[PVE-User] Incremental vzdump

[Martin Maurer]

> -----Original Message-----
> From: pve-user-bounces at pve.proxmox.com [mailto:pve-user-
> bounces at pve.proxmox.com] On Behalf Of Adam
> Sent: Mittwoch, 03. März 2010 12:54
> To: pve-user at pve.proxmox.com
> Subject: [PVE-User] Incremental vzdump
> 
> Hello,
> 
> We are running into a few issues with Proxmox's built in backups. We
> use
> the snapshot option for OpenVZ containers, but are finding that it is
> impossible to run regular (say daily) snapshots of large containers due
> to the time taken to generate the archive. This is most obvious on
> large
> containers, with lots of maildirs containing large amounts of small
> files.
> 
> Whilst we currently also use a commercial backup solution which works
> well, we think incremental backups would be a nice addition to vzdump.
> Our idea is for a new vzdump 'incremental' snapshot to rsync the LVM
> snapshot to an output directory, rather than tar file. Subsequent
> backups can then just rsync changed files from the LVM snapshot to the
> directory.
> 
> Therefore our questions are:
> - Is anything like this already planned for a future release?
> - If not, would proxmox be open to patches if we were to look into
> implementing this? We exclusively use OpenVZ containers and are
> therefore unsure of the impact to the KVM side.
> 
> Apologies if this is not the correct place for this discussion, I was
> unable to find a development list.

You are on the right list (there is only one in the moment).

We do not think that Proxmox VE (vzdump) should be a full backup solutions, there are already a lot of them around with millions of features. The project will focus on the core (Virtualization & Management). If you keep the container small, vzdump works quite well - use bind mounts to include the big data parts.

Just think of Bacula and also other open source solution - vzdump can never cover all this. I would use a combination of a backup and vzdump, you already went this way.  

But yes, we accept patches and enhancements for vzdump, I suggest you post in detail what you plan here (before you start implementing)  and you can post patches or if needed, you can get access to svn also. 

Thanks,
Br, Martin
 
> 
> Many thanks,
> Adam
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