Hi Stefan, Stefan Hajnoczi <stefa...@gmail.com> 于2023年8月23日周三 21:26写道： > > Hi Sam and Klaus, > Val is adding nvme-io_uring ZNS support to libblkio > (https://gitlab.com/libblkio/libblkio/-/merge_requests/221) and asked > how to test the size of the last zone when the namespace's total size > is not a multiple of the zone size.
I think a zone report operation can do the trick. Given zone configs, the size of last zone should be [size - (nr_zones - 1) * zone_size]. Reporting last zone on such devices tells whether the value is correct. > > My understanding is that the zoned storage model allows the last zone > to be smaller than the zone size in this case. However, the NVMe ZNS > emulation code in QEMU makes all zones a multiple of the zone size. I > think QEMU cannot be used for this test case at the moment. > > Are there any plans to allow the last zone to have a different size? > Maybe Sam's qcow2 work will allow this? Yes, the zone report in qcow2 allows smaller last zone. Please let me know if there is any problem. Thanks, Sam
