On 2023-06-05 11:52, Val Kulkov wrote:

On Mon, 5 Jun 2023 at 09:14, Alvin Starr via talk <talk@gtalug.org> wrote:
Does anybody know of an volume based backup solution that can work in an
incremental manner?

I am speaking here of a particular solution, not a general one. In Proxmox VE, backups of VMs can be performed in three modes: stop mode, suspend mode and snapshot mode. They differ by the length of VM downtime and the risk of losing consistency: https://pve.proxmox.com/wiki/Backup_and_Restore

Then, there is Borg, a highly performant non-snapshotting deduplicating backup tool: https://borgbackup.readthedocs.io/en/stable/deployment/image-backup.html There is also a wrapper for Borg, called Borgmatic, for ease of configuration and execution: https://torsion.org/borgmatic/


I can snapshot the volume and then backup the snapshot but that is a 40TB image.
Veeam tries to take a look at the file systems and zero unused space, like Borg appears to do, but that feature had to be disabled because it was causing random system crashes.

I will take a closer look at Borg.

There was once a tool called lvmsync but it seems to be a dead project.
There was also wyng-backup but that also looks to have gone away.

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Alvin Starr                   ||   land:  (647)478-6285
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