Hi all!

Of course, that's a material for 6.2, still no harm in keeping it up to
date.

v6: rebase on master

Patches without r-b: 9, 10, 19, 20

v5: rebase on master
25: fix pylint complain 'Unnecessary "else" after "return"' [John]
25-26: rebased on moved machine.py
       use Dict[str, object] typing instead of Dict[str, Any]  [John]
       add John's r-b, keep Max's r-b

Vladimir Sementsov-Ogievskiy (33):
  block: introduce bdrv_replace_child_bs()
  block: introduce blk_replace_bs
  qdev-properties: PropertyInfo: add realized_set_allowed field
  qdev: allow setting drive property for realized device
  block: rename backup-top to copy-before-write
  block-copy: always set BDRV_REQ_SERIALISING flag
  block/block-copy: introduce block_copy_set_copy_opts()
  block/backup: set copy_range and compress after filter insertion
  block/backup: move cluster size calculation to block-copy
  block/copy-before-write: relax permission requirements when no parents
  block/copy-before-write: drop extra bdrv_unref on failure path
  block/copy-before-write: use file child instead of backing
  block/copy-before-write: bdrv_cbw_append(): replace child at last
  block/copy-before-write: introduce cbw_init()
  block/copy-before-write: cbw_init(): rename variables
  block/copy-before-write: cbw_init(): use file child after attaching
  block/copy-before-write: bdrv_cbw_append(): drop unused compress arg
  block/copy-before-write: cbw_init(): use options
  block/copy-before-write: initialize block-copy bitmap
  block/block-copy: make setting progress optional
  block/copy-before-write: make public block driver
  qapi: publish copy-before-write filter
  python/qemu/machine.py: refactor _qemu_args()
  python/qemu/machine: QEMUMachine: improve qmp() method
  iotests.py: VM: add own __enter__ method
  iotests/222: fix pylint and mypy complains
  iotests/222: constantly use single quotes for strings
  iotests: move 222 to tests/image-fleecing
  iotests.py: hmp_qemu_io: support qdev
  iotests/image-fleecing: proper source device
  iotests/image-fleecing: rename tgt_node
  iotests/image-fleecing: prepare for adding new test-case
  iotests/image-fleecing: add test-case for copy-before-write filter

 qapi/block-core.json                        |  25 +-
 block/{backup-top.h => copy-before-write.h} |  25 +-
 include/block/block-copy.h                  |   6 +-
 include/block/block.h                       |   2 +
 include/hw/qdev-properties.h                |   1 +
 include/sysemu/block-backend.h              |   1 +
 block.c                                     |  31 +++
 block/backup-top.c                          | 253 -------------------
 block/backup.c                              | 116 ++-------
 block/block-backend.c                       |   8 +
 block/block-copy.c                          | 142 ++++++++---
 block/copy-before-write.c                   | 256 ++++++++++++++++++++
 hw/core/qdev-properties-system.c            |  43 +++-
 hw/core/qdev-properties.c                   |   6 +-
 MAINTAINERS                                 |   4 +-
 block/meson.build                           |   2 +-
 python/qemu/machine/machine.py              |  30 ++-
 tests/qemu-iotests/222                      | 159 ------------
 tests/qemu-iotests/222.out                  |  67 -----
 tests/qemu-iotests/283                      |  35 ++-
 tests/qemu-iotests/283.out                  |   4 +-
 tests/qemu-iotests/297                      |   2 +-
 tests/qemu-iotests/iotests.py               |   9 +-
 tests/qemu-iotests/tests/image-fleecing     | 192 +++++++++++++++
 tests/qemu-iotests/tests/image-fleecing.out | 139 +++++++++++
 25 files changed, 889 insertions(+), 669 deletions(-)
 rename block/{backup-top.h => copy-before-write.h} (56%)
 delete mode 100644 block/backup-top.c
 create mode 100644 block/copy-before-write.c
 delete mode 100755 tests/qemu-iotests/222
 delete mode 100644 tests/qemu-iotests/222.out
 create mode 100755 tests/qemu-iotests/tests/image-fleecing
 create mode 100644 tests/qemu-iotests/tests/image-fleecing.out

-- 
2.29.2

Give a good name to test file.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/{222 => tests/image-fleecing}         | 0
 tests/qemu-iotests/{222.out => tests/image-fleecing.out} | 0
 2 files changed, 0 insertions(+), 0 deletions(-)
 rename tests/qemu-iotests/{222 => tests/image-fleecing} (100%)
 rename tests/qemu-iotests/{222.out => tests/image-fleecing.out} (100%)

diff --git a/tests/qemu-iotests/222 b/tests/qemu-iotests/tests/image-fleecing
similarity index 100%
rename from tests/qemu-iotests/222
rename to tests/qemu-iotests/tests/image-fleecing
diff --git a/tests/qemu-iotests/222.out b/tests/qemu-iotests/tests/image-fleecing.out
similarity index 100%
rename from tests/qemu-iotests/222.out
rename to tests/qemu-iotests/tests/image-fleecing.out
-- 
2.29.2