Hello,
we have the same issue with a 3Ware 9650-SE 12-port Controller. We had 6x1TB in a RAID 6, added 3x1TB, waited for the controller to finish the resize and then did the pv resize. Now i see 6519GB in the volume manager, but cannot assign the space to the existing logical drives nor can i create new drives - the slider is just fixed. Same after 2 reboots.
Is there any solution to this?