Thank you for the link.
Even though Fabian Gruenbichler writes in the bugreport
(https://bugzilla.proxmox.com/show_bug.cgi?id=2490#c2) that Ceph RBD
offers all features of CephFS, this doesn't seem to be true(?), as
CephFS supports "vztmpl iso backup snippets" and Ceph RBD "images
rootdir" (https://pve.proxmox.com/pve-docs/chapter-pvesm.html), so these
two storage types are complementary and RBD cannot replace CephFS.
What would be a good practice (CephFS and RBD are already set up):
Create an RBD storage on the same (PVE based) Ceph storage that already
has CephFS on top of it and use one for templates and backups and the
other for images and rootdir?
Won't it create problems when using the same Ceph pool with CephFS /and/
RBD (this is probably rather a Ceph question, though)
Additionally this might create problems with our inhouse tape backup, as
I don't think it supports backing up object storage...
frank
On 15/02/2020 00:38, Gianni Milo wrote:
This has been discussed in the past, see the post below for some answers...
https://www.mail-archive.com/pve-user@pve.proxmox.com/msg10160.html
On Fri, 14 Feb 2020 at 22:57, Frank Thommen <f.thom...@dkfz-heidelberg.de>
wrote:
Dear all,
the PVE documentation on
https://pve.proxmox.com/pve-docs/chapter-pvesm.html#_storage_types says,
that "[File level based storage technologies] allow you to store content
of any type". However I found now - after having combined all available
disks in a big CephFS setup - that this is not true for CephFS, which
does not support images and rootdir.
What is the reason, that of all filesystens, CephFS doesn't support the
main PVE content type? :-)
Ceph RPD on the other hand, doesn't support backup.
This seems to rule our Ceph (in whatever variant) as an unifying, shared
storage for PVE. Or do I miss an important point here?
Frank
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