True, True, bitmap=True)

tests/qemu-iotests/tests/image-fleecing.out

@@ -190,6 +190,90 @@ read -P0 0x00f8000 32k
 read -P0 0x2010000 32k
 read -P0 0x3fe0000 64k
 
+--- Cleanup ---
+
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+
+--- Confirming writes ---
+
+read -P0xab 0 64k
+read -P0xad 0x00f8000 64k
+read -P0x1d 0x2008000 64k
+read -P0xea 0x3fe0000 64k
+read -P0xd5 0x108000 32k
+read -P0xdc 32M 32k
+read -P0xcd 0x3ff0000 64k
+
+Done
+=== Test fleecing-format based fleecing with bitmap ===
+
+--- Setting up images ---
+
+Done
+
+--- Launching VM ---
+
+Done
+
+--- Setting up Fleecing Graph ---
+
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+
+--- Setting up NBD Export ---
+
+{"return": {}}
+{"return": {}}
+
+--- Sanity Check ---
+
+read -P0x5d 0 64k
+read -P0xd5 1M 64k
+read -P0xdc 32M 64k
+read -P0xcd 0x3ff0000 64k
+read -P0 0x00f8000 32k
+read failed: Invalid argument
+
+read -P0 0x2010000 32k
+read failed: Invalid argument
+
+read -P0 0x3fe0000 64k
+read failed: Invalid argument
+
+
+--- Testing COW ---
+
+write -P0xab 0 64k
+{"return": ""}
+write -P0xad 0x00f8000 64k
+{"return": ""}
+write -P0x1d 0x2008000 64k
+{"return": ""}
+write -P0xea 0x3fe0000 64k
+{"return": ""}
+
+--- Verifying Data ---
+
+read -P0x5d 0 64k
+read -P0xd5 1M 64k
+read -P0xdc 32M 64k
+read -P0xcd 0x3ff0000 64k
+read -P0 0x00f8000 32k
+read failed: Invalid argument
+
+read -P0 0x2010000 32k
+read failed: Invalid argument
+
+read -P0 0x3fe0000 64k
+read failed: Invalid argument
+
+
 --- Cleanup ---
 
 {"return": {}}