dm zoned: ignore last smaller runt zone
The SCSI layer allows ZBC drives to have a smaller last runt zone. For such a device, specifying the entire capacity for a dm-zoned target table entry fails because the specified capacity is not aligned on a device zone size indicated in the request queue structure of the device. Fix this problem by ignoring the last runt zone in the entry length when seting up the dm-zoned target (ctr method) and when iterating table entries of the target (iterate_devices method). This allows dm-zoned users to still easily setup a target using the entire device capacity (as mandated by dm-zoned) or the aligned capacity excluding the last runt zone. While at it, replace direct references to the device queue chunk_sectors limit with calls to the accessor blk_queue_zone_sectors(). Reported-by: NPeter Desnoyers <pjd@ccs.neu.edu> Cc: stable@vger.kernel.org Signed-off-by: NDamien Le Moal <damien.lemoal@wdc.com> Signed-off-by: NMike Snitzer <snitzer@redhat.com>
Showing
想要评论请 注册 或 登录