BTRFS support dropped in 12.3.1.1139?

[nicolassimondiddi]

Hello,

Just noticed yesterday, upgrading my home lab to 12.3.1.1139 than support for BTRFS storage seems to have been dropped.
Doc (now?) says it's unsupported and backup and restore no longer works, but it has been working since the first beta release of Veeam backup for Proxmox.

Code: Select all

21.03.2025 21:30:18 :: Disk Sata0 has been skipped due to unsupported storage type (iscsi/iscsidirect/btrfs)  

Now I'm reverting to 12.3.0.310 for this.
Does someone know when BTRFS will be supported again? I don't get why Veeam implements breaking changes like this in a security patch.

Have a good day,

[Regnor]

Actually BTRFS has never been supported and the limitation exists since day one. I can't say why it worked for you before, or if a check was implemented with the latest release. But regardless of the version, it's not supported.

[BostjanUNIJA]

On the same boat here.

Opened a support ticket:
Veeam Support - Case # 07641525 - After upgrading VBR to latest version PROXMOX vm backup starts failing

Didn't get quite big help from support, just straight answer; 'this isnt supported' & no explanation (yet) why this worked in previous version :/

So we had to act on our own, as a workaround deployed Veeam Linux agent to continue backup of customers critical production server.

Downgrading to lower version of VBR (we thought about it also, but didnt choose that path).

Also from encrypted backups perspective we are now thinking about switching all VM's backup on ProxMox hypervisior with Linux agent backup approach.

How come Proxmox VM's backup don't support encrypted backups like Vmware&Hyper-V?

[nicolassimondiddi]

Actually BTRFS has never been supported and the limitation exists since day one. I can't say why it worked for you before, or if a check was implemented with the latest release. But regardless of the version, it's not supported.

That's sad, from our test BTRFS works way better than any other file system (except ceph) with Proxmox.