Are multiple backups at the same time possible?

[broadcom]

Hi!

Tried searching, but found it difficult to uncover.

We are trying to have multiple backup jobs:

1. Backup job #1:
   1. Time: 22:00
   2. Occurence: Daily
   3. Scope: Most of our VM`s with some exceptions
2. Backup job #2:
   1. Time: 03:00
   2. Occurence: Daily
   3. Scope: Pool ABC
3. Backup job #3:
   1. Time: 05:00
   2. Occurence: Daily
   3. Scope: Pool EFG
4. Backup job #4:
   1. Time: 06-22
   2. Occurence: Hourly
   3. Scope: Pool XYZ

When we did this, we ran into an error on Backup Job #4 because vzdump was busy with Backup Job #1.

can't acquire lock '/var/run/vzdump.lock' - got timeout Details
VMID
Name
Status
Time
Size
Filename
Total running time: <0.1s
Total size: 0 B
Logs vzdump --storage XYZ --notes-template '{{guestname}}' --performance 'max-workers=8' --fleecing 0 --mode snapshot --quiet 1 --pool XYZ

Question is:

Can you run multiple backups at the same time or is that impossible with Proxmox Backup Server?

 

[PwrBank]

I don't think it's a limitation of PBS per say, but afaik, Proxmox VE itself is limited to the single vzdump backup. I guess you could verify that by running a backup to PBS and then on a different VM, run a backup to the local storage. If it has the same error, then it's PVE issue.

 

[broadcom]

I dont thinks the limitation is with the PBS either. Think that the limitation is regarding vzdump.
Tried two backup jobs and while the first is running, the next is waiting. Guess there is a timeout value regarding waiting