I'm going to assume this is from the perspective of KVM. If its for Xen, some of the below may or may not apply. Generally, LUN's are per VM, so any export limits on your storage and LUN count ...

As Linux systems administrators watch over their hardware and software infrastructures, they constantly have to look ahead to how much space to allocate to hard-disk partitions to meet changing needs.

All Linux sysadmin books tell about the awesomeness of LVM. But is actually anyone using it? On a desktop it adds needless complexity - you only need boot, (efi), swap, root and perhaps home. You ...