On Aug 23, 2022 / 14:18, Pankaj Raghav wrote: > Only zoned devices with power-of-2(po2) number of sectors per zone(zone > size) were supported in linux but now non power-of-2(npo2) zone sizes > support has been added to the block layer. > > Filesystems such as F2FS and btrfs have support for zoned devices with > po2 zone size assumption. Before adding native support for npo2 zone > sizes, it was suggested to create a dm target for npo2 zone size device to > appear as a po2 zone size target so that file systems can initially > work without any explicit changes by using this target. FYI, with this patch series, I created the new dm target and ran blktests zbd group for it. And I observed zbd/007 test case failure (other test cases passed). The test checks sector mapping of zoned dm-linear, dm-flakey and dm- crypt. Some changes in the test case look required to handle the new target. -- Shin'ichiro Kawasaki
