The configuration is fairly involved and there is a lot to be validated... so I thought you
could take a look at this document and see if you can spot what you may have missed:
Solaris Cluster Root Filesystem Configurations For a Guest LDom Controlled by a SUNW.ldom Resource (Doc ID 1366967.1)
Please let us know if this helped
I just installed the last SRU (Oracle Solaris 220.127.116.11.0) and now work's perfectely........