NAME          ALIGNMENT MIN-IO OPT-IO PHY-SEC LOG-SEC ROTA SCHED    RQ-SIZE   RA WSAME
sda                   0    512      0     512     512    1 deadline     128 4096    4M
|-sda1                0    512      0     512     512    1 deadline     128 4096    4M
`-sda2                0    512      0     512     512    1 deadline     128 4096    4M
  |-rhel-root         0    512      0     512     512    1              128 4096    4M
  `-rhel-swap         0    512      0     512     512    1              128 4096    4M
sr0                   0    512      0     512     512    1 cfq          128  128    0B
