Werk #1550: zfs_arc_cache: do not inventorize of no cache information available

Component Checks & agents
Title zfs_arc_cache: do not inventorize of no cache information available
Date Nov 26, 2014
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 1.2.6b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

This avoid an exception.

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