linux 软Raid

烤鱼骑不快2025-12-04 21:58

解除软raid

bash 复制代码

root@localhost ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 894.3G 0 disk
├─md126 9:126 0 893.8G 0 raid1
│ ├─md126p1 259:0 0 500M 0 part
│ └─md126p2 259:1 0 893.3G 0 part
└─md127 9:127 0 0B 0 md
sdb 8:16 0 119.2G 0 disk
├─sdb1 8:17 0 600M 0 part /boot/efi
├─sdb2 8:18 0 1G 0 part /boot
└─sdb3 8:19 0 117.7G 0 part
├─openeuler-root 253:0 0 97.7G 0 lvm /
└─openeuler-swap 253:1 0 20G 0 lvm [SWAP]
[root@localhost ~]# mdadm --detail /dev/md126
/dev/md126:
Container : /dev/md/ddf0, member 0
Raid Level : raid1
Array Size : 937164800 (893.75 GiB 959.66 GB)
Used Dev Size : 937164800 (893.75 GiB 959.66 GB)
Raid Devices : 2
Total Devices : 1

State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0

Consistency Policy : resync

Container GUID : 4C534920:20202020:10000017:10009440:52C966DA:1EA0753F
(LSI 01/05/24 22:06:18)
Seq : 00000032
Virtual Disks : 1

Number Major Minor RaidDevice State
0 8 0 0 active sync /dev/sda
- 0 0 1 removed

bash 复制代码

# 停止并移除 RAID 阵列
sudo mdadm --stop /dev/md126 
# 清除超级块信息
sudo mdadm --zero-superblock /dev/sda
# 从配置文件中移除(如果存在)
sudo mdadm --remove /dev/md126 
# 更新 initramfs(可选，如果 RAID 在启动时自动组装)
sudo update-initramfs -u 
# 验证清除结果
sudo lsblk 
sudo mdadm --detail /dev/md126  # 应该显示"没有这样的设备或地址"