我有一个 Centos 7 系统，安装了 4 个驱动器。它们在 BIOS 中设置为 2 个镜像对。系统安装时，默认安装只看到其中一对并安装在其上。我现在正在尝试找出要安装哪个驱动器才能访问另一个驱动器对。从 fdisk -l 可以看出，驱动器 sdc 是 Centos 选择的驱动器，sdd 是镜像。因此，我应该挂载 sda，而 sdb 将成为它的镜像。但我怎样才能确定呢？它们是否以某种方式反向完成，其中 sdd 是主要的，sdc 是镜像，因此我应该挂载 sdb？ df -u 似乎没有提供任何线索。
df -h 产生这个...
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/centos-root 52403200 1269720 51133480 3% /
devtmpfs 3962440 0 3962440 0% /dev
tmpfs 3971896 0 3971896 0% /dev/shm
tmpfs 3971896 8872 3963024 1% /run
tmpfs 3971896 0 3971896 0% /sys/fs/cgroup
/dev/mapper/centos-home 914001876 690184 913311692 1% /home
/dev/mapper/ddf1_4c5349202020202080862925000000004711471100001e78p1 508588 167460 341128 33% /boot
这是 fdisk -l
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes, 1953525168 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
Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes, 1953525168 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
Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes, 1953525168 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
Disk label type: dos
Disk identifier: 0x000bd18a
Device Boot Start End Blocks Id System
/dev/sdc1 * 2048 1026047 512000 83 Linux
/dev/sdc2 1026048 1951170559 975072256 8e Linux LVM
Disk /dev/sdd: 1000.2 GB, 1000204886016 bytes, 1953525168 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
Disk label type: dos
Disk identifier: 0x000bd18a
Device Boot Start End Blocks Id System
/dev/sdd1 * 2048 1026047 512000 83 Linux
/dev/sdd2 1026048 1951170559 975072256 8e Linux LVM
Disk /dev/mapper/ddf1_4c5349202020202080862925000000004711471100001e78: 999.0 GB, 998999326720 bytes, 1951170560 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
Disk label type: dos
Disk identifier: 0x000bd18a
Device Boot Start End Blocks Id System
/dev/mapper/ddf1_4c5349202020202080862925000000004711471100001e78p1 * 2048 1026047 512000 83 Linux
/dev/mapper/ddf1_4c5349202020202080862925000000004711471100001e78p2 1026048 1951170559 975072256 8e Linux LVM
Disk /dev/mapper/ddf1_4c5349202020202080862925000000004711471100001e78p1: 524 MB, 524288000 bytes, 1024000 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
Disk /dev/mapper/ddf1_4c5349202020202080862925000000004711471100001e78p2: 998.5 GB, 998473990144 bytes, 1950144512 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
Disk /dev/mapper/centos-swap: 8321 MB, 8321499136 bytes, 16252928 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
Disk /dev/mapper/centos-root: 53.7 GB, 53687091200 bytes, 104857600 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
Disk /dev/mapper/centos-home: 936.4 GB, 936395145216 bytes, 1828896768 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
Disk /dev/mapper/ddf1_4c53492020202020808629250000000047114711000028a0: 999.0 GB, 998999326720 bytes, 1951170560 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
答案1
考虑到您的驱动器位于镜像中，您不会直接访问它们（使用/dev/sd*），而是使用该/dev/mapper/ddf*设备。
您有两个ddf设备：
/dev/mapper/ddf1_4c53492020202020808629250000000047114711000028a0出于/dev/sda和/dev/sdb/dev/mapper/ddf1_4c5349202020202080862925000000004711471100001e78出于/dev/sdc和/dev/sdd
/dev/mapper/ddf1_4c5349202020202080862925000000004711471100001e78有两个分区/dev/mapper/ddf1_4c5349202020202080862925000000004711471100001e78p1和/dev/mapper/ddf1_4c5349202020202080862925000000004711471100001e78p2，第二个分区是和的LVM卷。/dev/mapper/centos-swap/dev/mapper/centos-root/dev/mapper/centos-home
所以您正在寻找的驱动器是/dev/mapper/ddf1_4c53492020202020808629250000000047114711000028a0.你必须进行分区和填充:)