[PVE-User] External Ceph cluster for PVE6.1-5

Alwin Antreich a.antreich at proxmox.com
Wed Jan 29 14:26:36 CET 2020

On Wed, Jan 29, 2020 at 01:45:51PM +0100, Mark Schouten wrote:
> On Wed, Jan 29, 2020 at 09:23:53AM +0100, Alwin Antreich wrote:
> > > We just upgraded one of our clusters to PVE 6.1-5. It's not hyperconverged, so Ceph is running on an external cluster. That cluster runs Luminous, and we installed the Nautilus client on the proxmox-cluster. I can't find any documentation if this is supported or not. 
> > The stock Ceph version on PVE 6 is Luminous. ;)
> https://pve.proxmox.com/wiki/Roadmap#Proxmox_VE_6.1 and the installed
> packages suggest otherwise:
> root at proxmox2-1:~# dpkg -l | grep ceph
> ii  ceph-common                          14.2.6-pve1
On a fresh Proxmox VE 6 install, the package is Luminous. It's the
current version in Debian Buster. After using pveceph install (or GUI),
the Nautilus packages are installed.

> > > Is it OK to have a Nautilus client on Proxmox for an external Luminous cluster, or will that break stuff?
> > Yes, the client should work one LTS version apart.
> > Luminous <- Nautilus -> Octopus.
> I know Ceph does that. But I did have lost data in a PVE4 to PVE5
> upgrade where Ceph was not yet upgraded and images got shrunk because
> Ceph Hammer behaved differently from Ceph Luminous. I am wondering if
> that is the case here too.
Not to my knowledge. Maybe someone else has more insight. You might also
want to consider posting on the ceph-user list.


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