[PVE-User] pve-csync version of pve-zsync?

[Fabrizio Cuseo]

Hi.
There is some news regarding two-cluster replication ? I would like to use it in a DR scenario, with the big cluster that can have some VMs replicated on a small one (but different, and possibly in a different datacenter).

Something included in the proxmox gui will be really great and add a lot of value to proxmox itself.

Regards, Fabrizio Cuseo


----- Il 13-mar-18, alle 19:32, Alexandre DERUMIER aderumier at odiso.com ha scritto:

> Hi,
> 
> I have plans to implement storage replication for rbd in proxmox,
> like for zfs export|import.  (with rbd export-diff |rbd import-diff )
> 
> I'll try to work on it next month.
> 
> I'm not sure that currently a plugin infrastructe in done in code,
> and that it's able to manage storages with differents name.
> 
> Can't tell if it'll be hard to implement, but the workflow is almost the same.
> 
> I'll try to look also at rbd mirror, but it's only work with librbd in qemu, not
> with krbd,
> so it can't be implemented for container.
> 
> 
> ----- Mail original -----
> De: "Mark Adams" <mark at openvs.co.uk>
> À: "proxmoxve" <pve-user at pve.proxmox.com>
> Envoyé: Mardi 13 Mars 2018 18:52:21
> Objet: Re: [PVE-User] pve-csync version of pve-zsync?
> 
> Hi Alwin,
> 
> I might have to take another look at it, but have you actually done this
> with 2 proxmox clusters? I can't remember the exact part I got stuck on as
> it was quite a while ago, but it wasn't as straight forward as you suggest.
> I think you couldn't use the same cluster name, which in turn created
> issues trying to use the "remote" (backup/dr/whatever you wanna call it)
> cluster with proxmox because it needed to be called ceph.
> 
> The docs I was referring to were the ceph ones yes. Some of the options
> listed in that doc do not work in the current proxmox version (I think the
> doc hasn't been updated for newer versions...)
> 
> Regards,
> Mark
> 
> On 13 March 2018 at 17:19, Alwin Antreich <a.antreich at proxmox.com> wrote:
> 
>> On Mon, Mar 12, 2018 at 04:51:32PM +0000, Mark Adams wrote:
>> > Hi Alwin,
>> > 
>> > The last I looked at it, rbd mirror only worked if you had different
>> > cluster names. Tried to get it working with proxmox but to no avail,
>> > without really messing with how proxmox uses ceph I'm not sure it's
>> > feasible, as proxmox assumes the default cluster name for everything...
>> That isn't mentioned anywhere in the ceph docs, they use for ease of
>> explaining two different cluster names.
>> 
>> If you have a config file named after the cluster, then you can specifiy
>> it on the command line.
>> http://docs.ceph.com/docs/master/rados/configuration/
>> ceph-conf/#running-multiple-clusters
>> 
>> > 
>> > Also the documentation was a bit poor for it IMO.
>> Which documentation do you mean?
>> ? -> http://docs.ceph.com/docs/master/rbd/rbd-mirroring/
>> 
>> > 
>> > Would also be nice to choose specifically which VM's you want to be
>> > mirroring, rather than the whole cluster.
>> It is done either per pool or image separately. See the link above.
>> 
>> > 
>> > I've manually done rbd export-diff and rbd import-diff between 2 separate
>> > proxmox clusters over ssh, and it seems to work really well... It would
>> > just be nice to have a tool like pve-zsync so I don't have to write some
>> > script myself. Seems to me like something that would be desirable as part
>> > of proxmox as well?
>> That would basically implement the ceph rbd mirror feature.
>> 
>> > 
>> > Cheers,
>> > Mark
>> > 
>> > On 12 March 2018 at 16:37, Alwin Antreich <a.antreich at proxmox.com>
>> wrote:
>> > 
>> > > Hi Mark,
>> > > 
>> > > On Mon, Mar 12, 2018 at 03:49:42PM +0000, Mark Adams wrote:
>> > > > Hi All,
>> > > > 
>> > > > Has anyone looked at or thought of making a version of pve-zsync for
>> > > ceph?
>> > > > 
>> > > > This would be great for DR scenarios...
>> > > > 
>> > > > How easy do you think this would be to do? I imagine it wouId it be
>> quite
>> > > > similar to pve-zsync, but using rbd export-diff and rbd import-diff
>> > > instead
>> > > > of zfs send and zfs receive? so could the existing script be
>> relatively
>> > > > easily modified? (I know nothing about perl....)
>> > > > 
>> > > > Cheers,
>> > > > Mark
>> > > > _______________________________________________
>> > > > pve-user mailing list
>> > > > pve-user at pve.proxmox.com
>> > > > https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>> > > Isn't ceph mirror already what you want? It can mirror a image or a
>> > > whole pool. It keeps track of changes and serves remote image deletes
>> > > (adjustable delay).
>> > > 
>> 
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