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[PATCH v4 1/4] docs/qcow2: add the zoned format feature
From: |
Sam Li |
Subject: |
[PATCH v4 1/4] docs/qcow2: add the zoned format feature |
Date: |
Mon, 18 Sep 2023 17:53:10 +0800 |
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(+)
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