Snap on LVM

[ffsapher]

Hello to all proxmox enthusiasts.

At our company, we use a multipath-configured FC array(from old vmware clusters, netapp and ethernus mostly). We're currently running PVE8, but we'll be upgrading to PVE9 in the next few days.

We tested the new snap version on version 9, but with a 10TB VM, we need the same amount of space per snap, which is unacceptable.(with also huge inpact on performance)

However, we use Veeam on version 8. Imagine if Veeam could create efficient snaps during backups without any problems. We have, for example, a 10TB VM database on RAW LVM. Veeam creates a snap on a different disk for the data store directory and creates a .QCOW2 temp file. Even 30-hour backups aren't common, and we only want snaps for patching vulnerabilities, not for days at a time.

Could someone suggest how I could perform snapshots in a test environment like the Veeam Worker, but without using it? with reverse functionality of course

Best regards to everyone, and have a nice day!

 

[LnxBil]

Could someone suggest how I could perform snapshots in a test environment like the Veeam Worker, but without using it? with reverse functionality of course

You have to ask Veeam what strange things they do with their backup. I would assume they create a simple diff qemu file in which all writes are redirected, so that the actual disk itself does not change so that they can read consistently and afterwards they merge the accumulated writes back into the files.