[PULL 00/24] Block patches

[PULL 00/24] Block patches

[Hanna Reitz]

The following changes since commit 804b30d25f8d70dc2dea951883ea92235274a50c:

  Merge remote-tracking branch 'remotes/legoater/tags/pull-ppc-20220130' into staging (2022-01-31 11:10:08 +0000)

are available in the Git repository at:

  https://gitlab.com/hreitz/qemu.git tags/pull-block-2022-02-01

for you to fetch changes up to 751486c18555169ca4baf59440275d5831140822:

  block.h: remove outdated comment (2022-02-01 13:28:53 +0100)

----------------------------------------------------------------
Block patches:
- Add support to the iotests to test qcow2's zstd compression mode
- Fix post-migration block node permissions
- iotests fixes (051 and mirror-ready-cancel-error)
- Remove an outdated comment

----------------------------------------------------------------
Emanuele Giuseppe Esposito (1):
  block.h: remove outdated comment

Hanna Reitz (3):
  iotests/MRCE: Write data to source
  block-backend: Retain permissions after migration
  iotests/migration-permissions: New test

Thomas Huth (1):
  tests/qemu-iotests: Fix 051 for binaries without 'lsi53c895a'

Vladimir Sementsov-Ogievskiy (19):
  iotests.py: img_info_log(): rename imgopts argument
  iotests.py: implement unsupported_imgopts
  iotests: specify some unsupported_imgopts for python iotests
  iotests.py: qemu_img*("create"): support
    IMGOPTS='compression_type=zstd'
  iotests: drop qemu_img_verbose() helper
  iotests.py: rewrite default luks support in qemu_img
  iotest 303: explicit compression type
  iotest 065: explicit compression type
  iotests.py: filter out successful output of qemu-img create
  iotests.py: filter compression type out
  iotest 302: use img_info_log() helper
  qcow2: simple case support for downgrading of qcow2 images with zstd
  iotests/common.rc: introduce _qcow2_dump_header helper
  iotests: massive use _qcow2_dump_header
  iotest 39: use _qcow2_dump_header
  iotests: bash tests: filter compression type
  iotests 60: more accurate set dirty bit in qcow2 header
  iotest 214: explicit compression type
  iotests: declare lack of support for compresion_type in IMGOPTS

 include/block/block.h                         |   1 -
 block/block-backend.c                         |  11 ++
 block/qcow2.c                                 |  58 +++++++++-
 tests/qemu-iotests/031                        |  11 +-
 tests/qemu-iotests/036                        |   6 +-
 tests/qemu-iotests/039                        |  22 ++--
 tests/qemu-iotests/044                        |   8 +-
 tests/qemu-iotests/044.out                    |   1 +
 tests/qemu-iotests/051                        |   9 +-
 tests/qemu-iotests/060                        |  22 ++--
 tests/qemu-iotests/060.out                    |   2 +-
 tests/qemu-iotests/061                        |  42 ++++----
 tests/qemu-iotests/061.out                    |  12 +--
 tests/qemu-iotests/065                        |  19 ++--
 tests/qemu-iotests/082.out                    |  14 +--
 tests/qemu-iotests/112                        |   3 +-
 tests/qemu-iotests/137                        |   2 +-
 tests/qemu-iotests/149.out                    |  21 ----
 tests/qemu-iotests/163                        |   3 +-
 tests/qemu-iotests/165                        |   3 +-
 tests/qemu-iotests/196                        |   3 +-
 tests/qemu-iotests/198.out                    |   4 +-
 tests/qemu-iotests/206.out                    |  10 +-
 tests/qemu-iotests/209                        |   7 +-
 tests/qemu-iotests/209.out                    |   2 +
 tests/qemu-iotests/210                        |   8 +-
 tests/qemu-iotests/214                        |   2 +-
 tests/qemu-iotests/237.out                    |   3 -
 tests/qemu-iotests/242                        |   3 +-
 tests/qemu-iotests/242.out                    |  10 +-
 tests/qemu-iotests/246                        |   3 +-
 tests/qemu-iotests/254                        |   3 +-
 tests/qemu-iotests/255.out                    |   4 -
 tests/qemu-iotests/260                        |   3 +-
 tests/qemu-iotests/274                        |   3 +-
 tests/qemu-iotests/274.out                    |  39 +------
 tests/qemu-iotests/280.out                    |   1 -
 tests/qemu-iotests/281                        |   3 +-
 tests/qemu-iotests/287                        |   8 +-
 tests/qemu-iotests/290                        |   2 +-
 tests/qemu-iotests/296.out                    |  10 +-
 tests/qemu-iotests/302                        |   4 +-
 tests/qemu-iotests/302.out                    |   7 +-
 tests/qemu-iotests/303                        |  26 +++--
 tests/qemu-iotests/303.out                    |  30 +++++-
 tests/qemu-iotests/common.filter              |   8 ++
 tests/qemu-iotests/common.rc                  |  22 ++++
 tests/qemu-iotests/iotests.py                 |  99 +++++++++++------
 .../tests/migrate-bitmaps-postcopy-test       |   3 +-
 tests/qemu-iotests/tests/migrate-bitmaps-test |   3 +-
 .../qemu-iotests/tests/migration-permissions  | 101 ++++++++++++++++++
 .../tests/migration-permissions.out           |   5 +
 .../tests/mirror-ready-cancel-error           |   7 +-
 .../tests/remove-bitmap-from-backing          |   3 +-
 54 files changed, 483 insertions(+), 236 deletions(-)
 create mode 100755 tests/qemu-iotests/tests/migration-permissions
 create mode 100644 tests/qemu-iotests/tests/migration-permissions.out

-- 
2.34.1

[PULL 01/24] tests/qemu-iotests: Fix 051 for binaries without 'lsi53c895a'

[Hanna Reitz]

From: Thomas Huth <thuth@redhat.com>

The lsi53c895a SCSI adaptor might not be enabled in each and every
x86 QEMU binary, e.g. it's disabled in the RHEL/CentOS build.
Thus let's add a check to the 051 test so that it does not fail if
this device is not available.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211206143404.247032-1-thuth@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/051 | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/qemu-iotests/051 b/tests/qemu-iotests/051
index 1d2fa93a11..e9042a6214 100755
--- a/tests/qemu-iotests/051
+++ b/tests/qemu-iotests/051
@@ -45,6 +45,10 @@ _supported_proto file
 _unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' data_file
 _require_drivers nbd
 
+if [ "$QEMU_DEFAULT_MACHINE" = "pc" ]; then
+    _require_devices lsi53c895a
+fi
+
 do_run_qemu()
 {
     echo Testing: "$@"
-- 
2.34.1

[PULL 02/24] iotests/MRCE: Write data to source

[Hanna Reitz]

This test assumes that mirror flushes the source when entering the READY
state, and that the format level will pass that flush on to the protocol
level (where we intercept it with blkdebug).

However, apparently that does not happen when using a VMDK image with
zeroed_grain=on, which actually is the default set by testenv.py.  Right
now, Python tests ignore IMGOPTS, though, so this has no effect; but
Vladimir has a series that will change this, so we need to fix this test
before that series lands.

We can fix it by writing data to the source before we start the mirror
job; apparently that makes the (VMDK) format layer change its mind and
pass on the pre-READY flush to the protocol level, so the test passes
again.  (I presume, without any data written, mirror just does a 64M
zero write on the target, which VMDK with zeroed_grain=on basically just
ignores.)

Without this, we do not get a flush, and so blkdebug only sees a single
flush at the end of the job instead of two, and therefore does not
inject an error, which makes the block job complete instead of raising
an error.

Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223165308.103793-1-hreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 tests/qemu-iotests/tests/mirror-ready-cancel-error | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/tests/mirror-ready-cancel-error b/tests/qemu-iotests/tests/mirror-ready-cancel-error
index f2dc88881f..770ffca379 100755
--- a/tests/qemu-iotests/tests/mirror-ready-cancel-error
+++ b/tests/qemu-iotests/tests/mirror-ready-cancel-error
@@ -36,6 +36,11 @@ class TestMirrorReadyCancelError(iotests.QMPTestCase):
         assert iotests.qemu_img_create('-f', iotests.imgfmt, target,
                                        str(image_size)) == 0
 
+        # Ensure that mirror will copy something before READY so the
+        # target format layer will forward the pre-READY flush to its
+        # file child
+        assert iotests.qemu_io_silent('-c', 'write -P 1 0 64k', source) == 0
+
         self.vm = iotests.VM()
         self.vm.launch()
 
@@ -97,7 +102,7 @@ class TestMirrorReadyCancelError(iotests.QMPTestCase):
         # Write something so will not leave the job immediately, but
         # flush first (which will fail, thanks to blkdebug)
         res = self.vm.qmp('human-monitor-command',
-                          command_line='qemu-io mirror-top "write 0 64k"')
+                          command_line='qemu-io mirror-top "write -P 2 0 64k"')
         self.assert_qmp(res, 'return', '')
 
         # Drain status change events
-- 
2.34.1

[PULL 03/24] iotests.py: img_info_log(): rename imgopts argument

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

We are going to support IMGOPTS environment variable like in bash
tests. Corresponding global variable in iotests.py should be called
imgopts. So to not interfere with function argument, rename it in
advance.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20211223160144.1097696-2-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/210        | 8 ++++----
 tests/qemu-iotests/iotests.py | 5 +++--
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/tests/qemu-iotests/210 b/tests/qemu-iotests/210
index a4dcc5fe59..10b0a0b87c 100755
--- a/tests/qemu-iotests/210
+++ b/tests/qemu-iotests/210
@@ -62,7 +62,7 @@ with iotests.FilePath('t.luks') as disk_path, \
         'driver=luks,file.driver=file,file.filename=%s,key-secret=keysec0' % (disk_path),
         filter_path=disk_path,
         extra_args=['--object', 'secret,id=keysec0,data=foo'],
-        imgopts=True)
+        use_image_opts=True)
 
     #
     # Successful image creation (with non-default options)
@@ -96,7 +96,7 @@ with iotests.FilePath('t.luks') as disk_path, \
         'driver=luks,file.driver=file,file.filename=%s,key-secret=keysec0' % (disk_path),
         filter_path=disk_path,
         extra_args=['--object', 'secret,id=keysec0,data=foo'],
-        imgopts=True)
+        use_image_opts=True)
 
     #
     # Invalid BlockdevRef
@@ -132,7 +132,7 @@ with iotests.FilePath('t.luks') as disk_path, \
         'driver=luks,file.driver=file,file.filename=%s,key-secret=keysec0' % (disk_path),
         filter_path=disk_path,
         extra_args=['--object', 'secret,id=keysec0,data=foo'],
-        imgopts=True)
+        use_image_opts=True)
 
     #
     # Invalid sizes
@@ -176,4 +176,4 @@ with iotests.FilePath('t.luks') as disk_path, \
         'driver=luks,file.driver=file,file.filename=%s,key-secret=keysec0' % (disk_path),
         filter_path=disk_path,
         extra_args=['--object', 'secret,id=keysec0,data=foo'],
-        imgopts=True)
+        use_image_opts=True)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 1e2f2391d1..30a8837ea2 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -227,9 +227,10 @@ def qemu_img_log(*args):
     log(result, filters=[filter_testfiles])
     return result
 
-def img_info_log(filename, filter_path=None, imgopts=False, extra_args=()):
+def img_info_log(filename, filter_path=None, use_image_opts=False,
+                 extra_args=()):
     args = ['info']
-    if imgopts:
+    if use_image_opts:
         args.append('--image-opts')
     else:
         args += ['-f', imgfmt]
-- 
2.34.1

[PULL 04/24] iotests.py: implement unsupported_imgopts

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

We are going to support some addition IMGOPTS in python iotests like
in bash iotests. Similarly to bash iotests, we want a way to skip some
tests which can't work with specific IMGOPTS.

Globally for python iotests we will not support things like
'data_file=$TEST_IMG.ext_data_file' in IMGOPTS, so, forbid this
globally in iotests.py.

Suggested-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223160144.1097696-3-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/iotests.py | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 30a8837ea2..2fa5dcba76 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -1226,6 +1226,17 @@ def _verify_virtio_scsi_pci_or_ccw() -> None:
         notrun('Missing virtio-scsi-pci or virtio-scsi-ccw in QEMU binary')
 
 
+def _verify_imgopts(unsupported: Sequence[str] = ()) -> None:
+    imgopts = os.environ.get('IMGOPTS')
+    # One of usage examples for IMGOPTS is "data_file=$TEST_IMG.ext_data_file"
+    # but it supported only for bash tests. We don't have a concept of global
+    # TEST_IMG in iotests.py, not saying about somehow parsing $variables.
+    # So, for simplicity let's just not support any IMGOPTS with '$' inside.
+    unsup = list(unsupported) + ['$']
+    if imgopts and any(x in imgopts for x in unsup):
+        notrun(f'not suitable for this imgopts: {imgopts}')
+
+
 def supports_quorum():
     return 'quorum' in qemu_img_pipe('--help')
 
@@ -1402,7 +1413,8 @@ def execute_setup_common(supported_fmts: Sequence[str] = (),
                          unsupported_fmts: Sequence[str] = (),
                          supported_protocols: Sequence[str] = (),
                          unsupported_protocols: Sequence[str] = (),
-                         required_fmts: Sequence[str] = ()) -> bool:
+                         required_fmts: Sequence[str] = (),
+                         unsupported_imgopts: Sequence[str] = ()) -> bool:
     """
     Perform necessary setup for either script-style or unittest-style tests.
 
@@ -1422,6 +1434,7 @@ def execute_setup_common(supported_fmts: Sequence[str] = (),
     _verify_aio_mode(supported_aio_modes)
     _verify_formats(required_fmts)
     _verify_virtio_blk()
+    _verify_imgopts(unsupported_imgopts)
 
     return debug
 
-- 
2.34.1

[PULL 05/24] iotests: specify some unsupported_imgopts for python iotests

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

We are going to support IMGOPTS for python iotests. Still some iotests
will not work with common IMGOPTS used with bash iotests like
specifying refcount_bits and compat qcow2 options. So we
should define corresponding unsupported_imgopts for now.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20211223160144.1097696-4-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/044                                 | 3 ++-
 tests/qemu-iotests/065                                 | 3 ++-
 tests/qemu-iotests/163                                 | 3 ++-
 tests/qemu-iotests/165                                 | 3 ++-
 tests/qemu-iotests/196                                 | 3 ++-
 tests/qemu-iotests/242                                 | 3 ++-
 tests/qemu-iotests/246                                 | 3 ++-
 tests/qemu-iotests/254                                 | 3 ++-
 tests/qemu-iotests/260                                 | 3 ++-
 tests/qemu-iotests/274                                 | 3 ++-
 tests/qemu-iotests/281                                 | 3 ++-
 tests/qemu-iotests/303                                 | 3 ++-
 tests/qemu-iotests/tests/migrate-bitmaps-postcopy-test | 3 ++-
 tests/qemu-iotests/tests/migrate-bitmaps-test          | 3 ++-
 tests/qemu-iotests/tests/remove-bitmap-from-backing    | 3 ++-
 15 files changed, 30 insertions(+), 15 deletions(-)

diff --git a/tests/qemu-iotests/044 b/tests/qemu-iotests/044
index 64b18eb7c8..d696e6442a 100755
--- a/tests/qemu-iotests/044
+++ b/tests/qemu-iotests/044
@@ -117,4 +117,5 @@ class TestRefcountTableGrowth(iotests.QMPTestCase):
 
 if __name__ == '__main__':
     iotests.main(supported_fmts=['qcow2'],
-                 supported_protocols=['file'])
+                 supported_protocols=['file'],
+                 unsupported_imgopts=['refcount_bits'])
diff --git a/tests/qemu-iotests/065 b/tests/qemu-iotests/065
index 3c2ca27627..dc7716275f 100755
--- a/tests/qemu-iotests/065
+++ b/tests/qemu-iotests/065
@@ -139,4 +139,5 @@ TestQMP = None
 
 if __name__ == '__main__':
     iotests.main(supported_fmts=['qcow2'],
-                 supported_protocols=['file'])
+                 supported_protocols=['file'],
+                 unsupported_imgopts=['refcount_bits'])
diff --git a/tests/qemu-iotests/163 b/tests/qemu-iotests/163
index dedce8ef43..b8bfc95358 100755
--- a/tests/qemu-iotests/163
+++ b/tests/qemu-iotests/163
@@ -169,4 +169,5 @@ ShrinkBaseClass = None
 
 if __name__ == '__main__':
     iotests.main(supported_fmts=['raw', 'qcow2'],
-                 supported_protocols=['file'])
+                 supported_protocols=['file'],
+                 unsupported_imgopts=['compat'])
diff --git a/tests/qemu-iotests/165 b/tests/qemu-iotests/165
index ce499946b8..e3ef28e2ee 100755
--- a/tests/qemu-iotests/165
+++ b/tests/qemu-iotests/165
@@ -157,4 +157,5 @@ class TestPersistentDirtyBitmap(iotests.QMPTestCase):
 
 if __name__ == '__main__':
     iotests.main(supported_fmts=['qcow2'],
-                 supported_protocols=['file'])
+                 supported_protocols=['file'],
+                 unsupported_imgopts=['compat'])
diff --git a/tests/qemu-iotests/196 b/tests/qemu-iotests/196
index 2451515094..76509a5ad1 100755
--- a/tests/qemu-iotests/196
+++ b/tests/qemu-iotests/196
@@ -65,4 +65,5 @@ class TestInvalidateAutoclear(iotests.QMPTestCase):
 
 if __name__ == '__main__':
     iotests.main(supported_fmts=['qcow2'],
-                 supported_protocols=['file'])
+                 supported_protocols=['file'],
+                 unsupported_imgopts=['compat'])
diff --git a/tests/qemu-iotests/242 b/tests/qemu-iotests/242
index a9b27668c2..96a30152b0 100755
--- a/tests/qemu-iotests/242
+++ b/tests/qemu-iotests/242
@@ -26,7 +26,8 @@ from iotests import qemu_img_create, qemu_io, qemu_img_pipe, \
     file_path, img_info_log, log, filter_qemu_io
 
 iotests.script_initialize(supported_fmts=['qcow2'],
-                          supported_protocols=['file'])
+                          supported_protocols=['file'],
+                          unsupported_imgopts=['refcount_bits', 'compat'])
 
 disk = file_path('disk')
 chunk = 256 * 1024
diff --git a/tests/qemu-iotests/246 b/tests/qemu-iotests/246
index 5932a0e8a9..b009a78397 100755
--- a/tests/qemu-iotests/246
+++ b/tests/qemu-iotests/246
@@ -23,7 +23,8 @@
 import iotests
 from iotests import log
 
-iotests.script_initialize(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'],
+                          unsupported_imgopts=['compat'])
 size = 64 * 1024 * 1024 * 1024
 gran_small = 32 * 1024
 gran_large = 128 * 1024
diff --git a/tests/qemu-iotests/254 b/tests/qemu-iotests/254
index 108bf5f894..7ea098818c 100755
--- a/tests/qemu-iotests/254
+++ b/tests/qemu-iotests/254
@@ -22,7 +22,8 @@
 import iotests
 from iotests import qemu_img_create, file_path, log
 
-iotests.script_initialize(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'],
+                          unsupported_imgopts=['compat'])
 
 disk, top = file_path('disk', 'top')
 size = 1024 * 1024
diff --git a/tests/qemu-iotests/260 b/tests/qemu-iotests/260
index 2ec64a9b99..c2133f9980 100755
--- a/tests/qemu-iotests/260
+++ b/tests/qemu-iotests/260
@@ -23,7 +23,8 @@ import iotests
 from iotests import qemu_img_create, file_path, log, filter_qmp_event
 
 iotests.script_initialize(
-    supported_fmts=['qcow2']
+    supported_fmts=['qcow2'],
+    unsupported_imgopts=['compat']
 )
 
 base, top = file_path('base', 'top')
diff --git a/tests/qemu-iotests/274 b/tests/qemu-iotests/274
index caab008e07..080a90f10f 100755
--- a/tests/qemu-iotests/274
+++ b/tests/qemu-iotests/274
@@ -23,7 +23,8 @@
 import iotests
 
 iotests.script_initialize(supported_fmts=['qcow2'],
-                          supported_platforms=['linux'])
+                          supported_platforms=['linux'],
+                          unsupported_imgopts=['refcount_bits', 'compat'])
 
 size_short = 1 * 1024 * 1024
 size_long = 2 * 1024 * 1024
diff --git a/tests/qemu-iotests/281 b/tests/qemu-iotests/281
index 956698083f..318e333939 100755
--- a/tests/qemu-iotests/281
+++ b/tests/qemu-iotests/281
@@ -245,4 +245,5 @@ class TestBlockdevBackupAbort(iotests.QMPTestCase):
 
 if __name__ == '__main__':
     iotests.main(supported_fmts=['qcow2'],
-                 supported_protocols=['file'])
+                 supported_protocols=['file'],
+                 unsupported_imgopts=['compat'])
diff --git a/tests/qemu-iotests/303 b/tests/qemu-iotests/303
index 425544c064..475cb5428d 100755
--- a/tests/qemu-iotests/303
+++ b/tests/qemu-iotests/303
@@ -23,7 +23,8 @@ import iotests
 import subprocess
 from iotests import qemu_img_create, qemu_io, file_path, log, filter_qemu_io
 
-iotests.script_initialize(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'],
+                          unsupported_imgopts=['refcount_bits', 'compat'])
 
 disk = file_path('disk')
 chunk = 1024 * 1024
diff --git a/tests/qemu-iotests/tests/migrate-bitmaps-postcopy-test b/tests/qemu-iotests/tests/migrate-bitmaps-postcopy-test
index 00ebb5c251..fc9c4b4ef4 100755
--- a/tests/qemu-iotests/tests/migrate-bitmaps-postcopy-test
+++ b/tests/qemu-iotests/tests/migrate-bitmaps-postcopy-test
@@ -272,4 +272,5 @@ class TestDirtyBitmapPostcopyMigration(iotests.QMPTestCase):
 
 
 if __name__ == '__main__':
-    iotests.main(supported_fmts=['qcow2'])
+    iotests.main(supported_fmts=['qcow2'],
+                 unsupported_imgopts=['compat'])
diff --git a/tests/qemu-iotests/tests/migrate-bitmaps-test b/tests/qemu-iotests/tests/migrate-bitmaps-test
index c23df3d75c..59f3357580 100755
--- a/tests/qemu-iotests/tests/migrate-bitmaps-test
+++ b/tests/qemu-iotests/tests/migrate-bitmaps-test
@@ -307,7 +307,8 @@ def main() -> None:
 
     iotests.main(
         supported_fmts=['qcow2'],
-        supported_protocols=['file']
+        supported_protocols=['file'],
+        unsupported_imgopts=['compat']
     )
 
 
diff --git a/tests/qemu-iotests/tests/remove-bitmap-from-backing b/tests/qemu-iotests/tests/remove-bitmap-from-backing
index 8d48fc0f3c..3c397b08ea 100755
--- a/tests/qemu-iotests/tests/remove-bitmap-from-backing
+++ b/tests/qemu-iotests/tests/remove-bitmap-from-backing
@@ -21,7 +21,8 @@
 import iotests
 from iotests import log, qemu_img_create, qemu_img, qemu_img_pipe
 
-iotests.script_initialize(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'],
+                          unsupported_imgopts=['compat'])
 
 top, base = iotests.file_path('top', 'base')
 size = '1M'
-- 
2.34.1

[PULL 06/24] iotests.py: qemu_img*("create"): support IMGOPTS='compression_type=zstd'

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

Adding support of IMGOPTS (like in bash tests) allows user to pass a
lot of different options. Still, some may require additional logic.

Now we want compression_type option, so add some smart logic around it:
ignore compression_type=zstd in IMGOPTS, if test want qcow2 in
compatibility mode. As well, ignore compression_type for non-qcow2
formats.

Note that we may instead add support only to qemu_img_create(), but
that works bad:

1. We'll have to update a lot of tests to use qemu_img_create instead
   of qemu_img('create'). (still, we may want do it anyway, but no
   reason to create a dependancy between task of supporting IMGOPTS and
   updating a lot of tests)

2. Some tests use qemu_img_pipe('create', ..) - even more work on
   updating

3. Even if we update all tests to go through qemu_img_create, we'll
   need a way to avoid creating new tests using qemu_img*('create') -
   add assertions.. That doesn't seem good.

So, let's add support of IMGOPTS to most generic
qemu_img_pipe_and_status().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223160144.1097696-5-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/iotests.py | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 2fa5dcba76..740f8be36b 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -16,6 +16,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+import argparse
 import atexit
 import bz2
 from collections import OrderedDict
@@ -161,11 +162,35 @@ def qemu_tool_pipe_and_status(tool: str, args: Sequence[str],
                                {-subp.returncode}: {cmd}\n')
         return (output, subp.returncode)
 
+def qemu_img_create_prepare_args(args: List[str]) -> List[str]:
+    if not args or args[0] != 'create':
+        return list(args)
+    args = args[1:]
+
+    p = argparse.ArgumentParser(allow_abbrev=False)
+    p.add_argument('-f')
+    parsed, remaining = p.parse_known_args(args)
+
+    result = ['create']
+    if parsed.f is not None:
+        result += ['-f', parsed.f]
+
+    # IMGOPTS most probably contain options specific for the selected format,
+    # like extended_l2 or compression_type for qcow2. Test may want to create
+    # additional images in other formats that doesn't support these options.
+    # So, use IMGOPTS only for images created in imgfmt format.
+    if parsed.f == imgfmt and 'IMGOPTS' in os.environ:
+        result += ['-o', os.environ['IMGOPTS']]
+
+    result += remaining
+
+    return result
+
 def qemu_img_pipe_and_status(*args: str) -> Tuple[str, int]:
     """
     Run qemu-img and return both its output and its exit code
     """
-    full_args = qemu_img_args + list(args)
+    full_args = qemu_img_args + qemu_img_create_prepare_args(list(args))
     return qemu_tool_pipe_and_status('qemu-img', full_args)
 
 def qemu_img(*args: str) -> int:
-- 
2.34.1

[PULL 07/24] iotests: drop qemu_img_verbose() helper

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

qemu_img_verbose() has a drawback of not going through generic
qemu_img_pipe_and_status(). qemu_img_verbose() is not very popular, so
update the only two users to qemu_img_log() and drop qemu_img_verbose()
at all.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223160144.1097696-6-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/044        | 5 +++--
 tests/qemu-iotests/044.out    | 1 +
 tests/qemu-iotests/209        | 7 ++++---
 tests/qemu-iotests/209.out    | 2 ++
 tests/qemu-iotests/iotests.py | 8 --------
 5 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/tests/qemu-iotests/044 b/tests/qemu-iotests/044
index d696e6442a..a5ee9a7ded 100755
--- a/tests/qemu-iotests/044
+++ b/tests/qemu-iotests/044
@@ -24,7 +24,7 @@ import os
 import qcow2
 from qcow2 import QcowHeader
 import iotests
-from iotests import qemu_img, qemu_img_verbose, qemu_io
+from iotests import qemu_img, qemu_img_log, qemu_io
 import struct
 import subprocess
 import sys
@@ -112,10 +112,11 @@ class TestRefcountTableGrowth(iotests.QMPTestCase):
 
     def test_grow_refcount_table(self):
         qemu_io('-c', 'write 3800M 1M', test_img)
-        qemu_img_verbose('check' , test_img)
+        qemu_img_log('check' , test_img)
         pass
 
 if __name__ == '__main__':
+    iotests.activate_logging()
     iotests.main(supported_fmts=['qcow2'],
                  supported_protocols=['file'],
                  unsupported_imgopts=['refcount_bits'])
diff --git a/tests/qemu-iotests/044.out b/tests/qemu-iotests/044.out
index 703cf3dee1..ff663b17d7 100644
--- a/tests/qemu-iotests/044.out
+++ b/tests/qemu-iotests/044.out
@@ -1,6 +1,7 @@
 No errors were found on the image.
 7292415/33554432 = 21.73% allocated, 0.00% fragmented, 0.00% compressed clusters
 Image end offset: 4296217088
+
 .
 ----------------------------------------------------------------------
 Ran 1 tests
diff --git a/tests/qemu-iotests/209 b/tests/qemu-iotests/209
index ff7efea11b..f6ad08ec42 100755
--- a/tests/qemu-iotests/209
+++ b/tests/qemu-iotests/209
@@ -20,8 +20,8 @@
 #
 
 import iotests
-from iotests import qemu_img_create, qemu_io, qemu_img_verbose, qemu_nbd, \
-                    file_path
+from iotests import qemu_img_create, qemu_io, qemu_img_log, qemu_nbd, \
+                    file_path, log
 
 iotests.script_initialize(supported_fmts=['qcow2'])
 
@@ -33,4 +33,5 @@ qemu_img_create('-f', iotests.imgfmt, disk, '1M')
 qemu_io('-f', iotests.imgfmt, '-c', 'write 0 512K', disk)
 
 qemu_nbd('-k', nbd_sock, '-x', 'exp', '-f', iotests.imgfmt, disk)
-qemu_img_verbose('map', '-f', 'raw', '--output=json', nbd_uri)
+qemu_img_log('map', '-f', 'raw', '--output=json', nbd_uri)
+log('done.')  # avoid new line at the end of output file
diff --git a/tests/qemu-iotests/209.out b/tests/qemu-iotests/209.out
index f27be3fa7b..515906ac7a 100644
--- a/tests/qemu-iotests/209.out
+++ b/tests/qemu-iotests/209.out
@@ -1,2 +1,4 @@
 [{ "start": 0, "length": 524288, "depth": 0, "present": true, "zero": false, "data": true, "offset": 0},
 { "start": 524288, "length": 524288, "depth": 0, "present": true, "zero": true, "data": false, "offset": 524288}]
+
+done.
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 740f8be36b..cc4bbbcf7b 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -235,14 +235,6 @@ def qemu_img_measure(*args):
 def qemu_img_check(*args):
     return json.loads(qemu_img_pipe("check", "--output", "json", *args))
 
-def qemu_img_verbose(*args):
-    '''Run qemu-img without suppressing its output and return the exit code'''
-    exitcode = subprocess.call(qemu_img_args + list(args))
-    if exitcode < 0:
-        sys.stderr.write('qemu-img received signal %i: %s\n'
-                         % (-exitcode, ' '.join(qemu_img_args + list(args))))
-    return exitcode
-
 def qemu_img_pipe(*args: str) -> str:
     '''Run qemu-img and return its output'''
     return qemu_img_pipe_and_status(*args)[0]
-- 
2.34.1

[PULL 08/24] iotests.py: rewrite default luks support in qemu_img

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

Move the logic to more generic qemu_img_pipe_and_status(). Also behave
better when we have several -o options. And reuse argument parser of
course.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223160144.1097696-7-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/iotests.py | 36 +++++++++++++++++------------------
 1 file changed, 17 insertions(+), 19 deletions(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index cc4bbbcf7b..c382c527c8 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -168,9 +168,13 @@ def qemu_img_create_prepare_args(args: List[str]) -> List[str]:
     args = args[1:]
 
     p = argparse.ArgumentParser(allow_abbrev=False)
+    # -o option may be specified several times
+    p.add_argument('-o', action='append', default=[])
     p.add_argument('-f')
     parsed, remaining = p.parse_known_args(args)
 
+    opts_list = parsed.o
+
     result = ['create']
     if parsed.f is not None:
         result += ['-f', parsed.f]
@@ -179,8 +183,18 @@ def qemu_img_create_prepare_args(args: List[str]) -> List[str]:
     # like extended_l2 or compression_type for qcow2. Test may want to create
     # additional images in other formats that doesn't support these options.
     # So, use IMGOPTS only for images created in imgfmt format.
-    if parsed.f == imgfmt and 'IMGOPTS' in os.environ:
-        result += ['-o', os.environ['IMGOPTS']]
+    imgopts = os.environ.get('IMGOPTS')
+    if imgopts and parsed.f == imgfmt:
+        opts_list.insert(0, imgopts)
+
+    # default luks support
+    if parsed.f == 'luks' and \
+            all('key-secret' not in opts for opts in opts_list):
+        result += ['--object', luks_default_secret_object]
+        opts_list.append(luks_default_key_secret_opt)
+
+    for opts in opts_list:
+        result += ['-o', opts]
 
     result += remaining
 
@@ -211,23 +225,7 @@ def ordered_qmp(qmsg, conv_keys=True):
     return qmsg
 
 def qemu_img_create(*args):
-    args = list(args)
-
-    # default luks support
-    if '-f' in args and args[args.index('-f') + 1] == 'luks':
-        if '-o' in args:
-            i = args.index('-o')
-            if 'key-secret' not in args[i + 1]:
-                args[i + 1].append(luks_default_key_secret_opt)
-                args.insert(i + 2, '--object')
-                args.insert(i + 3, luks_default_secret_object)
-        else:
-            args = ['-o', luks_default_key_secret_opt,
-                    '--object', luks_default_secret_object] + args
-
-    args.insert(0, 'create')
-
-    return qemu_img(*args)
+    return qemu_img('create', *args)
 
 def qemu_img_measure(*args):
     return json.loads(qemu_img_pipe("measure", "--output", "json", *args))
-- 
2.34.1

[PULL 09/24] iotest 303: explicit compression type

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

The test prints qcow2 header fields which depends on chosen compression
type. So, let's be explicit in what compression type we want and
independent of IMGOPTS. Test both existing compression types.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20211223160144.1097696-8-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/303     | 25 ++++++++++++++++---------
 tests/qemu-iotests/303.out | 30 +++++++++++++++++++++++++++++-
 2 files changed, 45 insertions(+), 10 deletions(-)

diff --git a/tests/qemu-iotests/303 b/tests/qemu-iotests/303
index 475cb5428d..16c2e10827 100755
--- a/tests/qemu-iotests/303
+++ b/tests/qemu-iotests/303
@@ -54,12 +54,19 @@ def add_bitmap(num, begin, end, disabled):
     log('')
 
 
-qemu_img_create('-f', iotests.imgfmt, disk, '10M')
-
-add_bitmap(1, 0, 6, False)
-add_bitmap(2, 6, 8, True)
-dump = ['./qcow2.py', disk, 'dump-header']
-subprocess.run(dump)
-# Dump the metadata in JSON format
-dump.append('-j')
-subprocess.run(dump)
+def test(compression_type: str, json_output: bool) -> None:
+    qemu_img_create('-f', iotests.imgfmt,
+                    '-o', f'compression_type={compression_type}',
+                    disk, '10M')
+    add_bitmap(1, 0, 6, False)
+    add_bitmap(2, 6, 8, True)
+
+    cmd = ['./qcow2.py', disk, 'dump-header']
+    if json_output:
+        cmd.append('-j')
+
+    subprocess.run(cmd)
+
+
+test('zlib', False)
+test('zstd', True)
diff --git a/tests/qemu-iotests/303.out b/tests/qemu-iotests/303.out
index 7c16998587..b3c70827b7 100644
--- a/tests/qemu-iotests/303.out
+++ b/tests/qemu-iotests/303.out
@@ -80,6 +80,34 @@ extra_data_size           0
 Bitmap table   type            size         offset
 0              all-zeroes      0            0
 
+Add bitmap 1
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+wrote 1048576/1048576 bytes at offset 1048576
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+wrote 1048576/1048576 bytes at offset 2097152
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+wrote 1048576/1048576 bytes at offset 3145728
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+wrote 1048576/1048576 bytes at offset 4194304
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+wrote 1048576/1048576 bytes at offset 5242880
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+
+Add bitmap 2
+wrote 1048576/1048576 bytes at offset 6291456
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+wrote 1048576/1048576 bytes at offset 7340032
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+
 {
     "magic": 1363560955,
     "version": 3,
@@ -94,7 +122,7 @@ Bitmap table   type            size         offset
     "refcount_table_clusters": 1,
     "nb_snapshots": 0,
     "snapshot_offset": 0,
-    "incompatible_features": 0,
+    "incompatible_features": 8,
     "compatible_features": 0,
     "autoclear_features": 1,
     "refcount_order": 4,
-- 
2.34.1

[PULL 10/24] iotest 065: explicit compression type

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

The test checks different options. It of course fails if set
IMGOPTS='compression_type=zstd'. So, let's be explicit in what
compression type we want and independent of IMGOPTS. Test both existing
compression types.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223160144.1097696-9-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/065 | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/tests/qemu-iotests/065 b/tests/qemu-iotests/065
index dc7716275f..f7c1b68dad 100755
--- a/tests/qemu-iotests/065
+++ b/tests/qemu-iotests/065
@@ -88,7 +88,7 @@ class TestQMP(TestImageInfoSpecific):
 
 class TestQCow2(TestQemuImgInfo):
     '''Testing a qcow2 version 2 image'''
-    img_options = 'compat=0.10'
+    img_options = 'compat=0.10,compression_type=zlib'
     json_compare = { 'compat': '0.10', 'refcount-bits': 16,
                      'compression-type': 'zlib' }
     human_compare = [ 'compat: 0.10', 'compression type: zlib',
@@ -96,17 +96,17 @@ class TestQCow2(TestQemuImgInfo):
 
 class TestQCow3NotLazy(TestQemuImgInfo):
     '''Testing a qcow2 version 3 image with lazy refcounts disabled'''
-    img_options = 'compat=1.1,lazy_refcounts=off'
+    img_options = 'compat=1.1,lazy_refcounts=off,compression_type=zstd'
     json_compare = { 'compat': '1.1', 'lazy-refcounts': False,
                      'refcount-bits': 16, 'corrupt': False,
-                     'compression-type': 'zlib', 'extended-l2': False }
-    human_compare = [ 'compat: 1.1', 'compression type: zlib',
+                     'compression-type': 'zstd', 'extended-l2': False }
+    human_compare = [ 'compat: 1.1', 'compression type: zstd',
                       'lazy refcounts: false', 'refcount bits: 16',
                       'corrupt: false', 'extended l2: false' ]
 
 class TestQCow3Lazy(TestQemuImgInfo):
     '''Testing a qcow2 version 3 image with lazy refcounts enabled'''
-    img_options = 'compat=1.1,lazy_refcounts=on'
+    img_options = 'compat=1.1,lazy_refcounts=on,compression_type=zlib'
     json_compare = { 'compat': '1.1', 'lazy-refcounts': True,
                      'refcount-bits': 16, 'corrupt': False,
                      'compression-type': 'zlib', 'extended-l2': False }
@@ -117,7 +117,7 @@ class TestQCow3Lazy(TestQemuImgInfo):
 class TestQCow3NotLazyQMP(TestQMP):
     '''Testing a qcow2 version 3 image with lazy refcounts disabled, opening
        with lazy refcounts enabled'''
-    img_options = 'compat=1.1,lazy_refcounts=off'
+    img_options = 'compat=1.1,lazy_refcounts=off,compression_type=zlib'
     qemu_options = 'lazy-refcounts=on'
     compare = { 'compat': '1.1', 'lazy-refcounts': False,
                 'refcount-bits': 16, 'corrupt': False,
@@ -127,11 +127,11 @@ class TestQCow3NotLazyQMP(TestQMP):
 class TestQCow3LazyQMP(TestQMP):
     '''Testing a qcow2 version 3 image with lazy refcounts enabled, opening
        with lazy refcounts disabled'''
-    img_options = 'compat=1.1,lazy_refcounts=on'
+    img_options = 'compat=1.1,lazy_refcounts=on,compression_type=zstd'
     qemu_options = 'lazy-refcounts=off'
     compare = { 'compat': '1.1', 'lazy-refcounts': True,
                 'refcount-bits': 16, 'corrupt': False,
-                'compression-type': 'zlib', 'extended-l2': False }
+                'compression-type': 'zstd', 'extended-l2': False }
 
 TestImageInfoSpecific = None
 TestQemuImgInfo = None
-- 
2.34.1

[PULL 11/24] iotests.py: filter out successful output of qemu-img create

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

The only "feature" of this "Formatting ..." line is that we have to
update it every time we add new option. Let's drop it.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223160144.1097696-10-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/149.out    | 21 ---------------------
 tests/qemu-iotests/237.out    |  3 ---
 tests/qemu-iotests/255.out    |  4 ----
 tests/qemu-iotests/274.out    | 29 -----------------------------
 tests/qemu-iotests/280.out    |  1 -
 tests/qemu-iotests/296.out    | 10 +++-------
 tests/qemu-iotests/iotests.py | 10 ++++++++--
 7 files changed, 11 insertions(+), 67 deletions(-)

diff --git a/tests/qemu-iotests/149.out b/tests/qemu-iotests/149.out
index 6877ab6c4a..ab879596ce 100644
--- a/tests/qemu-iotests/149.out
+++ b/tests/qemu-iotests/149.out
@@ -61,7 +61,6 @@ unlink TEST_DIR/luks-aes-256-xts-plain64-sha1.img
 # ================= qemu-img aes-256-xts-plain64-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-256-xts-plain64-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain64-sha1.img qiotest-145-aes-256-xts-plain64-sha1
@@ -181,7 +180,6 @@ unlink TEST_DIR/luks-twofish-256-xts-plain64-sha1.img
 # ================= qemu-img twofish-256-xts-plain64-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=twofish-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-twofish-256-xts-plain64-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-twofish-256-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=twofish-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-twofish-256-xts-plain64-sha1.img qiotest-145-twofish-256-xts-plain64-sha1
@@ -301,7 +299,6 @@ unlink TEST_DIR/luks-serpent-256-xts-plain64-sha1.img
 # ================= qemu-img serpent-256-xts-plain64-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=serpent-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-serpent-256-xts-plain64-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-serpent-256-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=serpent-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-serpent-256-xts-plain64-sha1.img qiotest-145-serpent-256-xts-plain64-sha1
@@ -421,7 +418,6 @@ unlink TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img
 # ================= qemu-img cast5-128-cbc-plain64-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=cast5-128,cipher-mode=cbc,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=cast5-128 cipher-mode=cbc ivgen-alg=plain64 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img qiotest-145-cast5-128-cbc-plain64-sha1
@@ -542,7 +538,6 @@ unlink TEST_DIR/luks-aes-256-cbc-plain-sha1.img
 # ================= qemu-img aes-256-cbc-plain-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=plain,hash-alg=sha1 TEST_DIR/luks-aes-256-cbc-plain-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-cbc-plain-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=plain hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-plain-sha1.img qiotest-145-aes-256-cbc-plain-sha1
@@ -662,7 +657,6 @@ unlink TEST_DIR/luks-aes-256-cbc-plain64-sha1.img
 # ================= qemu-img aes-256-cbc-plain64-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-256-cbc-plain64-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-cbc-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=plain64 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-plain64-sha1.img qiotest-145-aes-256-cbc-plain64-sha1
@@ -782,7 +776,6 @@ unlink TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img
 # ================= qemu-img aes-256-cbc-essiv-sha256-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=essiv,hash-alg=sha1,ivgen-hash-alg=sha256 TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=essiv ivgen-hash-alg=sha256 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img qiotest-145-aes-256-cbc-essiv-sha256-sha1
@@ -902,7 +895,6 @@ unlink TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img
 # ================= qemu-img aes-256-xts-essiv-sha256-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=essiv,hash-alg=sha1,ivgen-hash-alg=sha256 TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=essiv ivgen-hash-alg=sha256 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img qiotest-145-aes-256-xts-essiv-sha256-sha1
@@ -1022,7 +1014,6 @@ unlink TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img
 # ================= qemu-img aes-128-xts-plain64-sha256-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-128,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-128 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img qiotest-145-aes-128-xts-plain64-sha256-sha1
@@ -1142,7 +1133,6 @@ unlink TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img
 # ================= qemu-img aes-192-xts-plain64-sha256-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-192,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-192 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img qiotest-145-aes-192-xts-plain64-sha256-sha1
@@ -1262,7 +1252,6 @@ unlink TEST_DIR/luks-twofish-128-xts-plain64-sha1.img
 # ================= qemu-img twofish-128-xts-plain64-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=twofish-128,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-twofish-128-xts-plain64-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-twofish-128-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=twofish-128 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-twofish-128-xts-plain64-sha1.img qiotest-145-twofish-128-xts-plain64-sha1
@@ -1383,7 +1372,6 @@ unlink TEST_DIR/luks-serpent-128-xts-plain64-sha1.img
 # ================= qemu-img serpent-128-xts-plain64-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=serpent-128,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-serpent-128-xts-plain64-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-serpent-128-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=serpent-128 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-serpent-128-xts-plain64-sha1.img qiotest-145-serpent-128-xts-plain64-sha1
@@ -1503,7 +1491,6 @@ unlink TEST_DIR/luks-serpent-192-xts-plain64-sha1.img
 # ================= qemu-img serpent-192-xts-plain64-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=serpent-192,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-serpent-192-xts-plain64-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-serpent-192-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=serpent-192 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-serpent-192-xts-plain64-sha1.img qiotest-145-serpent-192-xts-plain64-sha1
@@ -1625,7 +1612,6 @@ unlink TEST_DIR/luks-aes-256-xts-plain64-sha224.img
 # ================= qemu-img aes-256-xts-plain64-sha224 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha224 TEST_DIR/luks-aes-256-xts-plain64-sha224.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-xts-plain64-sha224.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha224 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain64-sha224.img qiotest-145-aes-256-xts-plain64-sha224
@@ -1745,7 +1731,6 @@ unlink TEST_DIR/luks-aes-256-xts-plain64-sha256.img
 # ================= qemu-img aes-256-xts-plain64-sha256 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha256 TEST_DIR/luks-aes-256-xts-plain64-sha256.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-xts-plain64-sha256.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha256 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain64-sha256.img qiotest-145-aes-256-xts-plain64-sha256
@@ -1865,7 +1850,6 @@ unlink TEST_DIR/luks-aes-256-xts-plain64-sha384.img
 # ================= qemu-img aes-256-xts-plain64-sha384 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha384 TEST_DIR/luks-aes-256-xts-plain64-sha384.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-xts-plain64-sha384.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha384 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain64-sha384.img qiotest-145-aes-256-xts-plain64-sha384
@@ -1985,7 +1969,6 @@ unlink TEST_DIR/luks-aes-256-xts-plain64-sha512.img
 # ================= qemu-img aes-256-xts-plain64-sha512 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha512 TEST_DIR/luks-aes-256-xts-plain64-sha512.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-xts-plain64-sha512.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha512 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain64-sha512.img qiotest-145-aes-256-xts-plain64-sha512
@@ -2105,7 +2088,6 @@ unlink TEST_DIR/luks-aes-256-xts-plain64-ripemd160.img
 # ================= qemu-img aes-256-xts-plain64-ripemd160 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=ripemd160 TEST_DIR/luks-aes-256-xts-plain64-ripemd160.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-xts-plain64-ripemd160.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=ripemd160 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain64-ripemd160.img qiotest-145-aes-256-xts-plain64-ripemd160
@@ -2299,7 +2281,6 @@ unlink TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img
 # ================= qemu-img aes-256-xts-plain-sha1-pwallslots =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=c2xvdDE=,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain,hash-alg=sha1 TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img qiotest-145-aes-256-xts-plain-sha1-pwallslots
@@ -2419,7 +2400,6 @@ unlink TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img
 # ================= qemu-img aes-256-cbc-essiv-auto-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=essiv,hash-alg=sha1 TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=essiv hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img qiotest-145-aes-256-cbc-essiv-auto-sha1
@@ -2539,7 +2519,6 @@ unlink TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img
 # ================= qemu-img aes-256-cbc-plain64-sha256-sha1 =================
 # Create image
 qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=plain64,hash-alg=sha1,ivgen-hash-alg=sha256 TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img 4194304M
-Formatting 'TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=plain64 ivgen-hash-alg=sha256 hash-alg=sha1 iter-time=10
 
 # Open dev
 sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img qiotest-145-aes-256-cbc-plain64-sha256-sha1
diff --git a/tests/qemu-iotests/237.out b/tests/qemu-iotests/237.out
index 2f09ff5512..aeb9724492 100644
--- a/tests/qemu-iotests/237.out
+++ b/tests/qemu-iotests/237.out
@@ -129,11 +129,8 @@ Job failed: Cannot find device='this doesn't exist' nor node-name='this doesn't
 
 === Other subformats ===
 
-Formatting 'TEST_DIR/PID-t.vmdk.1', fmt=vmdk size=0 compat6=off hwversion=undefined
 
-Formatting 'TEST_DIR/PID-t.vmdk.2', fmt=vmdk size=0 compat6=off hwversion=undefined
 
-Formatting 'TEST_DIR/PID-t.vmdk.3', fmt=vmdk size=0 compat6=off hwversion=undefined
 
 == Missing extent ==
 
diff --git a/tests/qemu-iotests/255.out b/tests/qemu-iotests/255.out
index 33b7f22de3..11a05a5213 100644
--- a/tests/qemu-iotests/255.out
+++ b/tests/qemu-iotests/255.out
@@ -3,9 +3,7 @@ Finishing a commit job with background reads
 
 === Create backing chain and start VM ===
 
-Formatting 'TEST_DIR/PID-t.qcow2.mid', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=134217728 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-t.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=134217728 lazy_refcounts=off refcount_bits=16
 
 === Start background read requests ===
 
@@ -23,9 +21,7 @@ Closing the VM while a job is being cancelled
 
 === Create images and start VM ===
 
-Formatting 'TEST_DIR/PID-src.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=134217728 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-dst.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=134217728 lazy_refcounts=off refcount_bits=16
 
 wrote 1048576/1048576 bytes at offset 0
 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
diff --git a/tests/qemu-iotests/274.out b/tests/qemu-iotests/274.out
index 16a95a4850..1d2928e14d 100644
--- a/tests/qemu-iotests/274.out
+++ b/tests/qemu-iotests/274.out
@@ -1,9 +1,6 @@
 == Commit tests ==
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=2097152 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-mid', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=1048576 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=2097152 backing_file=TEST_DIR/PID-mid backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 2097152/2097152 bytes at offset 0
 2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -66,11 +63,8 @@ read 1048576/1048576 bytes at offset 1048576
 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 
 === Testing HMP commit (top -> mid) ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=2097152 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-mid', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=1048576 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=2097152 backing_file=TEST_DIR/PID-mid backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 2097152/2097152 bytes at offset 0
 2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -98,11 +92,8 @@ read 1048576/1048576 bytes at offset 1048576
 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 
 === Testing QMP active commit (top -> mid) ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=2097152 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-mid', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=1048576 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=2097152 backing_file=TEST_DIR/PID-mid backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 2097152/2097152 bytes at offset 0
 2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -136,11 +127,8 @@ read 1048576/1048576 bytes at offset 1048576
 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 
 === Testing qemu-img commit (top -> base) ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=2097152 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-mid', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=1048576 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=2097152 backing_file=TEST_DIR/PID-mid backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 2097152/2097152 bytes at offset 0
 2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -166,11 +154,8 @@ read 1048576/1048576 bytes at offset 1048576
 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 
 === Testing QMP active commit (top -> base) ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=2097152 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-mid', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=1048576 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=2097152 backing_file=TEST_DIR/PID-mid backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 2097152/2097152 bytes at offset 0
 2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -205,9 +190,7 @@ read 1048576/1048576 bytes at offset 1048576
 
 == Resize tests ==
 === preallocation=off ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=6442450944 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=1073741824 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 65536/65536 bytes at offset 5368709120
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -224,9 +207,7 @@ read 65536/65536 bytes at offset 5368709120
 { "start": 1073741824, "length": 7516192768, "depth": 0, "present": true, "zero": true, "data": false}]
 
 === preallocation=metadata ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=34359738368 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=32212254720 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 65536/65536 bytes at offset 33285996544
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -248,9 +229,7 @@ read 65536/65536 bytes at offset 33285996544
 { "start": 34896609280, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "offset": 2685075456}]
 
 === preallocation=falloc ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=10485760 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=5242880 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 65536/65536 bytes at offset 9437184
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -267,9 +246,7 @@ read 65536/65536 bytes at offset 9437184
 { "start": 5242880, "length": 10485760, "depth": 0, "present": true, "zero": false, "data": true, "offset": 327680}]
 
 === preallocation=full ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=16777216 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=8388608 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 65536/65536 bytes at offset 11534336
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -286,9 +263,7 @@ read 65536/65536 bytes at offset 11534336
 { "start": 8388608, "length": 4194304, "depth": 0, "present": true, "zero": false, "data": true, "offset": 327680}]
 
 === preallocation=off ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=393216 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=259072 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 65536/65536 bytes at offset 259072
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -306,9 +281,7 @@ read 65536/65536 bytes at offset 259072
 { "start": 262144, "length": 262144, "depth": 0, "present": true, "zero": true, "data": false}]
 
 === preallocation=off ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=409600 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=262144 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 65536/65536 bytes at offset 344064
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -325,9 +298,7 @@ read 65536/65536 bytes at offset 344064
 { "start": 262144, "length": 262144, "depth": 0, "present": true, "zero": true, "data": false}]
 
 === preallocation=off ===
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=524288 lazy_refcounts=off refcount_bits=16
 
-Formatting 'TEST_DIR/PID-top', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=262144 backing_file=TEST_DIR/PID-base backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
 
 wrote 65536/65536 bytes at offset 446464
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
diff --git a/tests/qemu-iotests/280.out b/tests/qemu-iotests/280.out
index 09a0f1a7cb..e39164c579 100644
--- a/tests/qemu-iotests/280.out
+++ b/tests/qemu-iotests/280.out
@@ -1,4 +1,3 @@
-Formatting 'TEST_DIR/PID-base', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=67108864 lazy_refcounts=off refcount_bits=16
 
 === Launch VM ===
 Enabling migration QMP events on VM...
diff --git a/tests/qemu-iotests/296.out b/tests/qemu-iotests/296.out
index 6c69735604..42205cc981 100644
--- a/tests/qemu-iotests/296.out
+++ b/tests/qemu-iotests/296.out
@@ -1,4 +1,3 @@
-Formatting 'TEST_DIR/test.img', fmt=luks size=1048576 key-secret=keysec0 iter-time=10
 
 {"execute": "job-dismiss", "arguments": {"id": "job0"}}
 {"return": {}}
@@ -13,8 +12,7 @@ Job failed: Failed to get shared "consistent read" lock
 qemu-img: Failed to get shared "consistent read" lock
 Is another process using the image [TEST_DIR/test.img]?
 
-.Formatting 'TEST_DIR/test.img', fmt=luks size=1048576 key-secret=keysec0 iter-time=10
-
+.
 Job failed: Block node is read-only
 {"execute": "job-dismiss", "arguments": {"id": "job0"}}
 {"return": {}}
@@ -26,12 +24,10 @@ Job failed: Failed to get shared "consistent read" lock
 {"return": {}}
 {"execute": "job-dismiss", "arguments": {"id": "job0"}}
 {"return": {}}
-.Formatting 'TEST_DIR/test.img', fmt=luks size=1048576 key-secret=keysec0 iter-time=10
-
+.
 {"return": {}}
 {"error": {"class": "GenericError", "desc": "Failed to get \"write\" lock"}}
-.Formatting 'TEST_DIR/test.img', fmt=luks size=1048576 key-secret=keysec0 iter-time=10
-
+.
 {"return": {}}
 {"return": {}}
 .
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index c382c527c8..65780c6098 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -150,7 +150,9 @@ def qemu_tool_popen(args: Sequence[str],
 
 
 def qemu_tool_pipe_and_status(tool: str, args: Sequence[str],
-                              connect_stderr: bool = True) -> Tuple[str, int]:
+                              connect_stderr: bool = True,
+                              drop_successful_output: bool = False) \
+        -> Tuple[str, int]:
     """
     Run a tool and return both its output and its exit code
     """
@@ -160,6 +162,8 @@ def qemu_tool_pipe_and_status(tool: str, args: Sequence[str],
             cmd = ' '.join(args)
             sys.stderr.write(f'{tool} received signal \
                                {-subp.returncode}: {cmd}\n')
+        if drop_successful_output and subp.returncode == 0:
+            output = ''
         return (output, subp.returncode)
 
 def qemu_img_create_prepare_args(args: List[str]) -> List[str]:
@@ -204,8 +208,10 @@ def qemu_img_pipe_and_status(*args: str) -> Tuple[str, int]:
     """
     Run qemu-img and return both its output and its exit code
     """
+    is_create = bool(args and args[0] == 'create')
     full_args = qemu_img_args + qemu_img_create_prepare_args(list(args))
-    return qemu_tool_pipe_and_status('qemu-img', full_args)
+    return qemu_tool_pipe_and_status('qemu-img', full_args,
+                                     drop_successful_output=is_create)
 
 def qemu_img(*args: str) -> int:
     '''Run qemu-img and return the exit code'''
-- 
2.34.1

[PULL 12/24] iotests.py: filter compression type out

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

We want iotests pass with both the default zlib compression and with
IMGOPTS='compression_type=zstd'.

Actually the only test that is interested in real compression type in
test output is 287 (test for qcow2 compression type) and it's in bash.
So for now we can safely filter out compression type in all qcow2
tests.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223160144.1097696-11-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/206.out    | 10 +++++-----
 tests/qemu-iotests/242.out    | 10 +++++-----
 tests/qemu-iotests/274.out    | 10 +++++-----
 tests/qemu-iotests/iotests.py |  2 ++
 4 files changed, 17 insertions(+), 15 deletions(-)

diff --git a/tests/qemu-iotests/206.out b/tests/qemu-iotests/206.out
index 80cd274223..7e95694777 100644
--- a/tests/qemu-iotests/206.out
+++ b/tests/qemu-iotests/206.out
@@ -18,7 +18,7 @@ virtual size: 128 MiB (134217728 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -42,7 +42,7 @@ virtual size: 64 MiB (67108864 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -66,7 +66,7 @@ virtual size: 32 MiB (33554432 bytes)
 cluster_size: 2097152
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: true
     refcount bits: 1
     corrupt: false
@@ -92,7 +92,7 @@ backing file: TEST_IMG.base
 backing file format: IMGFMT
 Format specific information:
     compat: 0.10
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     refcount bits: 16
 
 === Successful image creation (encrypted) ===
@@ -109,7 +109,7 @@ encrypted: yes
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     encrypt:
diff --git a/tests/qemu-iotests/242.out b/tests/qemu-iotests/242.out
index 3759c99284..ce231424a7 100644
--- a/tests/qemu-iotests/242.out
+++ b/tests/qemu-iotests/242.out
@@ -12,7 +12,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -34,7 +34,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
@@ -68,7 +68,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
@@ -110,7 +110,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
@@ -161,7 +161,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
diff --git a/tests/qemu-iotests/274.out b/tests/qemu-iotests/274.out
index 1d2928e14d..1ce40d839a 100644
--- a/tests/qemu-iotests/274.out
+++ b/tests/qemu-iotests/274.out
@@ -50,7 +50,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -79,7 +79,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -114,7 +114,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -141,7 +141,7 @@ virtual size: 2 MiB (2097152 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -176,7 +176,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 65780c6098..8cdb381f2a 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -497,6 +497,8 @@ def filter_img_info(output, filename):
                       'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX',
                       line)
         line = re.sub('cid: [0-9]+', 'cid: XXXXXXXXXX', line)
+        line = re.sub('(compression type: )(zlib|zstd)', r'\1COMPRESSION_TYPE',
+                      line)
         lines.append(line)
     return '\n'.join(lines)
 
-- 
2.34.1

[PULL 13/24] iotest 302: use img_info_log() helper

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

Instead of qemu_img_log("info", ..) use generic helper img_info_log().

img_info_log() has smarter logic. For example it use filter_img_info()
to filter output, which in turns filter a compression type. So it will
help us in future when we implement a possibility to use zstd
compression by default (with help of some runtime config file or maybe
build option). For now to test you should recompile qemu with a small
addition into block/qcow2.c before
"if (qcow2_opts->has_compression_type":

    if (!qcow2_opts->has_compression_type && version >= 3) {
        qcow2_opts->has_compression_type = true;
        qcow2_opts->compression_type = QCOW2_COMPRESSION_TYPE_ZSTD;
    }

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20211223160144.1097696-12-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/302     | 4 +++-
 tests/qemu-iotests/302.out | 7 +++----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/tests/qemu-iotests/302 b/tests/qemu-iotests/302
index 5695af4914..a6d79e727b 100755
--- a/tests/qemu-iotests/302
+++ b/tests/qemu-iotests/302
@@ -34,6 +34,7 @@ from iotests import (
     qemu_img_measure,
     qemu_io,
     qemu_nbd_popen,
+    img_info_log,
 )
 
 iotests.script_initialize(supported_fmts=["qcow2"])
@@ -88,6 +89,7 @@ with tarfile.open(tar_file, "w") as tar:
             tar_file):
 
         iotests.log("=== Target image info ===")
+        # Not img_info_log as it enforces imgfmt, but now we print info on raw
         qemu_img_log("info", nbd_uri)
 
         qemu_img(
@@ -99,7 +101,7 @@ with tarfile.open(tar_file, "w") as tar:
             nbd_uri)
 
         iotests.log("=== Converted image info ===")
-        qemu_img_log("info", nbd_uri)
+        img_info_log(nbd_uri)
 
         iotests.log("=== Converted image check ===")
         qemu_img_log("check", nbd_uri)
diff --git a/tests/qemu-iotests/302.out b/tests/qemu-iotests/302.out
index e2f6077e83..3e7c281b91 100644
--- a/tests/qemu-iotests/302.out
+++ b/tests/qemu-iotests/302.out
@@ -6,14 +6,13 @@ virtual size: 448 KiB (458752 bytes)
 disk size: unavailable
 
 === Converted image info ===
-image: nbd+unix:///exp?socket=SOCK_DIR/PID-nbd-sock
-file format: qcow2
+image: TEST_IMG
+file format: IMGFMT
 virtual size: 1 GiB (1073741824 bytes)
-disk size: unavailable
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
-- 
2.34.1

[PULL 14/24] qcow2: simple case support for downgrading of qcow2 images with zstd

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

If image doesn't have any compressed cluster we can easily switch to
zlib compression, which may allow to downgrade the image.

That's mostly needed to support IMGOPTS='compression_type=zstd' in some
iotests which do qcow2 downgrade.

While being here also fix checkpatch complain against '#' in printf
formatting.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20211223160144.1097696-13-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 block/qcow2.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 56 insertions(+), 2 deletions(-)

diff --git a/block/qcow2.c b/block/qcow2.c
index d509016756..c8115e1cba 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -5279,6 +5279,38 @@ static int qcow2_load_vmstate(BlockDriverState *bs, QEMUIOVector *qiov,
     return bs->drv->bdrv_co_preadv_part(bs, offset, qiov->size, qiov, 0, 0);
 }
 
+static int qcow2_has_compressed_clusters(BlockDriverState *bs)
+{
+    int64_t offset = 0;
+    int64_t bytes = bdrv_getlength(bs);
+
+    if (bytes < 0) {
+        return bytes;
+    }
+
+    while (bytes != 0) {
+        int ret;
+        QCow2SubclusterType type;
+        unsigned int cur_bytes = MIN(INT_MAX, bytes);
+        uint64_t host_offset;
+
+        ret = qcow2_get_host_offset(bs, offset, &cur_bytes, &host_offset,
+                                    &type);
+        if (ret < 0) {
+            return ret;
+        }
+
+        if (type == QCOW2_SUBCLUSTER_COMPRESSED) {
+            return 1;
+        }
+
+        offset += cur_bytes;
+        bytes -= cur_bytes;
+    }
+
+    return 0;
+}
+
 /*
  * Downgrades an image's version. To achieve this, any incompatible features
  * have to be removed.
@@ -5336,9 +5368,10 @@ static int qcow2_downgrade(BlockDriverState *bs, int target_version,
      * the first place; if that happens nonetheless, returning -ENOTSUP is the
      * best thing to do anyway */
 
-    if (s->incompatible_features) {
+    if (s->incompatible_features & ~QCOW2_INCOMPAT_COMPRESSION) {
         error_setg(errp, "Cannot downgrade an image with incompatible features "
-                   "%#" PRIx64 " set", s->incompatible_features);
+                   "0x%" PRIx64 " set",
+                   s->incompatible_features & ~QCOW2_INCOMPAT_COMPRESSION);
         return -ENOTSUP;
     }
 
@@ -5356,6 +5389,27 @@ static int qcow2_downgrade(BlockDriverState *bs, int target_version,
         return ret;
     }
 
+    if (s->incompatible_features & QCOW2_INCOMPAT_COMPRESSION) {
+        ret = qcow2_has_compressed_clusters(bs);
+        if (ret < 0) {
+            error_setg(errp, "Failed to check block status");
+            return -EINVAL;
+        }
+        if (ret) {
+            error_setg(errp, "Cannot downgrade an image with zstd compression "
+                       "type and existing compressed clusters");
+            return -ENOTSUP;
+        }
+        /*
+         * No compressed clusters for now, so just chose default zlib
+         * compression.
+         */
+        s->incompatible_features &= ~QCOW2_INCOMPAT_COMPRESSION;
+        s->compression_type = QCOW2_COMPRESSION_TYPE_ZLIB;
+    }
+
+    assert(s->incompatible_features == 0);
+
     s->qcow_version = target_version;
     ret = qcow2_update_header(bs);
     if (ret < 0) {
-- 
2.34.1

[PULL 15/24] iotests/common.rc: introduce _qcow2_dump_header helper

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

We'll use it in tests instead of explicit qcow2.py. Then we are going
to add some filtering in _qcow2_dump_header.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20211223160144.1097696-14-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/common.rc | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index d8582454de..5dea310ea0 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -996,5 +996,15 @@ _require_one_device_of()
     _notrun "$* not available"
 }
 
+_qcow2_dump_header()
+{
+    img="$1"
+    if [ -z "$img" ]; then
+        img="$TEST_IMG"
+    fi
+
+    $PYTHON qcow2.py "$img" dump-header
+}
+
 # make sure this script returns success
 true
-- 
2.34.1

[PULL 16/24] iotests: massive use _qcow2_dump_header

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

We are going to add filtering in _qcow2_dump_header and want all tests
use it.

The patch is generated by commands:
  cd tests/qemu-iotests
  sed -ie 's/$PYTHON qcow2.py "$TEST_IMG" dump-header\($\| \)/_qcow2_dump_header\1/' ??? tests/*

(the difficulty is to avoid converting dump-header-exts)

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20211223160144.1097696-15-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/031 |  6 +++---
 tests/qemu-iotests/036 |  6 +++---
 tests/qemu-iotests/039 | 20 ++++++++++----------
 tests/qemu-iotests/060 | 20 ++++++++++----------
 tests/qemu-iotests/061 | 36 ++++++++++++++++++------------------
 tests/qemu-iotests/137 |  2 +-
 tests/qemu-iotests/287 |  8 ++++----
 7 files changed, 49 insertions(+), 49 deletions(-)

diff --git a/tests/qemu-iotests/031 b/tests/qemu-iotests/031
index 58b57a0ef2..648112f796 100755
--- a/tests/qemu-iotests/031
+++ b/tests/qemu-iotests/031
@@ -58,21 +58,21 @@ for compat in "compat=0.10" "compat=1.1"; do
     echo
     _make_test_img -o $compat 64M
     $PYTHON qcow2.py "$TEST_IMG" add-header-ext 0x12345678 "This is a test header extension"
-    $PYTHON qcow2.py "$TEST_IMG" dump-header
+    _qcow2_dump_header
     _check_test_img
 
     echo
     echo === Rewrite header with no backing file ===
     echo
     $QEMU_IMG rebase -u -b "" "$TEST_IMG"
-    $PYTHON qcow2.py "$TEST_IMG" dump-header
+    _qcow2_dump_header
     _check_test_img
 
     echo
     echo === Add a backing file and format ===
     echo
     $QEMU_IMG rebase -u -b "/some/backing/file/path" -F host_device "$TEST_IMG"
-    $PYTHON qcow2.py "$TEST_IMG" dump-header
+    _qcow2_dump_header
 done
 
 # success, all done
diff --git a/tests/qemu-iotests/036 b/tests/qemu-iotests/036
index 5e567012a8..f703605e44 100755
--- a/tests/qemu-iotests/036
+++ b/tests/qemu-iotests/036
@@ -58,7 +58,7 @@ $PYTHON qcow2.py "$TEST_IMG" set-feature-bit incompatible 63
 
 # Without feature table
 $PYTHON qcow2.py "$TEST_IMG" del-header-ext 0x6803f857
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep features
+_qcow2_dump_header | grep features
 $PYTHON qcow2.py "$TEST_IMG" dump-header-exts
 _img_info
 
@@ -107,7 +107,7 @@ echo === Create image with unknown autoclear feature bit ===
 echo
 _make_test_img 64M
 $PYTHON qcow2.py "$TEST_IMG" set-feature-bit autoclear 63
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep features
+_qcow2_dump_header | grep features
 $PYTHON qcow2.py "$TEST_IMG" dump-header-exts
 
 echo
@@ -115,7 +115,7 @@ echo === Repair image ===
 echo
 _check_test_img -r all
 
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep features
+_qcow2_dump_header | grep features
 $PYTHON qcow2.py "$TEST_IMG" dump-header-exts
 
 # success, all done
diff --git a/tests/qemu-iotests/039 b/tests/qemu-iotests/039
index 12b2c7fa7b..8e783a8380 100755
--- a/tests/qemu-iotests/039
+++ b/tests/qemu-iotests/039
@@ -59,7 +59,7 @@ _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
 $QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
 
 # The dirty bit must not be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img
 
 echo
@@ -73,7 +73,7 @@ $QEMU_IO -c "write -P 0x5a 0 512" \
     | _filter_qemu_io
 
 # The dirty bit must be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img
 
 echo
@@ -82,7 +82,7 @@ echo "== Read-only access must still work =="
 $QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
 
 # The dirty bit must be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "== Repairing the image file must succeed =="
@@ -90,7 +90,7 @@ echo "== Repairing the image file must succeed =="
 _check_test_img -r all
 
 # The dirty bit must not be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "== Data should still be accessible after repair =="
@@ -108,12 +108,12 @@ $QEMU_IO -c "write -P 0x5a 0 512" \
     | _filter_qemu_io
 
 # The dirty bit must be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
 
 # The dirty bit must not be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "== Creating an image file with lazy_refcounts=off =="
@@ -126,7 +126,7 @@ $QEMU_IO -c "write -P 0x5a 0 512" \
     | _filter_qemu_io
 
 # The dirty bit must not be set since lazy_refcounts=off
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img
 
 echo
@@ -141,7 +141,7 @@ $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IMG commit "$TEST_IMG"
 
 # The dirty bit must not be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 $PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features
 
 _check_test_img
@@ -159,7 +159,7 @@ $QEMU_IO -c "reopen -o lazy-refcounts=on" \
     | _filter_qemu_io
 
 # The dirty bit must be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img
 
 _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
@@ -171,7 +171,7 @@ $QEMU_IO -c "reopen -o lazy-refcounts=off" \
     | _filter_qemu_io
 
 # The dirty bit must not be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img
 
 
diff --git a/tests/qemu-iotests/060 b/tests/qemu-iotests/060
index db26c6b246..d1e3204d4e 100755
--- a/tests/qemu-iotests/060
+++ b/tests/qemu-iotests/060
@@ -80,13 +80,13 @@ poke_file "$TEST_IMG" "$l1_offset" "\x80\x00\x00\x00\x00\x03\x00\x00"
 _check_test_img
 
 # The corrupt bit should not be set anyway
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 # Try to write something, thereby forcing the corrupt bit to be set
 $QEMU_IO -c "$OPEN_RW" -c "write -P 0x2a 0 512" | _filter_qemu_io
 
 # The corrupt bit must now be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 # This information should be available through qemu-img info
 _img_info --format-specific
@@ -114,19 +114,19 @@ poke_file "$TEST_IMG" "$(($rb_offset+8))" "\x00\x01"
 # Redirect new data cluster onto refcount block
 poke_file "$TEST_IMG" "$l2_offset" "\x80\x00\x00\x00\x00\x02\x00\x00"
 _check_test_img
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 $QEMU_IO -c "$OPEN_RW" -c "write -P 0x2a 0 512" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 # Try to fix it
 _check_test_img -r all
 
 # The corrupt bit should be cleared
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 # Look if it's really really fixed
 $QEMU_IO -c "$OPEN_RW" -c "write -P 0x2a 0 512" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "=== Testing cluster data reference into inactive L2 table ==="
@@ -139,13 +139,13 @@ $QEMU_IO -c "$OPEN_RW" -c "write -P 2 0 512" | _filter_qemu_io
 poke_file "$TEST_IMG" "$l2_offset_after_snapshot" \
                       "\x80\x00\x00\x00\x00\x04\x00\x00"
 _check_test_img
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 $QEMU_IO -c "$OPEN_RW" -c "write -P 3 0 512" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img -r all
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 $QEMU_IO -c "$OPEN_RW" -c "write -P 4 0 512" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 # Check data
 $QEMU_IO -c "$OPEN_RO" -c "read -P 4 0 512" | _filter_qemu_io
diff --git a/tests/qemu-iotests/061 b/tests/qemu-iotests/061
index 9507c223bd..70edf1a163 100755
--- a/tests/qemu-iotests/061
+++ b/tests/qemu-iotests/061
@@ -55,9 +55,9 @@ echo "=== Testing version downgrade with zero expansion ==="
 echo
 _make_test_img -o "compat=1.1,lazy_refcounts=on" 64M
 $QEMU_IO -c "write -z 0 128k" "$TEST_IMG" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "compat=0.10" "$TEST_IMG"
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IO -c "read -P 0 0 128k" "$TEST_IMG" | _filter_qemu_io
 _check_test_img
 
@@ -68,10 +68,10 @@ _make_test_img -o "compat=1.1,lazy_refcounts=on" 64M
 $QEMU_IO -c "write -z 0 128k" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IO -c "write -z 32M 128k" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IO -c map "$TEST_IMG" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "compat=0.10" --image-opts \
           driver=qcow2,file.filename=$TEST_IMG,l2-cache-entry-size=4096
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IO -c "read -P 0 0 128k" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IO -c "read -P 0 32M 128k" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IO -c map "$TEST_IMG" | _filter_qemu_io
@@ -84,9 +84,9 @@ _make_test_img -o "compat=1.1,lazy_refcounts=on" 64M
 _NO_VALGRIND \
 $QEMU_IO -c "write -P 0x2a 0 128k" -c flush \
          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "compat=0.10" "$TEST_IMG"
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IO -c "read -P 0x2a 0 128k" "$TEST_IMG" | _filter_qemu_io
 _check_test_img
 
@@ -96,9 +96,9 @@ echo
 _make_test_img -o "compat=1.1" 64M
 $PYTHON qcow2.py "$TEST_IMG" set-feature-bit compatible 42
 $PYTHON qcow2.py "$TEST_IMG" set-feature-bit autoclear 42
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "compat=0.10" "$TEST_IMG"
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 _check_test_img
 
 echo
@@ -106,9 +106,9 @@ echo "=== Testing version upgrade and resize ==="
 echo
 _make_test_img -o "compat=0.10" 64M
 $QEMU_IO -c "write -P 0x2a 42M 64k" "$TEST_IMG" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "compat=1.1,lazy_refcounts=on,size=128M" "$TEST_IMG"
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IO -c "read -P 0x2a 42M 64k" "$TEST_IMG" | _filter_qemu_io
 _check_test_img
 
@@ -120,29 +120,29 @@ $QEMU_IO -c "write -P 0x2a 24M 64k" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IMG snapshot -c foo "$TEST_IMG"
 $QEMU_IMG resize "$TEST_IMG" 64M &&
     echo "unexpected pass"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 $QEMU_IMG amend -o "compat=1.1,size=128M" "$TEST_IMG" ||
     echo "unexpected fail"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 $QEMU_IMG snapshot -c bar "$TEST_IMG"
 $QEMU_IMG resize --shrink "$TEST_IMG" 64M ||
     echo "unexpected fail"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 $QEMU_IMG amend -o "compat=0.10,size=32M" "$TEST_IMG" &&
     echo "unexpected pass"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 $QEMU_IMG snapshot -a bar "$TEST_IMG" ||
     echo "unexpected fail"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 $QEMU_IMG snapshot -d bar "$TEST_IMG"
 $QEMU_IMG amend -o "compat=0.10,size=32M" "$TEST_IMG" ||
     echo "unexpected fail"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 _check_test_img
 
@@ -154,9 +154,9 @@ _make_test_img -o "compat=1.1,lazy_refcounts=on" 64M
 _NO_VALGRIND \
 $QEMU_IO -c "write -P 0x2a 0 128k" -c flush \
          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "lazy_refcounts=off" "$TEST_IMG"
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IO -c "read -P 0x2a 0 128k" "$TEST_IMG" | _filter_qemu_io
 _check_test_img
 
diff --git a/tests/qemu-iotests/137 b/tests/qemu-iotests/137
index 4680d5df3d..52ee135184 100755
--- a/tests/qemu-iotests/137
+++ b/tests/qemu-iotests/137
@@ -140,7 +140,7 @@ $QEMU_IO \
 
 # The dirty bit must not be set
 # (Filter the external data file bit)
-if $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features \
+if _qcow2_dump_header | grep incompatible_features \
     | grep -q '\<0\>'
 then
     echo 'ERROR: Dirty bit set'
diff --git a/tests/qemu-iotests/287 b/tests/qemu-iotests/287
index 2d5334e8bf..5427ad5456 100755
--- a/tests/qemu-iotests/287
+++ b/tests/qemu-iotests/287
@@ -61,13 +61,13 @@ echo
 echo "=== Testing compression type incompatible bit setting for zlib ==="
 echo
 _make_test_img -o compression_type=zlib 64M
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "=== Testing compression type incompatible bit setting for zstd ==="
 echo
 _make_test_img -o compression_type=zstd 64M
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "=== Testing zlib with incompatible bit set ==="
@@ -75,7 +75,7 @@ echo
 _make_test_img -o compression_type=zlib 64M
 $PYTHON qcow2.py "$TEST_IMG" set-feature-bit incompatible 3
 # to make sure the bit was actually set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 if $QEMU_IMG info "$TEST_IMG" >/dev/null 2>&1 ; then
     echo "Error: The image opened successfully. The image must not be opened."
@@ -87,7 +87,7 @@ echo
 _make_test_img -o compression_type=zstd 64M
 $PYTHON qcow2.py "$TEST_IMG" set-header incompatible_features 0
 # to make sure the bit was actually unset
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 if $QEMU_IMG info "$TEST_IMG" >/dev/null 2>&1 ; then
     echo "Error: The image opened successfully. The image must not be opened."
-- 
2.34.1

[PULL 17/24] iotest 39: use _qcow2_dump_header

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

_qcow2_dump_header has filter for compression type, so this change
makes test pass with IMGOPTS='compression_type=zstd'.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20211223160144.1097696-16-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/039 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/039 b/tests/qemu-iotests/039
index 8e783a8380..00d379cde2 100755
--- a/tests/qemu-iotests/039
+++ b/tests/qemu-iotests/039
@@ -142,7 +142,7 @@ $QEMU_IMG commit "$TEST_IMG"
 
 # The dirty bit must not be set
 _qcow2_dump_header | grep incompatible_features
-$PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features
+_qcow2_dump_header "$TEST_IMG".base | grep incompatible_features
 
 _check_test_img
 TEST_IMG="$TEST_IMG".base _check_test_img
-- 
2.34.1

[PULL 18/24] iotests: bash tests: filter compression type

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

We want iotests pass with both the default zlib compression and with
IMGOPTS='compression_type=zstd'.

Actually the only test that is interested in real compression type in
test output is 287 (test for qcow2 compression type), so implement
specific option for it.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223160144.1097696-17-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/060.out       |  2 +-
 tests/qemu-iotests/061.out       | 12 ++++++------
 tests/qemu-iotests/082.out       | 14 +++++++-------
 tests/qemu-iotests/198.out       |  4 ++--
 tests/qemu-iotests/287           |  8 ++++----
 tests/qemu-iotests/common.filter |  8 ++++++++
 tests/qemu-iotests/common.rc     | 14 +++++++++++++-
 7 files changed, 41 insertions(+), 21 deletions(-)

diff --git a/tests/qemu-iotests/060.out b/tests/qemu-iotests/060.out
index b74540bafb..329977d9b9 100644
--- a/tests/qemu-iotests/060.out
+++ b/tests/qemu-iotests/060.out
@@ -17,7 +17,7 @@ virtual size: 64 MiB (67108864 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: true
diff --git a/tests/qemu-iotests/061.out b/tests/qemu-iotests/061.out
index 7ecbd4dea8..139fc68177 100644
--- a/tests/qemu-iotests/061.out
+++ b/tests/qemu-iotests/061.out
@@ -525,7 +525,7 @@ virtual size: 64 MiB (67108864 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     data file: TEST_DIR/t.IMGFMT.data
@@ -552,7 +552,7 @@ virtual size: 64 MiB (67108864 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     data file: foo
@@ -567,7 +567,7 @@ virtual size: 64 MiB (67108864 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     data file raw: false
@@ -583,7 +583,7 @@ virtual size: 64 MiB (67108864 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     data file: TEST_DIR/t.IMGFMT.data
@@ -597,7 +597,7 @@ virtual size: 64 MiB (67108864 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     data file: TEST_DIR/t.IMGFMT.data
@@ -612,7 +612,7 @@ virtual size: 64 MiB (67108864 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     data file: TEST_DIR/t.IMGFMT.data
diff --git a/tests/qemu-iotests/082.out b/tests/qemu-iotests/082.out
index 077ed0f2c7..d0dd333117 100644
--- a/tests/qemu-iotests/082.out
+++ b/tests/qemu-iotests/082.out
@@ -17,7 +17,7 @@ virtual size: 128 MiB (134217728 bytes)
 cluster_size: 4096
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: true
     refcount bits: 16
     corrupt: false
@@ -31,7 +31,7 @@ virtual size: 128 MiB (134217728 bytes)
 cluster_size: 8192
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: true
     refcount bits: 16
     corrupt: false
@@ -329,7 +329,7 @@ virtual size: 128 MiB (134217728 bytes)
 cluster_size: 4096
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: true
     refcount bits: 16
     corrupt: false
@@ -342,7 +342,7 @@ virtual size: 128 MiB (134217728 bytes)
 cluster_size: 8192
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: true
     refcount bits: 16
     corrupt: false
@@ -639,7 +639,7 @@ virtual size: 128 MiB (134217728 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: true
     refcount bits: 16
     corrupt: false
@@ -652,7 +652,7 @@ virtual size: 130 MiB (136314880 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -665,7 +665,7 @@ virtual size: 132 MiB (138412032 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: true
     refcount bits: 16
     corrupt: false
diff --git a/tests/qemu-iotests/198.out b/tests/qemu-iotests/198.out
index 3952708444..805494916f 100644
--- a/tests/qemu-iotests/198.out
+++ b/tests/qemu-iotests/198.out
@@ -36,7 +36,7 @@ image: json:{ /* filtered */ }
 file format: IMGFMT
 virtual size: 16 MiB (16777216 bytes)
 Format specific information:
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     encrypt:
         ivgen alg: plain64
         hash alg: sha256
@@ -81,7 +81,7 @@ virtual size: 16 MiB (16777216 bytes)
 backing file: TEST_DIR/t.IMGFMT.base
 backing file format: IMGFMT
 Format specific information:
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     encrypt:
         ivgen alg: plain64
         hash alg: sha256
diff --git a/tests/qemu-iotests/287 b/tests/qemu-iotests/287
index 5427ad5456..6414640b21 100755
--- a/tests/qemu-iotests/287
+++ b/tests/qemu-iotests/287
@@ -61,13 +61,13 @@ echo
 echo "=== Testing compression type incompatible bit setting for zlib ==="
 echo
 _make_test_img -o compression_type=zlib 64M
-_qcow2_dump_header | grep incompatible_features
+_qcow2_dump_header --no-filter-compression | grep incompatible_features
 
 echo
 echo "=== Testing compression type incompatible bit setting for zstd ==="
 echo
 _make_test_img -o compression_type=zstd 64M
-_qcow2_dump_header | grep incompatible_features
+_qcow2_dump_header --no-filter-compression | grep incompatible_features
 
 echo
 echo "=== Testing zlib with incompatible bit set ==="
@@ -75,7 +75,7 @@ echo
 _make_test_img -o compression_type=zlib 64M
 $PYTHON qcow2.py "$TEST_IMG" set-feature-bit incompatible 3
 # to make sure the bit was actually set
-_qcow2_dump_header | grep incompatible_features
+_qcow2_dump_header --no-filter-compression | grep incompatible_features
 
 if $QEMU_IMG info "$TEST_IMG" >/dev/null 2>&1 ; then
     echo "Error: The image opened successfully. The image must not be opened."
@@ -87,7 +87,7 @@ echo
 _make_test_img -o compression_type=zstd 64M
 $PYTHON qcow2.py "$TEST_IMG" set-header incompatible_features 0
 # to make sure the bit was actually unset
-_qcow2_dump_header | grep incompatible_features
+_qcow2_dump_header --no-filter-compression | grep incompatible_features
 
 if $QEMU_IMG info "$TEST_IMG" >/dev/null 2>&1 ; then
     echo "Error: The image opened successfully. The image must not be opened."
diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
index 2b2b53946c..75cc241580 100644
--- a/tests/qemu-iotests/common.filter
+++ b/tests/qemu-iotests/common.filter
@@ -247,6 +247,7 @@ _filter_img_info()
         -e "/block_state_zero: \\(on\\|off\\)/d" \
         -e "/log_size: [0-9]\\+/d" \
         -e "s/iters: [0-9]\\+/iters: 1024/" \
+        -e 's/\(compression type: \)\(zlib\|zstd\)/\1COMPRESSION_TYPE/' \
         -e "s/uuid: [-a-f0-9]\\+/uuid: 00000000-0000-0000-0000-000000000000/" | \
     while IFS='' read -r line; do
         if [[ $format_specific == 1 ]]; then
@@ -337,5 +338,12 @@ _filter_authz_check_tls()
     $SED -e 's/TLS x509 authz check for .* is denied/TLS x509 authz check for DISTINGUISHED-NAME is denied/'
 }
 
+_filter_qcow2_compression_type_bit()
+{
+    $SED -e 's/\(incompatible_features\s\+\)\[3\(, \)\?/\1[/' \
+         -e 's/\(incompatible_features.*\), 3\]/\1]/' \
+         -e 's/\(incompatible_features.*\), 3\(,.*\)/\1\2/'
+}
+
 # make sure this script returns success
 true
diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index 5dea310ea0..9885030b43 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -699,6 +699,7 @@ _img_info()
             -e "s#$TEST_DIR#TEST_DIR#g" \
             -e "s#$SOCK_DIR/fuse-#TEST_DIR/#g" \
             -e "s#$IMGFMT#IMGFMT#g" \
+            -e 's/\(compression type: \)\(zlib\|zstd\)/\1COMPRESSION_TYPE/' \
             -e "/^disk size:/ D" \
             -e "/actual-size/ D" | \
         while IFS='' read -r line; do
@@ -998,12 +999,23 @@ _require_one_device_of()
 
 _qcow2_dump_header()
 {
+    if [[ "$1" == "--no-filter-compression" ]]; then
+        local filter_compression=0
+        shift
+    else
+        local filter_compression=1
+    fi
+
     img="$1"
     if [ -z "$img" ]; then
         img="$TEST_IMG"
     fi
 
-    $PYTHON qcow2.py "$img" dump-header
+    if [[ $filter_compression == 0 ]]; then
+        $PYTHON qcow2.py "$img" dump-header
+    else
+        $PYTHON qcow2.py "$img" dump-header | _filter_qcow2_compression_type_bit
+    fi
 }
 
 # make sure this script returns success
-- 
2.34.1

[PULL 19/24] iotests 60: more accurate set dirty bit in qcow2 header

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

Don't touch other incompatible bits, like compression-type. This makes
the test pass with IMGOPTS='compression_type=zstd'.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20211223160144.1097696-18-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/060 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/060 b/tests/qemu-iotests/060
index d1e3204d4e..df87d600f7 100755
--- a/tests/qemu-iotests/060
+++ b/tests/qemu-iotests/060
@@ -326,7 +326,7 @@ _make_test_img 64M
 # Let the refblock appear unaligned
 poke_file "$TEST_IMG" "$rt_offset"        "\x00\x00\x00\x00\xff\xff\x2a\x00"
 # Mark the image dirty, thus forcing an automatic check when opening it
-poke_file "$TEST_IMG" 72 "\x00\x00\x00\x00\x00\x00\x00\x01"
+$PYTHON qcow2.py "$TEST_IMG" set-feature-bit incompatible 0
 # Open the image (qemu should refuse to do so)
 $QEMU_IO -c close "$TEST_IMG" 2>&1 | _filter_testdir | _filter_imgfmt
 
-- 
2.34.1

[PULL 20/24] iotest 214: explicit compression type

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

The test-case "Corrupted size field in compressed cluster descriptor"
heavily depends on zlib compression type. So, make it explicit. This
way test passes with IMGOPTS='compression_type=zstd'.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20211223160144.1097696-19-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/214 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/214 b/tests/qemu-iotests/214
index 0889089d81..c66e246ba2 100755
--- a/tests/qemu-iotests/214
+++ b/tests/qemu-iotests/214
@@ -51,7 +51,7 @@ echo
 # The L2 entries of the two compressed clusters are located at
 # 0x800000 and 0x800008, their original values are 0x4008000000a00000
 # and 0x4008000000a00802 (5 sectors for compressed data each).
-_make_test_img 8M -o cluster_size=2M
+_make_test_img 8M -o cluster_size=2M,compression_type=zlib
 $QEMU_IO -c "write -c -P 0x11 0 2M" -c "write -c -P 0x11 2M 2M" "$TEST_IMG" \
          2>&1 | _filter_qemu_io | _filter_testdir
 
-- 
2.34.1

[PULL 21/24] iotests: declare lack of support for compresion_type in IMGOPTS

[Hanna Reitz]

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

compression_type can't be used if we want to create image with
compat=0.10. So, skip these tests, not many of them.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211223160144.1097696-20-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/031 | 5 +++--
 tests/qemu-iotests/051 | 5 +++--
 tests/qemu-iotests/061 | 6 +++++-
 tests/qemu-iotests/112 | 3 ++-
 tests/qemu-iotests/290 | 2 +-
 5 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/tests/qemu-iotests/031 b/tests/qemu-iotests/031
index 648112f796..ee587b1606 100755
--- a/tests/qemu-iotests/031
+++ b/tests/qemu-iotests/031
@@ -42,8 +42,9 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow2
 _supported_proto file fuse
 # We want to test compat=0.10, which does not support external data
-# files or refcount widths other than 16
-_unsupported_imgopts data_file 'refcount_bits=\([^1]\|.\([^6]\|$\)\)'
+# files or refcount widths other than 16 or compression type
+_unsupported_imgopts data_file compression_type \
+    'refcount_bits=\([^1]\|.\([^6]\|$\)\)'
 
 CLUSTER_SIZE=65536
 
diff --git a/tests/qemu-iotests/051 b/tests/qemu-iotests/051
index e9042a6214..f1a506518b 100755
--- a/tests/qemu-iotests/051
+++ b/tests/qemu-iotests/051
@@ -41,8 +41,9 @@ _supported_fmt qcow2
 _supported_proto file
 # A compat=0.10 image is created in this test which does not support anything
 # other than refcount_bits=16;
-# it also will not support an external data file
-_unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' data_file
+# it also will not support an external data file and compression type
+_unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' data_file \
+    compression_type
 _require_drivers nbd
 
 if [ "$QEMU_DEFAULT_MACHINE" = "pc" ]; then
diff --git a/tests/qemu-iotests/061 b/tests/qemu-iotests/061
index 70edf1a163..513fbec14c 100755
--- a/tests/qemu-iotests/061
+++ b/tests/qemu-iotests/061
@@ -48,7 +48,11 @@ _supported_os Linux
 # not work with it;
 # we have explicit tests for various cluster sizes, the remaining tests
 # require the default 64k cluster
-_unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' data_file cluster_size
+# we don't have explicit tests for zstd qcow2 compression type, as zstd may be
+# not compiled in. And we can't create compat images with comression type
+# extension
+_unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' data_file \
+    cluster_size compression_type
 
 echo
 echo "=== Testing version downgrade with zero expansion ==="
diff --git a/tests/qemu-iotests/112 b/tests/qemu-iotests/112
index 07ac74fb2c..5333212993 100755
--- a/tests/qemu-iotests/112
+++ b/tests/qemu-iotests/112
@@ -43,7 +43,8 @@ _supported_proto file fuse
 # This test will set refcount_bits on its own which would conflict with the
 # manual setting; compat will be overridden as well;
 # and external data files do not work well with our refcount testing
-_unsupported_imgopts refcount_bits 'compat=0.10' data_file
+# also, compression type is not supported with compat=0.10 used in test
+_unsupported_imgopts refcount_bits 'compat=0.10' data_file compression_type
 
 print_refcount_bits()
 {
diff --git a/tests/qemu-iotests/290 b/tests/qemu-iotests/290
index ed80da2685..776b59de1b 100755
--- a/tests/qemu-iotests/290
+++ b/tests/qemu-iotests/290
@@ -41,7 +41,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow2
 _supported_proto file fuse
 _supported_os Linux
-_unsupported_imgopts 'compat=0.10' refcount_bits data_file
+_unsupported_imgopts 'compat=0.10' refcount_bits data_file compression_type
 
 echo
 echo "### Test 'qemu-io -c discard' on a QCOW2 image without a backing file"
-- 
2.34.1

[PULL 22/24] block-backend: Retain permissions after migration

[Hanna Reitz]

After migration, the permissions the guest device wants to impose on its
BlockBackend are stored in blk->perm and blk->shared_perm.  In
blk_root_activate(), we take our permissions, but keep all shared
permissions open by calling `blk_set_perm(blk->perm, BLK_PERM_ALL)`.

Only afterwards (immediately or later, depending on the runstate) do we
restrict the shared permissions by calling
`blk_set_perm(blk->perm, blk->shared_perm)`.  Unfortunately, our first
call with shared_perm=BLK_PERM_ALL has overwritten blk->shared_perm to
be BLK_PERM_ALL, so this is a no-op and the set of shared permissions is
not restricted.

Fix this bug by saving the set of shared permissions before invoking
blk_set_perm() with BLK_PERM_ALL and restoring it afterwards.

Fixes: 5f7772c4d0cf32f4e779fcd5a69ae4dae24aeebf
       ("block-backend: Defer shared_perm tightening migration
       completion")
Reported-by: Peng Liang <liangpeng10@huawei.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211125135317.186576-2-hreitz@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Peng Liang <liangpeng10@huawei.com>
---
 block/block-backend.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/block/block-backend.c b/block/block-backend.c
index 23e727199b..4ff6b4d785 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -190,6 +190,7 @@ static void blk_root_activate(BdrvChild *child, Error **errp)
 {
     BlockBackend *blk = child->opaque;
     Error *local_err = NULL;
+    uint64_t saved_shared_perm;
 
     if (!blk->disable_perm) {
         return;
@@ -197,12 +198,22 @@ static void blk_root_activate(BdrvChild *child, Error **errp)
 
     blk->disable_perm = false;
 
+    /*
+     * blk->shared_perm contains the permissions we want to share once
+     * migration is really completely done.  For now, we need to share
+     * all; but we also need to retain blk->shared_perm, which is
+     * overwritten by a successful blk_set_perm() call.  Save it and
+     * restore it below.
+     */
+    saved_shared_perm = blk->shared_perm;
+
     blk_set_perm(blk, blk->perm, BLK_PERM_ALL, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         blk->disable_perm = true;
         return;
     }
+    blk->shared_perm = saved_shared_perm;
 
     if (runstate_check(RUN_STATE_INMIGRATE)) {
         /* Activation can happen when migration process is still active, for
-- 
2.34.1

[PULL 23/24] iotests/migration-permissions: New test

[Hanna Reitz]

This test checks that a raw image in use by a virtio-blk device does not
share the WRITE permission both before and after migration.

Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 .../qemu-iotests/tests/migration-permissions  | 101 ++++++++++++++++++
 .../tests/migration-permissions.out           |   5 +
 2 files changed, 106 insertions(+)
 create mode 100755 tests/qemu-iotests/tests/migration-permissions
 create mode 100644 tests/qemu-iotests/tests/migration-permissions.out

diff --git a/tests/qemu-iotests/tests/migration-permissions b/tests/qemu-iotests/tests/migration-permissions
new file mode 100755
index 0000000000..6be02581c7
--- /dev/null
+++ b/tests/qemu-iotests/tests/migration-permissions
@@ -0,0 +1,101 @@
+#!/usr/bin/env python3
+# group: migration
+#
+# Copyright (C) 2021 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import os
+import iotests
+from iotests import imgfmt, qemu_img_create, qemu_io
+
+
+test_img = os.path.join(iotests.test_dir, 'test.img')
+mig_sock = os.path.join(iotests.sock_dir, 'mig.sock')
+
+
+class TestMigrationPermissions(iotests.QMPTestCase):
+    def setUp(self):
+        qemu_img_create('-f', imgfmt, test_img, '1M')
+
+        # Set up two VMs (source and destination) accessing the same raw
+        # image file with a virtio-blk device; prepare the destination for
+        # migration with .add_incoming() and enable migration events
+        vms = [None, None]
+        for i in range(2):
+            vms[i] = iotests.VM(path_suffix=f'{i}')
+            vms[i].add_blockdev(f'file,node-name=prot,filename={test_img}')
+            vms[i].add_blockdev(f'{imgfmt},node-name=fmt,file=prot')
+            vms[i].add_device('virtio-blk,drive=fmt')
+
+            if i == 1:
+                vms[i].add_incoming(f'unix:{mig_sock}')
+
+            vms[i].launch()
+
+            result = vms[i].qmp('migrate-set-capabilities',
+                                capabilities=[
+                                    {'capability': 'events', 'state': True}
+                                ])
+            self.assert_qmp(result, 'return', {})
+
+        self.vm_s = vms[0]
+        self.vm_d = vms[1]
+
+    def tearDown(self):
+        self.vm_s.shutdown()
+        self.vm_d.shutdown()
+        try:
+            os.remove(mig_sock)
+        except FileNotFoundError:
+            pass
+        os.remove(test_img)
+
+    # Migrate an image in use by a virtio-blk device to another VM and
+    # verify that the WRITE permission is unshared both before and after
+    # migration
+    def test_post_migration_permissions(self):
+        # Try to access the image R/W, which should fail because virtio-blk
+        # has not been configured with share-rw=on
+        log = qemu_io('-f', imgfmt, '-c', 'quit', test_img)
+        if not log.strip():
+            print('ERROR (pre-migration): qemu-io should not be able to '
+                  'access this image, but it reported no error')
+        else:
+            # This is the expected output
+            assert 'Is another process using the image' in log
+
+        # Now migrate the VM
+        self.vm_s.qmp('migrate', uri=f'unix:{mig_sock}')
+        assert self.vm_s.wait_migration(None)
+        assert self.vm_d.wait_migration(None)
+
+        # Try the same qemu-io access again, verifying that the WRITE
+        # permission remains unshared
+        log = qemu_io('-f', imgfmt, '-c', 'quit', test_img)
+        if not log.strip():
+            print('ERROR (post-migration): qemu-io should not be able to '
+                  'access this image, but it reported no error')
+        else:
+            # This is the expected output
+            assert 'Is another process using the image' in log
+
+
+if __name__ == '__main__':
+    # Only works with raw images because we are testing the
+    # BlockBackend permissions; image format drivers may additionally
+    # unshare permissions and thus tamper with the result
+    iotests.main(supported_fmts=['raw'],
+                 supported_protocols=['file'])
diff --git a/tests/qemu-iotests/tests/migration-permissions.out b/tests/qemu-iotests/tests/migration-permissions.out
new file mode 100644
index 0000000000..ae1213e6f8
--- /dev/null
+++ b/tests/qemu-iotests/tests/migration-permissions.out
@@ -0,0 +1,5 @@
+.
+----------------------------------------------------------------------
+Ran 1 tests
+
+OK
-- 
2.34.1

[PULL 24/24] block.h: remove outdated comment

[Hanna Reitz]

From: Emanuele Giuseppe Esposito <eesposit@redhat.com>

The comment "disk I/O throttling" doesn't make any sense at all
any more. It was added in commit 0563e191516 to describe
bdrv_io_limits_enable()/disable(), which were removed in commit
97148076, so the comment is just a forgotten leftover.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20220131125615.74612-1-eesposit@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 include/block/block.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/block/block.h b/include/block/block.h
index 9d4050220b..e1713ee306 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -344,7 +344,6 @@ typedef unsigned int BdrvChildRole;
 char *bdrv_perm_names(uint64_t perm);
 uint64_t bdrv_qapi_perm_to_blk_perm(BlockPermission qapi_perm);
 
-/* disk I/O throttling */
 void bdrv_init(void);
 void bdrv_init_with_whitelist(void);
 bool bdrv_uses_whitelist(void);
-- 
2.34.1

Re: [PULL 00/24] Block patches

[Peter Maydell]

On Tue, 1 Feb 2022 at 14:42, Hanna Reitz <hreitz@redhat.com> wrote:
>
> The following changes since commit 804b30d25f8d70dc2dea951883ea92235274a50c:
>
>   Merge remote-tracking branch 'remotes/legoater/tags/pull-ppc-20220130' into staging (2022-01-31 11:10:08 +0000)
>
> are available in the Git repository at:
>
>   https://gitlab.com/hreitz/qemu.git tags/pull-block-2022-02-01
>
> for you to fetch changes up to 751486c18555169ca4baf59440275d5831140822:
>
>   block.h: remove outdated comment (2022-02-01 13:28:53 +0100)
>
> ----------------------------------------------------------------
> Block patches:
> - Add support to the iotests to test qcow2's zstd compression mode
> - Fix post-migration block node permissions
> - iotests fixes (051 and mirror-ready-cancel-error)
> - Remove an outdated comment
>


Applied, thanks.

Please update the changelog at https://wiki.qemu.org/ChangeLog/7.0
for any user-visible changes.

-- PMM

Re: [PULL 10/24] iotest 065: explicit compression type

[Thomas Huth]

On 01/02/2022 15.42, Hanna Reitz wrote:
> From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> 
> The test checks different options. It of course fails if set
> IMGOPTS='compression_type=zstd'. So, let's be explicit in what
> compression type we want and independent of IMGOPTS. Test both existing
> compression types.
> 
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> Reviewed-by: Hanna Reitz <hreitz@redhat.com>
> Message-Id: <20211223160144.1097696-9-vsementsov@virtuozzo.com>
> Signed-off-by: Hanna Reitz <hreitz@redhat.com>
> ---
>   tests/qemu-iotests/065 | 16 ++++++++--------
>   1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/tests/qemu-iotests/065 b/tests/qemu-iotests/065
> index dc7716275f..f7c1b68dad 100755
> --- a/tests/qemu-iotests/065
> +++ b/tests/qemu-iotests/065
> @@ -88,7 +88,7 @@ class TestQMP(TestImageInfoSpecific):
>   
>   class TestQCow2(TestQemuImgInfo):
>       '''Testing a qcow2 version 2 image'''
> -    img_options = 'compat=0.10'
> +    img_options = 'compat=0.10,compression_type=zlib'
>       json_compare = { 'compat': '0.10', 'refcount-bits': 16,
>                        'compression-type': 'zlib' }
>       human_compare = [ 'compat: 0.10', 'compression type: zlib',
> @@ -96,17 +96,17 @@ class TestQCow2(TestQemuImgInfo):
>   
>   class TestQCow3NotLazy(TestQemuImgInfo):
>       '''Testing a qcow2 version 3 image with lazy refcounts disabled'''
> -    img_options = 'compat=1.1,lazy_refcounts=off'
> +    img_options = 'compat=1.1,lazy_refcounts=off,compression_type=zstd'
>       json_compare = { 'compat': '1.1', 'lazy-refcounts': False,
>                        'refcount-bits': 16, 'corrupt': False,
> -                     'compression-type': 'zlib', 'extended-l2': False }
> -    human_compare = [ 'compat: 1.1', 'compression type: zlib',
> +                     'compression-type': 'zstd', 'extended-l2': False }
> +    human_compare = [ 'compat: 1.1', 'compression type: zstd',
>                         'lazy refcounts: false', 'refcount bits: 16',
>                         'corrupt: false', 'extended l2: false' ]

iotest 065 is currently failing on my laptop - and I think this patch here 
is the reason (thanks to jsnow for helping me with the debugging): I don't 
have libzstd-devel installed on my system, so my QEMU does not feature the 
zstd compression algorithm. But this tests wants to use it, without checking 
its availability first. Could you please add such a check so that it works 
without zstd, too?

  Thomas

Re: [PULL 00/24] Block patches

[Peter Maydell]

On Tue, 5 May 2020 at 13:58, Max Reitz <mreitz@redhat.com> wrote:
>
> The following changes since commit 5375af3cd7b8adcc10c18d8083b7be63976c9645:
>
>   Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging (2020-05-04 15:51:09 +0100)
>
> are available in the Git repository at:
>
>   https://github.com/XanClic/qemu.git tags/pull-block-2020-05-05
>
> for you to fetch changes up to 4ce5dd3e9b5ee0fac18625860eb3727399ee965e:
>
>   block/block-copy: use aio-task-pool API (2020-05-05 14:03:28 +0200)
>
> ----------------------------------------------------------------
> Block patches:
> - Asynchronous copying for block-copy (i.e., the backup job)
> - Allow resizing of qcow2 images when they have internal snapshots
> - iotests: Logging improvements for Python tests
> - iotest 153 fix, and block comment cleanups
>


Applied, thanks.

Please update the changelog at https://wiki.qemu.org/ChangeLog/5.1
for any user-visible changes.

-- PMM

[PULL 00/24] Block patches

[Max Reitz]

The following changes since commit 5375af3cd7b8adcc10c18d8083b7be63976c9645:

  Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging (2020-05-04 15:51:09 +0100)

are available in the Git repository at:

  https://github.com/XanClic/qemu.git tags/pull-block-2020-05-05

for you to fetch changes up to 4ce5dd3e9b5ee0fac18625860eb3727399ee965e:

  block/block-copy: use aio-task-pool API (2020-05-05 14:03:28 +0200)

----------------------------------------------------------------
Block patches:
- Asynchronous copying for block-copy (i.e., the backup job)
- Allow resizing of qcow2 images when they have internal snapshots
- iotests: Logging improvements for Python tests
- iotest 153 fix, and block comment cleanups

----------------------------------------------------------------
Eric Blake (4):
  block: Add blk_new_with_bs() helper
  qcow2: Allow resize of images with internal snapshots
  qcow2: Tweak comment about bitmaps vs. resize
  block: Comment cleanups

John Snow (14):
  iotests: do a light delinting
  iotests: don't use 'format' for drive_add
  iotests: ignore import warnings from pylint
  iotests: replace mutable list default args
  iotests: add pylintrc file
  iotests: alphabetize standard imports
  iotests: drop pre-Python 3.4 compatibility code
  iotests: touch up log function signature
  iotests: limit line length to 79 chars
  iotests: add hmp helper with logging
  iotests: add script_initialize
  iotest 258: use script_main
  iotests: Mark verify functions as private
  iotests: use python logging for iotests.log()

Maxim Levitsky (1):
  Fix iotest 153

Vladimir Sementsov-Ogievskiy (5):
  block/block-copy: rename in-flight requests to tasks
  block/block-copy: alloc task on each iteration
  block/block-copy: add state pointer to BlockCopyTask
  block/block-copy: refactor task creation
  block/block-copy: use aio-task-pool API

 include/sysemu/block-backend.h |   2 +
 block/block-backend.c          |  23 +++
 block/block-copy.c             | 279 +++++++++++++++++--------
 block/crypto.c                 |   9 +-
 block/io.c                     |   3 +-
 block/parallels.c              |   8 +-
 block/qcow.c                   |   8 +-
 block/qcow2-refcount.c         |   2 +-
 block/qcow2-snapshot.c         |  20 +-
 block/qcow2.c                  |  45 ++--
 block/qed.c                    |   8 +-
 block/sheepdog.c               |  10 +-
 block/vdi.c                    |   8 +-
 block/vhdx.c                   |   8 +-
 block/vmdk.c                   |   9 +-
 block/vpc.c                    |   8 +-
 block/vvfat.c                  |  10 +-
 blockdev.c                     |   8 +-
 blockjob.c                     |   7 +-
 tests/qemu-iotests/001         |   2 +-
 tests/qemu-iotests/030         |   4 +-
 tests/qemu-iotests/052         |   2 +-
 tests/qemu-iotests/055         |   3 +-
 tests/qemu-iotests/061         |  35 ++++
 tests/qemu-iotests/061.out     |  28 +++
 tests/qemu-iotests/134         |   2 +-
 tests/qemu-iotests/149         |   3 +-
 tests/qemu-iotests/153         |   2 +-
 tests/qemu-iotests/153.out     |  12 +-
 tests/qemu-iotests/155         |   2 +-
 tests/qemu-iotests/188         |   2 +-
 tests/qemu-iotests/194         |   4 +-
 tests/qemu-iotests/202         |   4 +-
 tests/qemu-iotests/203         |   4 +-
 tests/qemu-iotests/206         |   2 +-
 tests/qemu-iotests/207         |   6 +-
 tests/qemu-iotests/208         |   2 +-
 tests/qemu-iotests/209         |   2 +-
 tests/qemu-iotests/210         |   6 +-
 tests/qemu-iotests/211         |   6 +-
 tests/qemu-iotests/212         |   6 +-
 tests/qemu-iotests/213         |   6 +-
 tests/qemu-iotests/216         |   4 +-
 tests/qemu-iotests/218         |   2 +-
 tests/qemu-iotests/219         |   2 +-
 tests/qemu-iotests/222         |   7 +-
 tests/qemu-iotests/224         |   4 +-
 tests/qemu-iotests/228         |   6 +-
 tests/qemu-iotests/234         |   4 +-
 tests/qemu-iotests/235         |   4 +-
 tests/qemu-iotests/236         |   2 +-
 tests/qemu-iotests/237         |   2 +-
 tests/qemu-iotests/238         |   2 +
 tests/qemu-iotests/242         |   2 +-
 tests/qemu-iotests/245         |   1 +
 tests/qemu-iotests/245.out     |  10 +-
 tests/qemu-iotests/246         |   2 +-
 tests/qemu-iotests/248         |   2 +-
 tests/qemu-iotests/254         |   2 +-
 tests/qemu-iotests/255         |   2 +-
 tests/qemu-iotests/256         |   2 +-
 tests/qemu-iotests/258         |  10 +-
 tests/qemu-iotests/260         |   4 +-
 tests/qemu-iotests/262         |   4 +-
 tests/qemu-iotests/264         |   4 +-
 tests/qemu-iotests/274         |   4 +-
 tests/qemu-iotests/277         |   2 +
 tests/qemu-iotests/280         |   8 +-
 tests/qemu-iotests/283         |   4 +-
 tests/qemu-iotests/iotests.py  | 366 ++++++++++++++++++++-------------
 tests/qemu-iotests/pylintrc    |  26 +++
 71 files changed, 728 insertions(+), 386 deletions(-)
 create mode 100644 tests/qemu-iotests/pylintrc

-- 
2.26.2