我对我的服务器 OVH 进行了救援重启，并通过 ssh 连接到我的服务器。然后我尝试像平常一样安装磁盘，但无法安装。
这是尝试的命令的结果：
root@rescue:~# fdisk -l
Disk /dev/sda: 5.5 TiB, 6001175126016 bytes, 11721045168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 593223E8-887A-4821-B0C6-1649D623D455
Device Start End Sectors Size Type
/dev/sda1 40 2048 2009 1004.5K BIOS boot
/dev/sda2 4096 80873471 80869376 38.6G Linux RAID
/dev/sda3 80873472 11719991295 11639117824 5.4T Linux RAID
/dev/sda4 11719991296 11721037823 1046528 511M Linux swap
Disk /dev/sdc: 5.5 TiB, 6001175126016 bytes, 11721045168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: D19C5407-BC61-4727-B881-1A232260832E
Device Start End Sectors Size Type
/dev/sdc1 40 2048 2009 1004.5K BIOS boot
/dev/sdc2 4096 80873471 80869376 38.6G Linux RAID
/dev/sdc3 80873472 11719991295 11639117824 5.4T Linux RAID
/dev/sdc4 11719991296 11721037823 1046528 511M Linux swap
Disk /dev/sdd: 5.5 TiB, 6001175126016 bytes, 11721045168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: F8BC6212-1C93-4565-8945-A1E0F1EB6AF2
Device Start End Sectors Size Type
/dev/sdd1 40 2048 2009 1004.5K BIOS boot
/dev/sdd2 4096 80873471 80869376 38.6G Linux RAID
/dev/sdd3 80873472 11719991295 11639117824 5.4T Linux RAID
/dev/sdd4 11719991296 11721037823 1046528 511M Linux swap
Disk /dev/sdb: 5.5 TiB, 6001175126016 bytes, 11721045168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: A8CCBAD5-CACC-4FE4-A3D7-2FA3C4BB8272
Device Start End Sectors Size Type
/dev/sdb1 40 2048 2009 1004.5K BIOS boot
/dev/sdb2 4096 80873471 80869376 38.6G Linux RAID
/dev/sdb3 80873472 11719991295 11639117824 5.4T Linux RAID
/dev/sdb4 11719991296 11721037823 1046528 511M Linux swap
root@rescue:~# mount -t devtmpfs /dev/sda1 /mnt
root@rescue:~# mount -t devtmpfs /dev/sda2 /mnt/home
mount point /mnt/home does not exist
我在/mntnamed中创建了一个文件夹home，并安装sda2在/mnt/home.结果：
root@rescue:~# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md1 16G 1.5M 16G 1% /
/dev/sda1 16G 0 16G 0% /mnt
91.121.126.137:/home/pub/rescue.v8 1.8T 292G 1.4T 18% /nfs
tmpfs 16G 1.5M 16G 1% /rw
91.121.126.137:/home/pub/pro-power 1.8T 292G 1.4T 18% /power
91.121.126.137:/home/pub/commonnfs 1.8T 292G 1.4T 18% /common
tmpfs 16G 0 16G 0% /dev/shm
tmpfs 16G 10M 16G 1% /run
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 16G 0 16G 0% /sys/fs/cgroup
tmpfs 16G 444K 16G 1% /tmp
root@rescue:~# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath] [faulty]
md2 : inactive sda2[0](S) sdc2[4](S) sdd2[3](S) sdb2[2](S)
161738496 blocks
unused devices: <none>
答案1
你的mount命令没有意义。您正在挂载一个devtmpfs基于 RAM 的文件系统，/mnt名称为/dev/sda1。这根本没有引用文件系统/dev/sda。
也许你的意思是这样的：
mount /dev/sda1 /mnt
mkdir -p /mnt/home
mount /dev/sda2 /mnt/home
但考虑到您正在谈论 RAID 文件系统，即使这样也没有任何意义。如果 RAID 阵列是从/dev/sd[abcd]2或 /构建的，dev/sd[abcd]3那么您需要引用 RAID 设备/dev/md2，并且可能/dev/mdY（对于 的某些值Y）。