VM backup failing after 5%

[Alpinehost.ch]

I am having a problem trying to backup a VM. Backing up the VM was running fine up until today when I encountered this error. Help please. The server came already pre-installed with Promox and it is unmanaged. I am new to Proxmox so any help will be highly appreciated. Ta

INFO: 0% (5.0 GiB of 800.0 GiB) in 5s, read: 1020.1 MiB/s, write: 53.9 MiB/s
INFO: 1% (9.3 GiB of 800.0 GiB) in 8s, read: 1.4 GiB/s, write: 36.4 MiB/s
INFO: 2% (16.7 GiB of 800.0 GiB) in 22s, read: 540.6 MiB/s, write: 89.6 MiB/s
INFO: 3% (24.1 GiB of 800.0 GiB) in 1m 37s, read: 101.7 MiB/s, write: 92.6 MiB/s
INFO: 4% (32.4 GiB of 800.0 GiB) in 1m 44s, read: 1.2 GiB/s, write: 41.6 MiB/s
INFO: 5% (40.0 GiB of 800.0 GiB) in 1m 57s, read: 601.8 MiB/s, write: 78.5 MiB/s
INFO: 5% (41.5 GiB of 800.0 GiB) in 2m 14s, read: 91.6 MiB/s, write: 90.5 MiB/s
ERROR: job failed with err -5 - Input/output error
INFO: aborting backup job
INFO: stopping kvm after backup task
ERROR: Backup of VM 100 failed - job failed with err -5 - Input/output error
INFO: Failed at 2023-07-14 12:30:29
INFO: Backup job finished with errors
TASK ERROR: job errors

 

[Moayad]

Hi,

ERROR: Backup of VM 100 failed - job failed with err -5 - Input/output error

The error 5 usually means that there is an error in hardware issue, I would check the hard disk health using smartctl.

 

[Alpinehost.ch]

Thanks, managed to sort out the problem. My server has a 1TB HDD, my VM HDD is 800G. So backing up 800G on a 1TB doesn't make sense, therefore the I/O error.