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