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将磁盘添加到降级的 RAID1 阵列

tag-icon • tag-icon partitioning hard-drive raid mdadm
将磁盘添加到降级的 RAID1 阵列

我正在尝试将磁盘 (sdc1) 添加到降级的 RAID1 阵列 (md126)，但我不知道如何继续。任何帮助都将不胜感激，因为我不想丢失驱动器上的任何数据。

帖子中的输出格式不太好，因此为了清晰起见附上了一张屏幕截图

cat /proc/mdstat

Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
md126 : active raid1 sdd[0]
      9766433792 blocks super external:/md127/0 [2/1] [_U]

md127 : inactive sdd[0](S)
      2940 blocks super external:imsm

unused devices: <none>

lsblk

NAME           MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
sda              8:0    0   1.9T  0 disk  
├─sda1           8:1    0   500M  0 part  
├─sda2           8:2    0   1.9T  0 part  
└─sda3           8:3    0   455M  0 part  
sdb              8:16   0   1.9T  0 disk  
├─sdb1           8:17   0 238.4M  0 part  /boot
└─sdb2           8:18   0   1.9T  0 part  
  └─sdb2_crypt 253:0    0   1.9T  0 crypt /
sdc              8:32   0   9.1T  0 disk  
└─sdc1           8:33   0   9.1T  0 part  
sdd              8:48   0   9.1T  0 disk  
└─md126          9:126  0   9.1T  0 raid1 
  └─md126p1    259:2    0   9.1T  0 md    /mnt/10TB
sde              8:64   0 447.1G  0 disk  
├─sde1           8:65   0   450M  0 part  
├─sde2           8:66   0   100M  0 part  
├─sde3           8:67   0    16M  0 part  
└─sde4           8:68   0 446.6G  0 part  
nvme0n1        259:0    0   1.1T  0 disk

答案1

阅读man dmraid。其中部分内容如下：

   {-R| --rebuild} RAID-set [device-path]
          Rebuild  raid  array after a drive has failed and a new drive is added.  For Intel chipset based systems, there are two methods in which a new drive is added to
          the system.

          1. Using OROM to identify a new drive
              During system reboot, enter OROM and mark the new drive as the rebuild drive.
              After booting to the OS, use the dmraid command to rebuild.

              Example: dmraid -R raid_set

          2. Using dmraid to identify a new drive
              Boot to the OS and use the dmraid command with the new drive as the second parameter.

              Example: dmraid -R raid_set /dev/sdc

          3. Using hot spare drive
              Mark a drive as hot spare using the "dmraid -f isw -S" command. Then use the dmraid command to start the rebuild.

              Example: dmraid -R raid_set

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