[PVE-User] Failed backups of stopped machines

[Sven]

Hello,

in the last few days, there have been some backup errors. The log is 
always the same:

> INFO: Starting Backup of VM 147 (qemu)
> INFO: Backup started at 2023-01-06 02:55:37
> INFO: status = stopped
> INFO: backup mode: stop
> INFO: ionice priority: 7
> INFO: VM Name: <censored>
> INFO: include disk 'virtio0' 'ceph_disks:vm-147-disk-0' 10G
> INFO: include disk 'virtio1' 'ceph_disks:vm-147-disk-1' 20G
> INFO: include disk 'virtio2' 'ceph_disks:vm-147-disk-2' 150G
> INFO: include disk 'virtio3' 'ceph_disks:vm-147-disk-3' 4G
> INFO: creating Proxmox Backup Server archive 
> 'vm/147/2023-01-06T01:55:37Z'
> INFO: starting kvm to execute backup task
> ERROR: VM 147 qmp command 'backup' failed - got timeout
> INFO: aborting backup job
> INFO: stopping kvm after backup task
> ERROR: Backup of VM 147 failed - VM 147 qmp command 'backup' failed - 
> got timeout
> INFO: Failed at 2023-01-06 02:58:20

Status: and config:

> $ qm status 147 --verbose
> cpus: 4
> disk: 0
> diskread: 0
> diskwrite: 0
> maxdisk: 10737418240
> maxmem: 8589934592
> mem: 0
> name: <censored>
> netin: 0
> netout: 0
> qmpstatus: stopped
> status: stopped
> uptime: 0
> vmid: 147

> $ qm config 147
> boot: order=net0;virtio0
> cores: 4
> ide2: none,media=cdrom
> memory: 8192
> name: <censored>
> net0: virtio=F2:F3:75:8D:92:9E,bridge=vmbr0,tag=1
> numa: 0
> ostype: l26
> scsihw: virtio-scsi-pci
> smbios1: uuid=743f558d-823a-4213-baa3-558a663aa273
> sockets: 1
> virtio0: ceph_disks:vm-147-disk-0,size=10G
> virtio1: ceph_disks:vm-147-disk-1,size=20G
> virtio2: ceph_disks:vm-147-disk-2,size=150G
> virtio3: ceph_disks:vm-147-disk-3,size=4G
> vmgenid: 90e25752-16b4-431d-92fe-8d71b364fb63

Proxmox-Version: 7.2-1
Version pve-qemu-kvm: 7.0.0-4
Version of proxmox-backup-server: 2.2.5-1

There are several VMs failing each night, not always the same. There is 
an accumulation of failed backups of stopped VMs.

Does anybody has an idea? What timed out (connection to backup server, 
...)?

Thanks!
Regards,
Sven