1 TB SSD NVME - only 800 GiB used

  1. You need to know how much space you have.
  2. Extend the vm–pool

example :

[root@dom0 51lieal]# vgs
  VG  #PV  #LV  #sn Attr  VSize  VFree
  qubes_dom0  2  60  0  wz--n- 1.37t  99.97g

[root@dom0 51lieal]# lvextend -L +99.97GiB /dev/mapper/qubes_dom0-vm--pool -r

Wait for some time, and then your vm-pool wlll extend.

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