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1) List of Block Devices
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NAME     ALIGNMENT MIN-IO OPT-IO PHY-SEC LOG-SEC ROTA SCHED       RQ-SIZE  RA WSAME HCTL       PATH
sda              0    512      0     512     512    0 mq-deadline      64 128    0B 2:0:0:0    /dev/sda
├─sda1           0    512      0     512     512    0 mq-deadline      64 128    0B            /dev/sda1
├─sda2           0    512      0     512     512    0 mq-deadline      64 128    0B            /dev/sda2
├─sda3           0    512      0     512     512    0 mq-deadline      64 128    0B            /dev/sda3
└─sda4           0    512      0     512     512    0 mq-deadline      64 128    0B            /dev/sda4
  └─sda4         0    512      0     512     512    0                 128 128    0B            /dev/mapper/sda4
sdb              0    512      0     512     512    1 mq-deadline      64 128    0B 3:0:0:0    /dev/sdb
└─sdb1           0    512      0     512     512    1 mq-deadline      64 128    0B            /dev/sdb1
sdc              0    512      0     512     512    1 mq-deadline      64 128    0B 4:0:0:0    /dev/sdc
└─sdc1           0    512      0     512     512    1 mq-deadline      64 128    0B            /dev/sdc1
sdd              0   4096      0    4096     512    1 mq-deadline      64 128    0B 5:0:0:0    /dev/sdd
└─sdd1           0   4096      0    4096     512    1 mq-deadline      64 128    0B            /dev/sdd1
sde              0   4096      0    4096     512    1 mq-deadline      64 128    0B 6:0:0:0    /dev/sde
└─sde1           0   4096      0    4096     512    1 mq-deadline      64 128    0B            /dev/sde1
sdf              0   4096      0    4096     512    1 mq-deadline      64 128    0B 7:0:0:0    /dev/sdf
└─sdf1           0   4096      0    4096     512    1 mq-deadline      64 128    0B            /dev/sdf1
sdg              0   4096      0    4096     512    1 mq-deadline      64 128    0B 9:0:0:0    /dev/sdg
└─sdg1           0   4096      0    4096     512    1 mq-deadline      64 128    0B            /dev/sdg1
sdh              0   4096      0    4096     512    1 mq-deadline      64 128    0B 10:0:0:0   /dev/sdh
└─sdh1           0   4096      0    4096     512    1 mq-deadline      64 128    0B            /dev/sdh1
