Re: [RFC 2/5] qcow2: add zone device metadata with zd_extension

[Markus Armbruster <armbru@redhat.com>]

Sam Li <faithilikerun@gmail.com> writes:

> Zone descriptor data is host definied data that is associated with
> each zone. Add zone descriptor extensions to zonedmeta and
> blk_get_zone_extension to access zd_extensions.
>
> Signed-off-by: Sam Li <faithilikerun@gmail.com>

[...]

> diff --git a/qapi/block-core.json b/qapi/block-core.json
> index 0c97ae678b..f71dd18fc3 100644
> --- a/qapi/block-core.json
> +++ b/qapi/block-core.json
> @@ -5024,6 +5024,8 @@
>  #                 (default: off, since 8.0)
>  # @zone-size: The size of a zone of the zoned device (since 8.0)
>  # @zone-capacity: The capacity of a zone of the zoned device (since 8.0)
> +# @zd-extension-size: Zone descriptor extension size. Must be a multiple of
> +#                     64 bytes (since 8.0)
>  # @zone-nr-conv: The number of conventional zones of the zoned device
>  #                (since 8.0)
>  # @max-open-zones: The maximal allowed open zones (since 8.0)

For better or worse, we tend to avoid abbreviations in QAPI schema
names.  Would @zone-descriptor-extension-size be too unwieldy?

> @@ -5052,6 +5054,7 @@
>              '*zoned-profile':      'str',
>              '*zone-size':          'size',
>              '*zone-capacity':      'size',
> +            '*zd-extension-size':  'size',
>              '*zone-nr-conv':       'uint32',
>              '*max-open-zones':     'uint32',
>              '*max-active-zones':   'uint32',