Ceph Server

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Revision as of 09:11, 17 February 2020 by Thomas Lamprecht (talk | contribs) (fix thesis link)
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Yellowpin.svg Note: This article got replaced by our reference documentation's ceph chapter: https://pve.proxmox.com/pve-docs/chapter-pveceph.html

Recommended hardware

Take a look at our Proxmox VE Ceph Benchmark 2018/02 for possible hardware decisions. https://www.proxmox.com/en/downloads/item/proxmox-ve-ceph-benchmark

Further readings about Ceph

Ceph comes with plenty of documentation here. Even better, the dissertation from the creator of Ceph - Sage A. Weil - is also available. By reading that thesis you can get a deep insight how it works.

Video Tutorials

Proxmox YouTube channel

You can subscribe to our Proxmox VE Channel on YouTube to get updates about new videos.

Ceph Misc

Upgrading existing Ceph Server

restore lxc from zfs to ceph

if lxc is on zfs with compression the actual disk usage can be far greater then expected. see https://forum.proxmox.com/threads/lxc-restore-fail-to-ceph.32419/#post-161287

One way to know actual disk usage:

restore backup to a ext4 directory and run du -sh , then do restore manually specifying target disk size.

scsi setting

make sure that you use virtio-scsi controller (not LSI), see VM options. I remember some panic when using LSI recently but I did not debug it further as modern OS should use virtio-scsi anyways. https://forum.proxmox.com/threads/restarted-a-node-some-kvms-on-other-nodes-panic.32806