Werk #11728: zfsget: handle datasets with no available space correctly

Component Checks & Agents
Title zfsget: handle datasets with no available space correctly
Date Nov 26, 2020
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 2.0.0b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

The check plugin zfsget did not handle datasets with zero available space correctly. This resulted in incorrect output for example concerning the overall size of the dataset. This has been fixed.

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