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envelope-from=vsementsov@virtuozzo.com; helo=EUR05-AM6-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi all! 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 Patches without r-b: 9, 10, 19, 20 v4: rebase on Kevin's block branch v3: Keep x-perf.copy-range backup option. So, additional function is added to set copy_range in block-copy after creation. And if we do so, it's better to set "compress" option same way instead of handling x-deprecated-compress option. 8: rebased on not yet remove @perf argument, keep r-b 11, 21, 23: small related rebase conflicts, keep r-b 9, 10, 19: new 20: drop x-deprecated-compress option, drop r-b 24: fix typo 34: fix qmp( , **{}) to qmp( , {}) also, add a lot of Max's r-bs, thanks!!! v2: 01-02: new 03: don't bother with supporting empty child: we should never have such at this point 05: add comment 06: keep checking conflict with global add realized_set_allowed to qdev_prop_drive_iothread 07: improve cbw_cbw() name improve commit message 10: rebased on unchanged backup_calculate_cluster_size(). keep r-b CHECK ME 12: new 13: drop extra bdrv_unref() 18: add compress local variable add comment about x-deprecated-compress 19: new, replacement for "[PATCH 17/21] block/block-copy: switch to fully set bitmap by default" 22: improve qapi documentation 23-33: test: a lot of refactoring We have image fleecing scheme to export point-in-time state of active disk (iotest 222): backup(sync=none) ┌───────────────────────────────────────┐ ▼ │ ┌────────────┐ ┌────────────────┐ backing ┌─────────────┐ │ NBD export │ ─── │ temp qcow2 img │ ───────────────────▶ │ active disk │ └────────────┘ └────────────────┘ └─────────────┘ ▲ ┌────────────┐ │ │ guest blk │ ──────────────────────────────────────────────┘ └────────────┘ Actually, backup job inserts a backup-top filter, so in detail it looks like: backup(sync=none) ┌───────────────────────────────────────┐ ▼ │ ┌────────────┐ ┌────────────────┐ backing ┌─────────────┐ │ NBD export │ ─── │ temp qcow2 img │ ───────────────────▶ │ active disk │ └────────────┘ └────────────────┘ └─────────────┘ ▲ ▲ │ target │ │ │ ┌────────────┐ ┌────────────────┐ backing │ │ guest blk │ ──▶ │ backup-top │ ───────────────────────┘ └────────────┘ └────────────────┘ And job does nothing here. In a new blockdev world user is intended to operate on node level, and insert/remove filters by hand. Let's get rid of job in the scheme: ┌────────────┐ ┌────────────────┐ backing ┌─────────────┐ │ NBD export │ ─── │ temp qcow2 img │ ───────────────────▶ │ active disk │ └────────────┘ └────────────────┘ └─────────────┘ ▲ ▲ │ target │ │ │ ┌────────────┐ ┌────────────────┐ backing │ │ guest blk │ ──▶ │ backup-top │ ───────────────────────┘ └────────────┘ └────────────────┘ The series prepares qom-set to make possible inserting filters above root node (patches 03-06), rename backup-top to copy-before-write, do other preparations for publishing the filter, and finally publish it, add qapi interface and test new fleecing scheme in 222 (first, some good test refactoring). Vladimir Sementsov-Ogievskiy (35): block: rename bdrv_replace_child to bdrv_replace_child_tran block: comment graph-modifying function not updating permissions 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 | 30 ++- 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 | 53 +++- block/backup-top.c | 253 ------------------- block/backup.c | 116 ++------- block/block-backend.c | 8 + block/block-copy.c | 148 ++++++++--- 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, 911 insertions(+), 680 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