Recently I had an Oracle database server used by some developers that was running out of space on its data volume mounted at /u02. The volume was a simple MBR volume (think fdisk), so it couldn’t be non-destructively extended without using a third-party utility like gparted. That would have been fine, but rather than leave the volume as MBR, I decided to create a new iSCSI SAN-backed Logical Volume Manager (LVM) volume, which can be extended and resized pretty easily.
In this post, I’ll show you how to create a logical volume stored on an iSCSI SAN. Even though I did this on Red Hat Enterprise Linux 6.5 (RHEL), these steps should work on any distribution of Linux.