On Thu, Dec 15, 2016 at 10:33:47AM +0900, Damien Le Moal wrote: > For a regular block device, I agree. But in Stephan case, I think that > the check really needs to be against the physical block size, with the > added condition that the bdev is a DASD device (similarly to the zone > alignment check for zoned block devices).
Then they need to expose a chunk_size. physical block size is defined as not having a meaning for the kernel.
