diff mbox series

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

Message ID 20230918095313.5492-2-faithilikerun@gmail.com (mailing list archive)
State New, archived
Headers show
Series Add full zoned storage emulation to qcow2 driver | expand

Commit Message

Sam Li Sept. 18, 2023, 9:53 a.m. UTC 
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 <faithilikerun@gmail.com>
---
 docs/system/qemu-block-drivers.rst.inc | 33 ++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

Comments

Stefan Hajnoczi Sept. 27, 2023, 8:48 p.m. UTC | #1 
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 <faithilikerun@gmail.com>
> ---
>  docs/system/qemu-block-drivers.rst.inc | 33 ++++++++++++++++++++++++++
>  1 file changed, 33 insertions(+)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
diff mbox series

Patch

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