[ ... ] > 512 byte sector native drives are now far less common, Most smaller/faster SAS drivers still have 512 physical sectors, but >= 2TB drives, especially those with < 7200RPM, tend to have 4KiB physical sectors (because 4KiB sector drives are cheaper). > with many of the drives being native 4096 bytes witnh a > translation layer for legacy systems that require 512 bytes. On a PC here I have half-and-half: # lsscsi | grep sd. [0:0:0:0] disk ATA WDC WD2002FAEX-0 05.0 /dev/sda [1:0:0:0] disk ATA ST2000DM001-1CH1 CC44 /dev/sdb [2:0:0:0] disk ATA ST2000DM001-9YN1 CC4C /dev/sdc [3:0:0:0] disk ATA Hitachi HDS72202 JKAO /dev/sdd [6:0:0:0] disk ATA WDC WD20EARX-32P AB51 /dev/sde [6:0:1:0] disk ATA ST2000DL003-9VT1 CC32 /dev/sdf # grep . /sys/block/sd?/queue/physical_block_size /sys/block/sda/queue/physical_block_size:512 /sys/block/sdb/queue/physical_block_size:4096 /sys/block/sdc/queue/physical_block_size:4096 /sys/block/sdd/queue/physical_block_size:512 /sys/block/sde/queue/physical_block_size:4096 /sys/block/sdf/queue/physical_block_size:512 They are all 2TB "consumer" drives, mostly recent ones. I am slightly surprised that half still have 512 physical sectors. [ ... ] -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
