Proxmox 3.4 Backup failed Input/output error

JayTaylorMN

Member
Jul 9, 2016
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I've got a Proxmox 3.4 server that is connected to a QNAP NAS for backups (NFS). I can start a backup job and it then gets to about 18% and fails. I can't seem to find anything with information on the ERROR: lines.

Here are the last few lines of the output:

INFO: status: 14% (47859499008/341449900032), sparse 0% (2897014784), duration 1184, 45/45 MB/s
INFO: status: 15% (51240042496/341449900032), sparse 0% (2898714624), duration 1245, 55/55 MB/s
INFO: status: 16% (54632448000/341449900032), sparse 0% (2918850560), duration 1316, 47/47 MB/s
INFO: status: 17% (58053885952/341449900032), sparse 0% (2918850560), duration 1375, 57/57 MB/s
INFO: status: 18% (61462675456/341449900032), sparse 0% (2918850560), duration 1436, 55/55 MB/s
INFO: status: 18% (63853428736/341449900032), sparse 0% (2918850560), duration 1511, 31/31 MB/s
ERROR: job failed with err -5 - Input/output error
INFO: aborting backup job
ERROR: Backup of VM 100 failed - job failed with err -5 - Input/output error
INFO: Backup job finished with errors
TASK ERROR: job errors

It's a new NAS and I believe it's working OK. I've got a Windows VM talking to is just fine. Odd thing is that it is consistent, I can start another backup job and it will be just fine until it fails at the same point.

I'm creating another Windows VM and I'll try a backup with that VM and see what happens. I'll post my findings here.

Any ideas?

Thanks,
Jay

p.s. This proxmox 3.4 server is just a temporary server, I've got different hardware with proxmox 4.4 installed and that is where the VM's will ultimately be. If this is a 3.4 issue that won't happen with 4.4 then I hope I'm not wasting any of your time. My goal is to backup the VM from the 3.4 server and restore it to the 4.4 server.