FS System: Explanation of CM_EVT_QOS_REBALANCE_FAILED events (Doc ID 1988602.1)

Last updated on DECEMBER 01, 2016

Applies to:

Oracle FS1-2 Flash Storage System - Version 6.1.0 and later
Information in this document applies to any platform.

Symptoms

QoS Rebalance Failed events (CM_EVT_QOS_REBALANCE_FAILED) may be observed when adding Drive Enclosures or freeing up space if the system is reclaiming, or zeroing, storage.  If the "Enable Automatic QoS Rebalancing" is enabled, the system performs a daily scan and rebalances volumes as required.  If there is Unavailable Storage, the event may be generated if the free storage is less than that required to perform the rebalance.

 

NOTE: The feature "Automatic QoS Rebalancing" must be disabled on all the Storage Domains if the current software version is on 06.01.xx
See Document 2044829.1 FS System: Automatic QoS (Quality of Service) Rebalancing Recommended Setting for FS1-2 for more details.

 

If the system is zeroing storage, whether as new DEs are added or LUNs are deleted, and it initiates a rebalance, the current situation is that it does not check for sufficient free (not reclaiming) space before it starts the migration.  This will cause that specific migration to fail and generate the title events.

Changes

 This issue is affecting FS1 code release 06.01.xx

Cause

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