Re: [PATCH RFC 0/8] blockdev-replace

[Vladimir Sementsov-Ogievskiy]

ping

02.08.2021 21:54, Vladimir Sementsov-Ogievskiy wrote:
> Hi all!
>
> As a continuation of "Qemu block filter insertion/removal API"
> discussion, here is my proposal of blockdev-replace.
>
> The realization allows:
>
> - replace children of different parents: BDS, block devices, block
>    exports
>
> - automatically replace all parents of specific BDS, excluding creating
>    loops (like bdrv_replace_node())
>
> - do several replacements in one transaction
>
> It's an untested draft, so you may go to patch 8, to look at QAPI
> addition.
>
> Vladimir Sementsov-Ogievskiy (8):
>    block-backend: blk_root(): drop const specifier on return type
>    block: add BlockParentClass class
>    block: realize BlockParentClass for BlockDriverState
>    block/export: realize BlockParentClass functionality
>    qdev: improve find_device_state() to distinguish simple not found case
>    qdev: realize BlockParentClass
>    block: improve bdrv_replace_node_noperm()
>    qapi: add blockdev-replace command
>
>   qapi/block-core.json           |  78 ++++++++++++++++
>   include/block/block-parent.h   |  32 +++++++
>   include/sysemu/block-backend.h |   2 +-
>   block.c                        | 158 ++++++++++++++++++++++++++++++++-
>   block/block-backend.c          |   2 +-
>   block/block-parent.c           |  66 ++++++++++++++
>   block/export/export.c          |  44 +++++++++
>   softmmu/qdev-monitor.c         |  90 +++++++++++++++----
>   block/meson.build              |   1 +
>   9 files changed, 453 insertions(+), 20 deletions(-)
>   create mode 100644 include/block/block-parent.h
>   create mode 100644 block/block-parent.c


--
Best regards,
Vladimir