ReadMeFeed / Community knowledge
Real questions. Useful conversations. Find the people who know your stack.
A decision guide for picking a Proxmox VE storage backend: compare LVM-thin, ZFS, and Ceph RBD on latency, snapshots, migration, and complexity, with a concrete ZFS validation walkthrough.
A Ceph OSD marked down or out in Proxmox usually means a crashed daemon, a failing disk, or a network partition. Here's how to tell them apart and fix each safely.
We have just installed a cluster of 6 Proxmox servers, using 3 nodes as Ceph storage, and 3 nodes as compute nodes. We are experiencing strange and critical issues with the performances and stability of our cluster. VMs and Proxmox web access tends to hang for no obvious reason, from a few seconds to a few minutes - when accessing via SSH, RDP or VNC console
Snapshot consistency limits on active VMs with Ceph-backed volumes Harvester’s snapshot API allows administrators to capture a VM’s disk state for backup and recovery. The API is documented for both local and Ceph‑backed volumes, but the guarantees around block‑level consistency when the VM is actively writing are not explicitly addressed. The retention poli
Context Cinder incremental backups on the Ceph/RBD backend form a parent-child chain where each child backup depends on its parent for a full restore. The control plane records the relationship, but the backend objects themselves must remain intact. Problem A restore request for a child incremental backup fails when the parent backup has been deleted or its
answered · 13 Jul 2026, 02:56 UTC
proxmox
openstack