Detaching-Attaching Veritas Volume Manager mirror disk on a solaris machine

Hi Everyone,

Does anyone experience doing this scenario before..

I have a solaris machine (Solaris 9) running an in-house application and used Veritas Volume Manager 4.0.

Now,  we have to apply a critical security patch on the solaris machine. Doing this activity, they require to detach veritas volume manager mirror disk from the OS. This is to protect the volume from any conflict or overwrite activity to the volume use by Veritas Volume Manager during the OS patch. And Re-attach the mirror disk/volume after the activity(security patch).

The challenge now is, the root volume is mirror using veritas volume manager, and veritas volume manager must be detach before the OS patch installation that makes it complicated scenario. I have read several forums regarding or almost the same scenario and returns them a system failure....There are some, they were successful in detaching the disk but when they try to re-attach the disk, it fails.

Any reply for this is highly appreciated..

Thanks..