QEMU backup to PBS 4.1 fails with "POST /fixed_index: 400 Bad Request: EINVAL: Invalid argument" on all VMs

[SoulOH]

• Environment:
  • PVE: 9.1.2 on node pve-jbc
  • PBS: 4.1.0 on Raspberry Pi 5 (raspberrypi5)
• Local vzdump (to local storage) works fine.
• proxmox-backup-client backup test.pxar from the PVE node to the same PBS datastore works fine.
• But any VM backup (vzdump to PBS storage) fails with:
  • On PVE:
    • VM XXX qmp command 'backup' failed - backup register image failed: command error: EINVAL: Invalid argument
  • On PBS:
    • GET /previous: 400 Bad Request: no valid previous backup
    • POST /fixed_index: 400 Bad Request: EINVAL: Invalid argument
    • backup ended but finished state is not set.
• This happens for all VMs, powered on or off.
• I also tried creating a new minimal VM (raw disk on directory storage, no snapshots) and the same error occurs.

 

[leesteken]

The official Proxmox Backup Server requires an 64-bit x86 processor and cannot run on Raspberry Pi: https://pbs.proxmox.com/docs/installation.html#system-requirements . Where did you get your PBS, and maybe the people who forked/ported it can provide support? EDIT: Can you test with an official PBS 4.1 on x86 hardware?