On Mon, Jun 05, 2023 at 06:41:05PM +0800, Sam Li wrote: > Add the specs for the zoned format feature of the qcow2 driver. Once > the zoned_profile is set to `zbc`, then the qcow2 file can be taken > as zoned devices and passed through by virtio-blk device to the guest. > > Signed-off-by: Sam Li <faithilike...@gmail.com> > --- > docs/system/qemu-block-drivers.rst.inc | 31 ++++++++++++++++++++++++++ > 1 file changed, 31 insertions(+) > > diff --git a/docs/system/qemu-block-drivers.rst.inc > b/docs/system/qemu-block-drivers.rst.inc > index 105cb9679c..fdcf343652 100644 > --- a/docs/system/qemu-block-drivers.rst.inc > +++ b/docs/system/qemu-block-drivers.rst.inc > @@ -172,6 +172,37 @@ This section describes each format and the options that > are supported for it. > filename`` to check if the NOCOW flag is set or not (Capital 'C' is > NOCOW flag). > > + .. option:: zoned_profile > + > + The option configures the zoned format feature on the qcow2 driver. If > + this is set to ``zbc``, then it follows the basics of ZBC/ZAC protocol.
What about virtio-blk? NVMe ZNS? Please indicate what effect the profile has and whether it works with all emulated storage controllers that support zoned storage. > + > + .. option:: zone_size > + > + The size of a zone of the zoned device. The zoned device have the same "in bytes"? Please document the units. > + size of zones with an optional smaller last zone. "The device is divided into zones of this size with the exception of the last zone, which may be smaller." > + > + .. option:: zone_capacity > + > + The capacity of a zone of the zoned device. This can be expanded: The initial capacity value for all zones. The capacity must be less than or equal to zone size. If the last zone is smaller, then its capacity is capped. > The zoned device follows the > + ZBC protocol tends to have the same size as its zone. > + > + .. option:: zone_nr_conv > + > + The number of conventional zones of the zoned device. > + > + .. option:: max_open_zones > + > + The maximal allowed open zones. > + > + .. option:: max_active_zones > + > + The limit of the zones with implicit open, explicit open or closed state. > + > + .. option:: max_append_sectors > + > + The maximal sectors that is allowed to append to zones while writing. Does "sectors" mean 512B blocks or logical block size? > + > .. program:: image-formats > .. option:: qed > > -- > 2.40.1 >
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