Intel MPCMM0001 manual UpdateMetadata File, Firmware Update Synchronization/Failover Support

Updating CMM Software

23.7Update_Metadata File

The Update_Metadata file included in the update package is used by the update process to determine the platform, firmware package version, files, sequence, update method, location, and any other data required to update the individual components in the update package.

23.8Firmware Update Synchronization/Failover Support

The following CMM versions and corresponding update directions will include support for heterogeneous synchronization.The CMM will continue to support behavior from firmware prior to version 5.2 for scenarios where a pre-configured newer CMM is introduced in a chassis with an older CMM.

Table 98. CMM Update Directions

CMM Versions		Update Direction Supported
4.x – 5.1		Upgrade/Downgrade with behavior prior to 5.2
		Upgrade only
4.x – 5.2		Note: the corresponding downgrade scenario (5.2->4.x), though
		possible from a CMM update point of view does not guarantee
		stable data synchronization behavior
5.1	– 5.2	Upgrade/Downgrade
5.2	– 6.1 (+/-)	Upgrade/Downgrade

The CMM will seamlessly synchronize all data items irrespective of version differences. User scripts (/home/scripts/*) is configurable to control its synchronization between differing CMM versions. Between same versions, this data will be synchronized.

Failover to a newer CMM firmware version (after an update and any other redundancy establishment) is configurable - automatic/manual.

The CMM also allows a build independent failover, allowing failover even to older firmware versions.

23.9Automatic/Manual Failover Configuration

The CMM firmware now provides the user control over CMM failover when redundancy is established following a firmware update. The user can now decide if the CMM should or should not automatically failover to a newer CMM firmware version.

A new failover configuration flag - -"FailoverOnRedundancy" in the CMM configuration file (/etc/ cmm.cfg) decides if an automatic or manual failover is desired. The configuration flag can be modified using the cmmget/cmmset commands. This flag can be read/set through any of the CMM interfaces (i.e., CLI, SNMP and RPC).

The setting of this flag will be in effect only starting the next time redundancy is established.

Note: The regular CMM health monitoring failover will continue to be in effect irrespective of the value of this flag. Other conditions such as CMM health, switch health (CompactPCI only), network connectivity that determine an automatic failover will continue to be in effect. This means that

MPCMM0001 Chassis Management Module Software Technical Product Specification 209