Backup of VM Fails With err -6

[lucacraft89]

When i go to backup VM with id 219 and only this one the backup fails even on local or empty 480GB disk, i suspect corrupt files because when i try to copy with cp -v disk.qcow2 it gives "IO error" at some point.

backuo log

INFO: starting new backup job: vzdump 219 --notification-mode auto --node pve --mode snapshot --compress zstd --remove 0 --notes-template '{{guestname}}' --storage crucial-backup
INFO: Starting Backup of VM 219 (qemu)
INFO: Backup started at 2024-10-30 11:52:05
INFO: status = running
INFO: VM Name: linux19
INFO: include disk 'scsi0' 'local-crucial:219/vm-219-disk-1.qcow2' 150G
INFO: include disk 'efidisk0' 'local-crucial:219/vm-219-disk-0.qcow2' 528K
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: snapshots found (not included into backup)
INFO: creating vzdump archive '/mnt/pve/crucial-backup/dump/vzdump-qemu-219-2024_10_30-11_52_05.vma.zst'
INFO: issuing guest-agent 'fs-freeze' command
INFO: issuing guest-agent 'fs-thaw' command
INFO: started backup task 'af01197b-ad36-41f7-8400-bda88d7e2677'
INFO: resuming VM again
INFO:   2% (3.1 GiB of 150.0 GiB) in 3s, read: 1.0 GiB/s, write: 194.0 MiB/s
INFO:   3% (4.5 GiB of 150.0 GiB) in 13s, read: 144.1 MiB/s, write: 127.4 MiB/s
INFO:   4% (6.1 GiB of 150.0 GiB) in 21s, read: 200.3 MiB/s, write: 137.5 MiB/s
INFO:   6% (10.3 GiB of 150.0 GiB) in 24s, read: 1.4 GiB/s, write: 46.4 MiB/s
INFO:   7% (10.5 GiB of 150.0 GiB) in 27s, read: 83.1 MiB/s, write: 82.6 MiB/s
INFO:   8% (12.1 GiB of 150.0 GiB) in 39s, read: 137.7 MiB/s, write: 125.3 MiB/s
INFO:   9% (13.7 GiB of 150.0 GiB) in 48s, read: 183.9 MiB/s, write: 170.2 MiB/s
INFO:  10% (15.3 GiB of 150.0 GiB) in 57s, read: 182.0 MiB/s, write: 168.7 MiB/s
INFO:  10% (15.4 GiB of 150.0 GiB) in 58s, read: 118.6 MiB/s, write: 118.5 MiB/s
ERROR: job failed with err -61 - No data available
INFO: aborting backup job
INFO: resuming VM again
ERROR: Backup of VM 219 failed - job failed with err -61 - No data available
INFO: Failed at 2024-10-30 11:53:04
INFO: Backup job finished with errors
INFO: notified via target `mail-to-root`
TASK ERROR: job errors

 

[fabian]

if reading the volume doesn't work, then yes, likely the file is corrupt and/or the underlying storage is defective.

 

[fiona]

See also: https://forum.proxmox.com/threads/error-job-failed-with-err-61.145647/post-657883