Werk #22684: lvm_vgs: ignore foreign lines in agent output

Component	Checks & agents
Title	lvm_vgs: ignore foreign lines in agent output
Date	Oct 15, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	3.0.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.5.0p16 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0p38 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

If another program wrote a line to the output of the Checkmk agent while the lvm_vgs section was produced (for example a log message of a CI runner), the LVM VG services crashed with ValueError: not enough values to unpack (expected 7, got 1).

Lines that do not have the format of a volume group are now ignored, and the volume groups are monitored as before.

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