Werk #17222: HW/SW inventory: Retain inventory history on central site

Component	Site management
Title	HW/SW inventory: Retain inventory history on central site
Date	Jan 13, 2025
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.5.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.4.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.3.0p25 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0p39 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

This change affects customers, which are monitoring hosts on a remote site. Previously, the Inventory history of host would sporadically disappear on the central site, even though it was shown correctly on the remote site. This was due to an incorrect implementation of the diskspace utility. This implementation assumed that the historic data was only needed on the remote site. With this change, diskspace will only consider deleting the inventory history of hosts, which have been deleted.

The faulty behaviour was introduced in #Werk 13422. A similar, but different issue, is addressed in #Werk 17223.

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