CLuster File System (CFS) on LDOM Setup

Hi Experts

I need a quick help on below requirement. 

I am planning two LDOM's (VM SPARC Server) on two different physical Solaris Systems. Both LDOM's are running two instance of application for scale up architectur (means x instance of Application will run on one LDOM and remianing y instance will on second LDOM). But application require's one of file system to be shared across both LDOM's for application requirement. I tried shared disk group on physical controller system and shared volume to both LDOM's but while mounting inside LDOM's, it do not allow me to mount both at same time. Can anyone help to finalize this plan.

Kind Rgds

Rajendra