我有 linux ubuntu 11 (bullseye)，带有 raid5、3 个 2TB 磁盘，我想添加一个 2TB 磁盘。我按照手册操作，但在执行 umount 命令后，我丢失了阵列。
当执行 lsblk 时，我发现我没有安装数组，这对我来说是合乎逻辑的。lsblk 输出：
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 238.5G 0 disk
├─sda1 8:1 0 512M 0 part /boot/efi
├─sda2 8:2 0 488M 0 part /boot
└─sda3 8:3 0 237.5G 0 part
├─SRV--vg-root 254:0 0 236.5G 0 lvm /
└─SRV--vg-swap_1 254:1 0 976M 0 lvm [SWAP]
sdb 8:16 0 1.8T 0 disk
└─sdb1 8:17 0 1.8T 0 part
sdc 8:32 0 1.8T 0 disk
└─sdc1 8:33 0 1.8T 0 part
sdd 8:48 0 1.8T 0 disk
sde 8:64 0 1.8T 0 disk
└─sde1 8:65 0 1.8T 0 part
但是当我尝试使用本手册组装阵列时我执行以下命令：
sudo mdadm --assemble --force /dev/md0 /dev/sdb /dev/sdc /dev/sde
并收到以下输出：
mdadm: Cannot assemble mbr metadata on /dev/sdb
mdadm: /dev/sdb has no superblock - assembly aborted
fdisk -l 输出为：
Disk /dev/sdc: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors
Disk model: WDC WD20EZBX-00A
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 16BEE218-DD7C-11EE-8CF6-D8CB8A1409C0
Device Start End Sectors Size Type
/dev/sdc1 2048 3907028991 3907026944 1.8T Microsoft basic data
Disk /dev/sdb: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors
Disk model: WDC WD20EZBX-22A
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 16B93AE7-DD7C-11EE-8CF6-D8CB8A1409C0
Device Start End Sectors Size Type
/dev/sdb1 2048 3907028991 3907026944 1.8T Microsoft basic data
Disk /dev/sdd: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors
Disk model: WDC WD20EZBX-00A
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: BF7FEEC8-7DCE-0A4D-85EA-0AA18AB0EBD7
Disk /dev/sde: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors
Disk model: WDC WD20EZBX-22A
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 16C52C55-DD7C-11EE-8CF6-D8CB8A1409C0
Device Start End Sectors Size Type
/dev/sde1 2048 3907028991 3907026944 1.8T Microsoft basic data
Disk /dev/sda: 238.47 GiB, 256060514304 bytes, 500118192 sectors
Disk model: PLEXTOR PX-256M6
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: 37957460-EE75-440F-AC0D-F3333B740269
Device Start End Sectors Size Type
/dev/sda1 2048 1050623 1048576 512M EFI System
/dev/sda2 1050624 2050047 999424 488M Linux filesystem
/dev/sda3 2050048 500117503 498067456 237.5G Linux LVM
Disk /dev/mapper/SRV--vg-root: 236.53 GiB, 253973495808 bytes, 496041984 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/SRV--vg-swap_1: 976 MiB, 1023410176 bytes, 1998848 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
据我所知，我毁了我的阵列。是这样吗？我怎样才能重新组装我的阵列而不丢失数据？ 是的，我已经备份了重要的东西，所以如果必须的话，我可以建立一个新阵列。