[pve-devel] [PATCH pve-storage 4/4] Add support for creating LXC snapshot backup

[Michael Rasmussen]

On Thu, 15 Jun 2017 23:03:56 +0200
Andreas Steinel <a.steinel at gmail.com> wrote:

> 
> Compared to what? Of course not local ZFS, because everything applies
> also to local ZFS. TRIM support is the only point I understand in
> comparison to "ordinary" iSCSI backed on "fat" files.
> 
Compared to ZFS over NFS. NFS put a lot of work to the CPU for a
reduced performance compared to ZFS over iSCSI and I also forgot to
mention that ZFS over iSCSI also supports MPIO which is also lacking in
ZFS over NFS.

> I thought, that ZFS-over-iSCSI is superior to iSCSI because of the ZFS
> features, therefore ZFS-over-NFS has the same ZFS features, but as a
> file storage for container. No ordinary NFS has support for snapshots
> or quota directed by PVE, so this would be a real benefit. Also, you
> have a clusterwide-shared ZFS for KVM and LXC. In my opinion: it's the
> dream, isn't it?
My new FreeNAS plugin also supports containers as you can read from the
release notes. This is why I see no usecase for ZFS over NFS. Why use
ZFS over NFS when the FreeNAS plugin supports all the features
supported by Proxmox?

                    VM          CT
create              YES         YES
delete              YES         YES
resize              (YES)       (YES) Note 1
snapshot
   offline          YES         YES
   live             YES         "YES" (state is not saved)
backup
   snapshot         YES         YES
   standby          YES         YES
   offline          YES         YES
clone
   full             YES         YES (Unavailable in GUI)
   linked           YES         YES (Unavailable in GUI)

-- 
Hilsen/Regards
Michael Rasmussen

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