Werk #1388: oracle_asm_diskgroup: fixed wrong calculation of free space in NORMAL/HIGH redundancy Disk Groups

Component	Checks & agents
Title	oracle_asm_diskgroup: fixed wrong calculation of free space in NORMAL/HIGH redundancy Disk Groups
Date	Dec 29, 2014
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.2.7i1 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.7i1 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.7i1 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.7i1 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.7i1 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.7i1 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.7i1 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.7i1 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.7i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

The total and free space is calculated on the redundancy of the Disk Group. The calculation is complicated when a Disk Group has more then the required number of Failure Groups. The check expects 2 for NORMAL and 3 for HIGH redundancy without and 3 or 5 with voting files. The size of every Failure Group of a Disk Group must be the same, which is a recommendation from Oracle. Otherwise the calculation is wrong.

The expected number of Failure Groups for a Disk Groups is the default for nearly every Oracle installation.

This fix changes nothing when EXTERNAL redundancy is used.

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