创建Raid5报错，提示super1.x无法打开/ dev / sdd：设备或资源繁忙

[wangtianbocool]

用虚拟机学习liunx，之前创建raid10成功后，我清楚了raid信息，又组建raid5，报错。
[root@520 桌面]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
sda1 8:1 0 500M 0 part /boot
sda2 8:2 0 19.5G 0 part
rhel_linuxprobe-swap 253:0 0 2G 0 lvm [SWAP]
rhel_linuxprobe-root 253:1 0 17.5G 0 lvm /
sdb 8:16 0 20G 0 disk
sdc 8:32 0 20G 0 disk
sdd 8:48 0 20G 0 disk
sde 8:64 0 20G 0 disk
sr0 11:0 1 3.5G 0 rom /media/cdrom
[root@520 桌面]# mdadm -Cv /dev/md0 -n 3 -l 5 -x 1 /dev/sdb /dev/sdc /dev/sdd /dev/sde
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: chunk size defaults to 512K
mdadm: super1.x cannot open /dev/sdd: Device or resource busy
mdadm: /dev/sdd is not suitable for this array.
mdadm: create aborted
[root@520 桌面]#

[wangtianbocool]

sda1 8:1 0 500M 0 part /boot sda2 8:2 0 19.5G 0 part rhel_linuxprobe-swap 253:0 0 2G 0 lvm [SWAP] rhel_linuxprobe-root 253:1 0 17.5G 0 lvm / 前面提示特殊字符，我删除了，才能发表