Re: [PATCH v4 1/4] docs/qcow2: add the zoned format feature

2023-09-27 Thread Stefan Hajnoczi
On Mon, Sep 18, 2023 at 05:53:10PM +0800, Sam Li wrote:
> Add the specs for the zoned format feature of the qcow2 driver.
> The qcow2 file can be taken as zoned device and passed through by
> virtio-blk device or NVMe ZNS device to the guest given zoned
> information.
> 
> Signed-off-by: Sam Li 
> ---
>  docs/system/qemu-block-drivers.rst.inc | 33 ++
>  1 file changed, 33 insertions(+)

Reviewed-by: Stefan Hajnoczi 


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[PATCH v4 1/4] docs/qcow2: add the zoned format feature

2023-09-18 Thread Sam Li
Add the specs for the zoned format feature of the qcow2 driver.
The qcow2 file can be taken as zoned device and passed through by
virtio-blk device or NVMe ZNS device to the guest given zoned
information.

Signed-off-by: Sam Li 
---
 docs/system/qemu-block-drivers.rst.inc | 33 ++
 1 file changed, 33 insertions(+)

diff --git a/docs/system/qemu-block-drivers.rst.inc 
b/docs/system/qemu-block-drivers.rst.inc
index 105cb9679c..4647c5fa29 100644
--- a/docs/system/qemu-block-drivers.rst.inc
+++ b/docs/system/qemu-block-drivers.rst.inc
@@ -172,6 +172,39 @@ 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
+1 for host-managed zoned device and 0 for a non-zoned device.
+
+  .. option:: zone_size
+
+The size of a zone in bytes. The device is divided into zones of this
+size with the exception of the last zone, which may be smaller.
+
+  .. option:: zone_capacity
+
+The initial capacity value, in bytes, 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 zone capacity is per zone and may be different between zones in real
+devices. For simplicity, QCow2 sets all zones to the same capacity.
+
+  .. 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 number of 512-byte sectors in a zone append request.
+
 .. program:: image-formats
 .. option:: qed
 
-- 
2.40.1