[PVE-User] Why are images and rootdir not supported on CephFS?

[Gianni Milo]

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.thommen at 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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