On Tue, Jan 08 2019 at 8:03pm -0500, Damien Le Moal <Damien.LeMoal@xxxxxxx> wrote: > You may want to check against the physical_block_size, and not the logical. SMR > disks that are 512 e (512B logical and 4K physical) can handle reads in 512B > units but writes have to be 4K. These are exceptions though and kind of breaking > all LBA definitions known to men... This check on the physical_block_size can be > limited to setups where the underlying disk is SMR. Damien, this sounds like a serious issue with SMR firmware. If the 512e SMR drive cannot handle 512b writes then it has no business advertising 512B logical. It should be advertising 4K logical. What am I missing? Mike -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
