Werk #16554: df: Wrong handling of lower levels for free space

Component

Checks & agents

Title

df: Wrong handling of lower levels for free space

Date

Apr 19, 2024

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.4.0b1 Not yet released	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.3.0	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.2.0p26	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

This is a regression since Checkmk 2.2.0.

When configuring the Service Monitoring Rule "Filesystems (used space and growth)", configured levels for free space were evaluated incorrectly.

As a result, affected services erroneously showed up as CRIT.

This happened because of a wrong rounding while evaluating the levels, and only affected small filesystems with a size below 1MB.