Oracle Solaris Cluster 4.2 software does not support Solaris Volume Manager multi-owner disk sets. This restriction of support is due to multiple Oracle Solaris bugs that might adversely affect cluster availability.
Until support of Solaris Volume Manager multi-owner disk sets in Oracle Solaris Cluster 4.2 configurations can be qualified, documentation for use of multi-owner disk sets should be ignored.
Contact your Oracle support representative to learn whether Solaris Volume Manager multi-owner disk sets becomes supported for Oracle Solaris Cluster 4.2 configurations.