[root@compute000 ~]# mdadm -C --verbose /dev/md0 -l0 -n2 /dev/xvdf /dev/xvdg
mdadm: chunk size defaults to 512K
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md0 started.
[root@ip-10-235-13-224 ~]# mdadm -Ds >> /etc/mdadm.conf
[root@ip-10-235-13-224 ~]# more /etc/mdadm.conf
ARRAY /dev/md0 metadata=1.2 name=ip-10-235-13-224:0 UUID=b66541b4:a8a01552:641e1
73f:918f3b2d
[root@ip-10-235-13-224 ~]# vim /etc/mdadm.conf
[root@ip-10-235-13-224 ~]# vim /etc/mdadm.conf
[root@ip-10-235-13-224 ~]# mdadm -Ss
mdadm: stopped /dev/md0
[root@ip-10-235-13-224 ~]# more /etc/mdadm.conf
ARRAY /dev/md0 metadata=1.2 name=ip-10-235-13-224:0 UUID=b66541b4:a8a01552:641e1
73f:918f3b2d devices=/dev/xvdf,/dev/xvdg
[root@ip-10-235-13-224 ~]# mdadm -As
mdadm: /dev/md0 has been started with 2 drives.
[root@ip-10-235-13-224 ~]# fdisk -l /dev/md0
Disk /dev/md0: 901.9 GB, 901868683264 bytes
2 heads, 4 sectors/track, 220182784 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 524288 bytes / 1048576 bytes
Disk identifier: 0x00000000
[root@ip-10-235-13-224 ~]# mkfs.ext4 /dev/md0
[root@ip-10-235-13-224 ~]# mkdir /mnt/data
[root@ip-10-235-13-224 ~]# mount /dev/md0 /mnt/data
[root@ip-10-235-13-224 ~]# df -lh /dev/md0
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