To rescan an HP Smart Array controller for new disks on a Linux system, you can use the hpacucli utility.
First, make sure the hpacucli package is installed on your system. You can install it using your package manager, such as yum or apt-get.
Next, use the hpacucli utility to rescan the controller for new disks. You can use the following command:
hpacucli rescan
This will rescan all the controllers on the system for new disks.
Alternatively, you can specify a specific controller to rescan using the ctrl option. For example:
hpacucli ctrl slot=0 rescan
This will rescan the controller in slot 0 for new disks.
It's always a good idea to carefully review the documentation and use the appropriate options to rescan your HP Smart Array controller. This will help ensure that any new disks are detected and can be used by your system.