Swap usage with backups on nfs share

[gharms]

Hello,
I have different Proxmox server with different Proxmox versions. Most of them: Debian installed with swap partition and Proxmox on top. No ZFS file system! Using ext4! Virtual machines have qcow2 files.
Backups are done via nfs file share. There is enough memory available. Some machines only using 50% of available memory. Doing a backup to nfs share: After that swap is used very much. Backups are running fine with all virtual machines. But on next morning my monitoring mentions the high swap usage.
I tried to disable backups. In that case swap usage is normal (not used). Doing a manual backup to nfs share: swap usage increases.
Someone with the same issue? I searched the forum but did not found a solution. The people are writing about issues only regarding ZFS file system.

Gunnar

 

[mira]

If it does not impact performance, it shouldn't be a problem.
If you don't want to use swap and you do have enough RAM available, you can always disable it.
Run swapoff -a for disabling swap until the next reboot. If you want it to be persistent, check /etc/fstab and remove or comment the swap line by adding a '#' in front of it.