Choose which disk to report on / ignore certain disks for stats and warnings

[captainmish]

Hello
We have a usb disk which is mounted at night for some backups. We are now getting mailbombed about it being near capacity (and are already aware of/happy with it). Any ideas how we can completely remove this disk from stat generation and warnings?
Thanks,

[jaapaikema]

Looking forward for the answer / solution.
I would almost call this a bug.

I have the same problem with loop-devices