Solaris Jumpstart stale metadb

I had a problem with creating volumes at install time. Basically I had 4 disks , but I only wanted to mirror 2 of these. Since the system was not brand new , it had volumes configured prior , and state databases on 3 drives. When configuring the new volumes , it failed to mount them because of the state database present on the third drive. I worked around this by modifying the jumpstart profile to create a state database on the third disk too.