Re: Recovering from a failed pvmove

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I have now managed to fix the problem. I ran vgcfgbackup, then made a copy of the backup for safety purposes. I than hand edited the original backup to remove the missing pv (pv4), the root lv and the pvmove0 lv. I then than vgcfgrestore. Everything is working.

There must be a better way of doing this. Hand editing cfg files is not safe or sensible. What have I missed?

Roger

On 28 June 2022 07:38:48 Roger James <roger@xxxxxxxxxxxxxxxxxxxxx> wrote:

Hi,

I am struggling to recover from a failed pvmove. Unfortunately I only have a limited knowledge of lvm. I setup my lvm configuration many years ago.

I was trying to move a lv to a SSD using pvmove. Unfortunately my brand new SSD choose that moment to fail (never buy cheap SSDs, lesson learnt!").

This is the current status.

roger@dragon:~$ sudo pvs
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  WARNING: VG wd is missing PV uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ (last written to [unknown]).
  PV VG Fmt Attr PSize PFree
  /dev/sda1 wd lvm2 a-- <465.76g 0
  /dev/sdb1 wd lvm2 a-- <465.76g <80.45g
  /dev/sdc2 wd lvm2 a-- 778.74g 278.74g
  /dev/sdd1 wd lvm2 a-- <465.76g 0
  [unknown] wd lvm2 a-m <784.49g 685.66g
roger@dragon:~$ sudo lvs
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  WARNING: VG wd is missing PV uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ (last written to [unknown]).
  LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
  home wd -wi------- 1.46t                                               
  root wd -wI-----p- <108.83g                                               
  swap wd -wi------- 8.00g                                               
  work wd -wi------- 200.00g                                               
roger@dragon:~$ sudo vgs
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  WARNING: VG wd is missing PV uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ (last written to [unknown]).
  VG #PV #LV #SN Attr VSize VFree
  wd 5 4 0 wz-pn- 2.89t 1.02t

This is a recap of what I have tried so far.

roger@dragon:~$ sudo pvmove --abort
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  WARNING: VG wd is missing PV uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ (last written to [unknown]).
  LVM command executed by lvmpolld failed.
  For more information see lvmpolld messages in syslog or lvmpolld log file.
roger@dragon:~$ sudo vgreduce --removemissing wd
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  WARNING: VG wd is missing PV uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ (last written to [unknown]).
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  WARNING: Partial LV root needs to be repaired or removed.
  WARNING: Partial LV pvmove0 needs to be repaired or removed.
  There are still partial LVs in VG wd.
  To remove them unconditionally use: vgreduce --removemissing --force.
  To remove them unconditionally from mirror LVs use: vgreduce --removemissing --mirrorsonly --force.
  WARNING: Proceeding to remove empty missing PVs.
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
roger@dragon:~$ sudo lvchange -an wd/root
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  WARNING: VG wd is missing PV uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ (last written to [unknown]).
roger@dragon:~$ sudo vgreduce --removemissing wd
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  WARNING: VG wd is missing PV uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ (last written to [unknown]).
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  WARNING: Partial LV root needs to be repaired or removed.
  WARNING: Partial LV pvmove0 needs to be repaired or removed.
  There are still partial LVs in VG wd.
  To remove them unconditionally use: vgreduce --removemissing --force.
  To remove them unconditionally from mirror LVs use: vgreduce --removemissing --mirrorsonly --force.
  WARNING: Proceeding to remove empty missing PVs.
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
roger@dragon:~$ sudo lvremove wd/pvmove0
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  WARNING: VG wd is missing PV uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ (last written to [unknown]).
  WARNING: Couldn't find device with uuid uMtjop-PmMT-603f-GWWQ-fR4f-s4Sw-XSKNXZ.
  Can't remove locked logical volume wd/pvmove0.

I am quite happy to loose the root lv, I just need the home and work lvs. What am I missing?

Help!

Roger

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