The NVMe ZNS command set has the zone descriptor extension feature for
associating the data to a zone. Devices that supports ZAC/ZBC have zero
zone descriptor extension size.
Signed-off-by: Sam Li <faithilike...@gmail.com>
---
docs/interop/qcow2.txt | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/docs/interop/qcow2.txt b/docs/interop/qcow2.txt
index a8dd4c3b15..106477d9ad 100644
--- a/docs/interop/qcow2.txt
+++ b/docs/interop/qcow2.txt
@@ -436,6 +436,15 @@ The fields of the zoned extension are:
The offset of zoned metadata structure in the contained
image, in bytes.
+ 44 - 51: zd_extension_size
+ The size of zone descriptor extension data in bytes.
+ The value must be a multiple of 64.
+
+ The zone descriptor extension feature is associating data
+ to a zone which is only available in the NVMe ZNS command
+ set. A value of zero indicates the feature is not
+ available.
+
== Full disk encryption header pointer ==
The full disk encryption header must be present if, and only if, the
--
2.40.1
