Proxmox 9 upgrade : ceph error during check

Hey all,

I'm working on upgrading my cluster. Current setup is 3x Proxmox 8.4.1, running Ceph 19.2.2 Squid. Upgraded Ceph this morning going 17->18->19. Everything green on that front.

When I run the pre-check for Proxmox9 upgrade I get this error :

FAIL: The Ceph configuration of the following externally managed RBD storages needs to be updated:

ceph-rbd-pool1

I can't find any details that would allow me to understand what exactly needs to be updated or how. Only thing I could find was looking at keyring, which was properly set.

Anyone got ideas on how to proceed next?