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vdisk_protection_enabled in IBM i PowerHA environments
This is the corresponding RFE to RFE number 141546 but for IBM i side. Spectrum Virtualize (be it flashsystems or SVC) introduced feature to restrict LUNS from being unmapped or deleted from storage when there was I/O in last XX minutes. This feature (if enabled) breaks PowerHA IASP switchovers as a HOST<->LUN unmap is done, which cannot be done because there were IOs.
Spectrum Virtualize came up with solution to disable volume protection based on pools/child pools. So one could put IASP LUNs in child-pool, turn off volume protection for this pool to allow PowerHA operations but also activate volume protection for all other LUNs in other pools.
Current PowerHA versions run a check on either cluster start or CRG start to check if volume protection is activated or not. But this check only verifies system, not individual pool settings. Following message can be found in joblog: IBM Spectrum Virtualize Volume Protection is enabled. PowerHA is unable to use LUN-Level Switching.
So please extend PowerHA verification to check setting of system & pool for vdisk protection.
PowerHA would work in a mixed vdisk protection en-/disabled environment.
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