I am trying to deploy a self-host oVirt Engine on a SAN HP MSA P2000 G3 LUN. I created a Vdisk and a volume via the Storage Management Utility (SAN GUI). The volume is already containing data because of previous tests and oVirt documentation specifies that
LUNs cannot be reused, as is, to create a storage domain or virtual disk. If you try to reuse the LUNs, the Administration Portal displays the following error message: Physical device initialization failed. Please check that the device is empty and accessible by the host.
The solution they give is to use
dd if=/dev/zero of=/dev/mapper/LUN_ID
Is there a better way to clean LUN via the MSA P2000 GUI or another command line faster than dd (I need to clean 0.5 TB)?