LVM ThinPool volume out of metadata

[wiredworm]

I've had a proxmox instance running for a while and one of the LVM ThinPool volumes is rather large, at just under 20TB.

Things had been going just fine but recently i've hit some issues and I think the issue is because i've managed to fully consume the metadata allocation for the volume.

An lvs command shows this:

  LV                       VG               Attr       LSize   Pool             Origin Data%  Meta%  Move Log Cpy%Sync Convert
  lvm-thinpool-001         lvm-thinpool-001 twi-aotzM- <20.74t                         93.75  100.00
  [lvm-thinpool-001_tdata] lvm-thinpool-001 Twi-ao---- <20.74t
  [lvm-thinpool-001_tmeta] lvm-thinpool-001 ewi-ao----  88.00m
  [lvol0_pmspare]          lvm-thinpool-001 ewi-------  88.00m

I was hoping I could add some additional space for the metadata but when doing so I get this:

root@proxmox:/var# lvextend --poolmetadatasize +128M lvm-thinpool-001/lvm-thinpool-001
  Insufficient free space: 32 extents needed, but only 0 available

My Linux skills are not super hot so i'm not sure if there are some additional commands I need to execute before I try the lvextend. Or perhaps i'm SOL and I need to migrate my files elsewhere and recreate the volume with a larger allocation for metadata. Do I read correctly that the above volume only allocated 88MB for that? Handy to know as it means I can make sure to manually specify a much larger allocation.

If anyone can help me recover from this i'd be very grateful.

 

[wiredworm]

Volume group output seems to suggest i've got no extents available. So not sure there is much I can do:

  --- Volume group ---
  VG Name               lvm-thinpool-001
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  192
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                13
  Open LV               10
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               20.74 TiB
  PE Size               4.00 MiB
  Total PE              5436892
  Alloc PE / Size       5436892 / 20.74 TiB
  Free  PE / Size       0 / 0

 

[ProxyUser]

Volume group output seems to suggest i've got no extents available. So not sure there is much I can do:

  --- Volume group ---
  VG Name               lvm-thinpool-001
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  192
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                13
  Open LV               10
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               20.74 TiB
  PE Size               4.00 MiB
  Total PE              5436892
  Alloc PE / Size       5436892 / 20.74 TiB
  Free  PE / Size       0 / 0

Thanks! Yes, I extended the VG hoping that would give me more space to work on. VG was about 94GB prior to the extension.