This problem occurs both 512 bytes sector and 4KB sector disks.
[root@test03 work]# cat sys/block/sde/queue/physical_block_size 512 [root@test03 work]# cat sys/block/sde/queue/logical_block_size 512 [root@test03 work]# cat sys/block/sde/queue/optimal_io_size 33553920
This problem occurs both 512 bytes sector and 4KB sector disks.
[root@test03 work]# cat sys/block/ sde/queue/ physical_ block_size sde/queue/ logical_ block_size sde/queue/ optimal_ io_size
512
[root@test03 work]# cat sys/block/
512
[root@test03 work]# cat sys/block/
33553920