Re: [RFC v5 05/11] block: add block layer APIs resembling Linux ZonedBlockDevice ioctls

[Eric Blake]

On Mon, Aug 01, 2022 at 09:33:05AM +0800, Sam Li wrote:
> By adding zone management operations in BlockDriver, storage controller
> emulation can use the new block layer APIs including Report Zone and
> four zone management operations (open, close, finish, reset).
> 
> BlockDriver can get zone information from null_blk device by refreshing
> BLockLimits.
> 
> Signed-off-by: Sam Li <faithilikerun@gmail.com>
> ---
>  block/block-backend.c            |  47 ++++++
>  block/coroutines.h               |   6 +
>  block/file-posix.c               | 272 ++++++++++++++++++++++++++++++-
>  block/io.c                       |  57 +++++++
>  include/block/block-common.h     |   1 -
>  include/block/block-io.h         |  13 ++
>  include/block/block_int-common.h |  22 ++-
>  include/block/raw-aio.h          |   6 +-
>  meson.build                      |   1 +
>  qapi/block-core.json             |   7 +-
>  10 files changed, 426 insertions(+), 6 deletions(-)
> 

> +++ b/qapi/block-core.json
> @@ -2955,7 +2955,8 @@
>              'luks', 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels',
>              'preallocate', 'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
>              { 'name': 'replication', 'if': 'CONFIG_REPLICATION' },
> -            'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat' ] }
> +            'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat',
> +            { 'name': 'zoned_host_device', 'if': 'CONFIG_BLKZONED' } ] }

Missing a documentation line of '# @zoned_host_deivce: Since 7.2'.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org