วิธีลบดิสก์ที่ไม่ดีออกจาก LVM2 โดยมีการสูญเสียข้อมูลน้อยลงใน PVs อื่น ๆ

ฉันมีโวลุ่ม LVM2 พร้อมดิสก์สองตัว ดิสก์ที่ใหญ่ขึ้นเสียหายดังนั้นฉันจึงไม่สามารถทำ pvmove ได้ วิธีที่ดีที่สุดในการลบออกจากกลุ่มเพื่อบันทึกข้อมูลส่วนใหญ่จากดิสก์อื่นคืออะไร นี่คือเอาต์พุต pvdisplay ของฉัน:

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

ดังนั้นฉันต้องการลบอุปกรณ์ที่ไม่รู้จัก (ไม่มีอยู่ในระบบ) เป็นไปได้ไหมถ้าทำได้โดยไม่มีดิสก์ใหม่ ระบบไฟล์คือ ext4

# 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

ตอนนี้มันทำงานได้ดี!

จากvgreduceหน้าคน:

   --removemissing
          Removes all missing physical volumes from the volume group, if there are no  logical  volumes
          allocated  on  those.  This resumes normal operation of the volume group (new logical volumes
          may again be created, changed and so on).

          If this is not possible (there are logical volumes referencing the missing physical  volumes)
          and  you  cannot or do not want to remove them manually, you can run this option with --force
          to have vgreduce remove any partial LVs.

          Any logical volumes and dependent snapshots that were partly on the missing disks get removed
          completely. This includes those parts that lie on disks that are still present.

          If  your  logical  volumes  spanned several disks including the ones that are lost, you might
          want to try to salvage data first by  activating  your  logical  volumes  with  --partial  as
          described in lvm (8).