Werk #19720: Fix DRBD stats parsing for 9.x bracket notation

Component

Checks & agents

Title

Fix DRBD stats parsing for 9.x bracket notation

Date

Apr 9, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.6.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0b5 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p26	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

DRBD 9.x reports the pe and ap counters using a bracket notation that splits them into sub-categories:

pe:[application;resync] — pending requests sent to the partner
ap:[writes;reads] — block I/O requests forwarded to DRBD

For example, pe:[3;1] means 3 application and 1 resync pending request. Previously, the plugin didn't understand this format and silently reported these counters as 0. The plugin now sums the sub-values, matching the DRBD 8.x single-value semantics.

To the list of all Werks