How to shrink ceph, shrink lvm, then grow local?

[dsam]

HI all,

I have a four node PVE cluster, single 500GB disk on each node.
All nodes are configured with Ceph on lvm.



The lvm is taking most of the disk, with only about 50GB left for local storage.
I want to move a couple of VM disks from ceph to local.

How can I shrink the Ceph OSD, then shrink the lvm and claim back some of the space on local? (aiming for 120GB for local storage).

Thanks

 

[gurubert]

You can only "shrink" an OSD by removing it from the Ceph cluster and deploy a new OSD.