Hi Dominik, Aha - I apologise - let me explain the use-case.
We have two Proxmox clusters in our lab - both are HA clusters, using hyper-converged Ceph to store the VM disk images. In each cluster, we have a template of various VM images (e.g. Windows 7, Windows 8.1, Windows 10 etc), in various different configurations/software combinations. We want the same templates to appear *under* each node because: - Redundancy/HA - if one of the nodes is down - Ceph can still function, and we can still spin-up VMs. However, if a template only appears under node1, and node1 dies - then we cannot use any templates anymore and the cluster is useless (even if the files are technically still accessible via Ceph) - Distributing VMs across the cluster - If all the templates appear under node1 - then when a user goes to clone it, it will default to node1. Proxmox currently doesn't have a feature to automatically distribute VMs across the cluster (see this thread for a discussion on the feature <https://forum.proxmox.com/threads/3-node-proxmox-ceph-cluster-how-to-automatically-distribute-vms-among-nodes.52443/>). If the templates appear under each node (even if they point to the same underlying file), it makes it easier to get users to understand you can spin them up there I tried to do it just now - this is what I did. I had a VM on node1. I converted it into a template: https://i.imgur.com/xlLXUy5.png - this refers to vm_storage:base-500-disk-0/base-100-disk-0,size=30G I then did a linked clone of this onto node2 - which I also converted into a template https://i.imgur.com/PUel6RB.png - this refers to vm_storage:base-100-disk-0/base-104-disk-0,size=30G Do you know the correct steps to go from a VM, to two templates on two different nodes, pointing to the same base image? Thanks, Victor On Mon, Mar 9, 2020 at 7:36 PM Dominik Csapak <d.csa...@proxmox.com> wrote: > On 3/7/20 9:46 PM, Victor Hooi wrote: > > Hi Dominik, > > > > hi, > > > Is there any way to have the templates available on each node in the > > cluster, without making separate copies for each one in Ceph? (That is - > > have them all point to the same underlying files). > > i still do not understand why you'd want this? > as you already tried, you can clone it across nodes already, why would > you need the templates on all nodes? > > > > > I tried making a thin clone from one node to another - and then when I > > converted to a template, it simply turned it into a full clone, and > > created a separate copy of the VM disk images - such that I had multiple > > copies of the same files in RBD. > > hmm? what exactly did you do and why do you think that they are > full clones? > > i just tested it here and converting a 'linked clone' to template > simply renames the vm disks to 'base-...' > > 'rbd ls -l' > > still shows me the correct parent image... > > kind regards > Dominik > > _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
