v-box里面新建一个centos7.3的服务器
v-box中增加4块2TB容量的硬盘.(我增加的是nvme的ssd硬盘,普通硬盘也没有问题)
lsblk
删除raid
[root@bogon ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT nvme0n1 259:0 0 500G 0 disk └─md127 9:127 0 999.8G 0 raid5 nvme0n2 259:1 0 500G 0 disk └─md127 9:127 0 999.8G 0 raid5 nvme0n3 259:2 0 500G 0 disk └─md127 9:127 0 999.8G 0 raid5 nvme0n4 259:3 0 500G 0 disk └─md127 9:127 0 999.8G 0 raid5 [root@bogon ~]# mdadm /dev/md127 --fail /dev/nvme0n1 --remove /dev/nvme0n1 mdadm: set /dev/nvme0n1 faulty in /dev/md127 mdadm: hot removed /dev/nvme0n1 from /dev/md127 [root@bogon ~]# mdadm /dev/md127 --fail /dev/nvme0n2 --remove /dev/nvme0n2 mdadm: set /dev/nvme0n2 faulty in /dev/md127 mdadm: hot removed /dev/nvme0n2 from /dev/md127 [root@bogon ~]# mdadm /dev/md127 --fail /dev/nvme0n3 --remove /dev/nvme0n3 mdadm: set /dev/nvme0n3 faulty in /dev/md127 mdadm: hot removed /dev/nvme0n3 from /dev/md127 [root@bogon ~]# mdadm /dev/md127 --fail /dev/nvme0n4 --remove /dev/nvme0n4 mdadm: set /dev/nvme0n4 faulty in /dev/md127 mdadm: hot removed /dev/nvme0n4 from /dev/md127 [root@bogon ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT md127 9:127 0 999.8G 0 raid5 nvme0n1 259:0 0 500G 0 disk nvme0n2 259:1 0 500G 0 disk nvme0n3 259:2 0 500G 0 disk nvme0n4 259:3 0 500G 0 disk [root@bogon ~]# mdadm -S /dev/md127 mdadm: stopped /dev/md127 [root@bogon ~]# mdadm --misc --zero-superblock /dev/nvme0n1 [root@bogon ~]# mdadm --misc --zero-superblock /dev/nvme0n2 [root@bogon ~]# mdadm --misc --zero-superblock /dev/nvme0n3 [root@bogon ~]# mdadm --misc --zero-superblock /dev/nvme0n4