spark@s:~$ sudo mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Thu Mar 1 15:25:10 2018 Raid Level : raid0 Array Size : 17581563392 (16767.09 GiB 18003.52 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent
Update Time : Thu Mar 1 15:25:10 2018 State : clean Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0
Chunk Size : 512K
Name : ns3092107:0 UUID : 50809f67:061828b7:2672a9e8:7c8c0ec5 Events : 0
Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 8 33 1 active sync /dev/sdc1 2 8 49 2 active sync /dev/sdd1 3 8 65 3 active sync /dev/sde1