cannot migrate containers from storage type 'lvmthin' to 'zfspool'

[xkill]

I have a Proxmox with LVM thin (datathinpool), I want to migrate all the container to a new server using ZFS (vmdata)


But when I try to do it I got:

# pct migrate 120 lokol --restart --target-storage vmdata
2025-01-16 13:53:22 shutdown CT 120
2025-01-16 13:53:26 use dedicated network address for sending migration traffic (192.168.3.2)
2025-01-16 13:53:26 starting migration of CT 120 to node 'lokol' (192.168.3.2)
2025-01-16 13:53:27 found local volume 'datathinpool:vm-120-disk-0' (in current VM config)
2025-01-16 13:53:27 ERROR: storage migration for 'datathinpool:vm-120-disk-0' to storage 'vmdata' failed - cannot migrate from storage type 'lvmthin' to 'zfspool'
2025-01-16 13:53:27 aborting phase 1 - cleanup resources
2025-01-16 13:53:27 ERROR: found stale volume copy 'datathinpool:vm-120-disk-0' on node 'lokol'
2025-01-16 13:53:27 start final cleanup
2025-01-16 13:53:27 start container on source node
2025-01-16 13:53:30 ERROR: migration aborted (duration 00:00:08): storage migration for 'datathinpool:vm-120-disk-0' to storage 'vmdata' failed - cannot migrate from storage type 'lvmthin' to 'zfspool'



How can I do it?

 

[Kingneutron]

Backup all LXC to Proxmox Backup Server (not strictly necessary, but dedup really helps) and restore on lokol node

Either that or create lvm-thin storage on lokol large enough to handle 1 migration at a time, then move LXC storage to ZFS

https://github.com/kneutron/ansitest/blob/master/proxmox/proxmox-create-additional-lvm-thin.sh