这就是我试图拯救的虚拟机的驱动器设置。
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 1024M 0 rom
vda 252:0 0 100G 0 disk
├─vda1 252:1 0 1M 0 part
├─vda2 252:2 0 1G 0 part /boot
└─vda3 252:3 0 99G 0 part
└─ubuntu--vg-ubuntu--lv 253:1 0 199G 0 lvm /
ubuntu--vg-ubuntu--lv-missing_1_0 253:0 0 100G 0 lvm
└─ubuntu--vg-ubuntu--lv 253:1 0 199G 0 lvm /
$ sudo pvdisplay -m
/dev/ubuntu-vg/ubuntu-lv: read failed after 0 of 4096 at 213666168832: Input/output error
/dev/ubuntu-vg/ubuntu-lv: read failed after 0 of 4096 at 213666226176: Input/output error
WARNING: Device for PV lm1rJY-LRuU-jpPH-rHeS-4u1u-kRP3-Su9tuH not found or rejected by a filter.
--- Physical volume ---
PV Name /dev/vda3
VG Name ubuntu-vg
PV Size <99.00 GiB / not usable 1.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 25343
Free PE 0
Allocated PE 25343
PV UUID ItQIGk-0hzo-clpv-e0ZA-Cp8M-uoXO-c0W4G4
--- Physical Segments ---
Physical extent 0 to 25342:
Logical volume /dev/ubuntu-vg/ubuntu-lv
Logical extents 0 to 25342
--- Physical volume ---
PV Name [unknown]
VG Name ubuntu-vg
PV Size 100.00 GiB / not usable 4.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 25599
Free PE 0
Allocated PE 25599
PV UUID lm1rJY-LRuU-jpPH-rHeS-4u1u-kRP3-Su9tuH
--- Physical Segments ---
Physical extent 0 to 25598:
Logical volume /dev/ubuntu-vg/ubuntu-lv
Logical extents 25343 to 50941
有趣的是 df 显示一切都正常：
$ df -hT
Filesystem Type Size Used Avail Use% Mounted on
udev devtmpfs 5.7G 0 5.7G 0% /dev
tmpfs tmpfs 1.2G 876K 1.2G 1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv ext4 196G 45G 143G 24% /
tmpfs tmpfs 5.8G 0 5.8G 0% /dev/shm
tmpfs tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs tmpfs 5.8G 0 5.8G 0% /sys/fs/cgroup
/dev/vda2 ext4 976M 146M 764M 16% /boot
tmpfs tmpfs 1.2G 0 1.2G 0% /run/user/1000
但显然不是：
$ sudo pvscan --cache
/dev/ubuntu-vg/ubuntu-lv: read failed after 0 of 4096 at 213666168832: Input/output error
/dev/ubuntu-vg/ubuntu-lv: read failed after 0 of 4096 at 213666226176: Input/output error
这很危险，但我尝试删除丢失的卷。但即使使用 --force，它也没有用，我真的不知道如何恢复此虚拟机。任何帮助都非常感谢。
$ sudo lvm
lvm> vgreduce --removemissing --force ubuntu-vg
WARNING: Device for PV lm1rJY-LRuU-jpPH-rHeS-4u1u-kRP3-Su9tuH not found or rejected by a filter.
WARNING: Removing partial LV ubuntu-vg/ubuntu-lv.
Logical volume ubuntu-vg/ubuntu-lv contains a filesystem in use.