Linux – How to remove bad disk from LVM2 with the less data loss on other PVs

filesystemslinuxlvmUbuntu

I had a LVM2 volume with two disks. The larger disk became corrupt, so I cant pvmove.
What is the best way to remove it from the group to save the most data from the other disk?
Here is my pvdisplay output:

Couldn't find device with uuid WWeM0m-MLX2-o0da-tf7q-fJJu-eiGl-e7UmM3.
  --- Physical volume ---
  PV Name               unknown device
  VG Name               media
  PV Size               1,82 TiB / not usable 1,05 MiB
  Allocatable           yes (but full)
  PE Size               4,00 MiB
  Total PE              476932
  Free PE               0
  Allocated PE          476932
  PV UUID               WWeM0m-MLX2-o0da-tf7q-fJJu-eiGl-e7UmM3

  --- Physical volume ---
  PV Name               /dev/sdb1
  VG Name               media
  PV Size               931,51 GiB / not usable 3,19 MiB
  Allocatable           yes (but full)
  PE Size               4,00 MiB
  Total PE              238466
  Free PE               0
  Allocated PE          238466
  PV UUID               oUhOcR-uYjc-rNTv-LNBm-Z9VY-TJJ5-SYezce

So I want to remove the unknown device (not present in the system).
Is it possible to do this without a new disk ? The filesystem is ext4.

Best Answer

# pvdisplay
Couldn't find device with uuid EvbqlT-AUsZ-MfKi-ZSOz-Lh6L-Y3xC-KiLcYx.
  --- Physical volume ---
  PV Name               /dev/sdb1
  VG Name               vg_srvlinux
  PV Size               931.51 GiB / not usable 4.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              238466
  Free PE               0
  Allocated PE          238466
  PV UUID               xhwmxE-27ue-dHYC-xAk8-Xh37-ov3t-frl20d

  --- Physical volume ---
  PV Name               unknown device
  VG Name               vg_srvlinux
  PV Size               465.76 GiB / not usable 3.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              119234
  Free PE               0
  Allocated PE          119234
  PV UUID               EvbqlT-AUsZ-MfKi-ZSOz-Lh6L-Y3xC-KiLcYx



# vgreduce --removemissing --force vg_srvlinux


  Couldn't find device with uuid EvbqlT-AUsZ-MfKi-ZSOz-Lh6L-Y3xC-KiLcYx.
  Removing partial LV LogVol00.
  Logical volume "LogVol00" successfully removed
  Wrote out consistent volume group vg_srvlinux

# pvdisplay

 --- Physical volume ---
  PV Name               /dev/sdb1
  VG Name               vg_srvlinux
  PV Size               931.51 GiB / not usable 4.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              238466
  Free PE               238466
  Allocated PE          0
  PV UUID               xhwmxE-27ue-dHYC-xAk8-Xh37-ov3t-frl20d

now all it work fine!

Related Topic