add disk in cluster

Dear all ,

I am new to sun cluster and i having a problem adding a disk to a disk group .

My platfrom consists of a clustered E6900 SUN server and an EMC DX1000 storage .

the disk group that iam trying to add the disk to is shared group ,

whwen i run vxdisk list i get in status "online invalid" while it should be online shared .

please note that theese are the steps that i followed in addink the disk :

1) fromat disk

2) label

3) vxdctl enable

4) vxdg -g <group name> adddisk diskname=target

i am getting the following error in step 4 .

VxVM vxdg ERROR V-5-1-10127 associating disk-media hist20 with EMC0_56: Disk private region contents are invalid

[738 byte] By [pmatta] at [2007-11-26 8:47:10]