Re: [PATCH v15 0/5] backup-top filter driver for backup

[Max Reitz]

On 01.10.19 15:14, Vladimir Sementsov-Ogievskiy wrote:
> Hi all!
> 
> These series introduce backup-top driver. It's a filter-node, which
> do copy-before-write operation. Mirror uses filter-node for handling
> guest writes, let's move to filter-node (from write-notifiers) for
> backup too.
> 
> Preparation patches are queued in Max's block branch:
> 
> Based-on: https://github.com/XanClic/qemu.git block
> 
> v15: use BdrvChildren in block-copy
> 01-03: new
> 04-05: a lot of changes, such as
> 04:
>     - add new parameters for creation
>     - prepare bcs creation
>     - add target child
>     - refactor bdrv_backup_top_append
>     - drop r-b
> 05:
>     - move block-copy to use BdrvChildren
>     - drop extra style fixing hunks
>     - iotest 141 output changed
> 
> v14: Drop range locks, keep old good in-flight requests waiting
> 
> 12: new patch
> 14: use old request-waiting scheme instead of range locks
> 
> Vladimir Sementsov-Ogievskiy (5):
>   block/backup: move in-flight requests handling from backup to
>     block-copy
>   block/backup: move write_flags calculation inside backup_job_create
>   block/block-copy: split block_copy_set_callbacks function
>   block: introduce backup-top filter driver
>   block/backup: use backup-top instead of write notifiers
> 
>  qapi/block-core.json       |   8 +-
>  block/backup-top.h         |  41 +++++
>  include/block/block-copy.h |  31 +++-
>  include/block/block_int.h  |   1 +
>  block/backup-top.c         | 276 +++++++++++++++++++++++++++++++++
>  block/backup.c             | 147 +++++-------------
>  block/block-copy.c         | 140 +++++++++--------
>  block/replication.c        |   2 +-
>  blockdev.c                 |   1 +
>  block/Makefile.objs        |   1 +
>  tests/qemu-iotests/056     |   8 +-
>  tests/qemu-iotests/141.out |   2 +-
>  tests/qemu-iotests/257     |   7 +-
>  tests/qemu-iotests/257.out | 306 ++++++++++++++++++-------------------
>  14 files changed, 628 insertions(+), 343 deletions(-)
>  create mode 100644 block/backup-top.h
>  create mode 100644 block/backup-top.c

Thanks, applied to my block branch:

https://git.xanclic.moe/XanClic/qemu/commits/branch/block

Max

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