[PVE-User] Incremental vzdump

[Gustavo]

El 03/03/2010 08:53 a.m., Adam escribió:
> 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.
>
> Many thanks,
> Adam
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Hi Adam,

Take a look at this script. It uses rsync for incremental backups to 
another server. It's well commented, and probably can be tailored to 
your needs.

http://wiki.openvz.org/Backup_a_running_container_over_the_network_with_ezvzdump

Hope this helps