proxmox remove disk/partition with holder (500)

[zemerdon]

disk/partition '/dev/sdb' has a holder (500)

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root@rcdriftqld:/dev# lsblk
NAME               MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sdb                  8:16   0   7.1T  0 disk 
└─CCTV-CCTV_tmeta  252:3    0  15.9G  0 lvm  
sr0                 11:0    1  1024M  0 rom

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root@rcdriftqld:/dev# dmsetup ls
CCTV-CCTV_tmeta (252:3)

root@rcdriftqld:/dev# dmsetup remove -f CCTV-CCTV_tmeta

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root@rcdriftqld:/dev# vgdisplay
  
  --- Volume group ---
  VG Name               CCTV
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  12
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               <7.09 TiB
  PE Size               4.00 MiB
  Total PE              1858271
  Alloc PE / Size       1858177 / <7.09 TiB
  Free  PE / Size       94 / 376.00 MiB
  VG UUID               QTqHJs-j0fz-MJyM-UAqy-NVnh-Kxr8-IkyoK6
  

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root@rcdriftqld:/dev# vgremove CCTV

Do you really want to remove volume group "CCTV" containing 3 logical volumes? [y/n]: y
Removing pool CCTV/CCTV will remove 2 dependent volume(s). Proceed? [y/n]: y
  Logical volume "vm-100-disk-0" successfully removed.
  Logical volume "vm-100-disk-1" successfully removed.
  Logical volume "CCTV" successfully removed.
  Volume group "CCTV" successfully removed