35.4 Summary
Volume groups and logical volumes provide an abstract layer on top of the physical storage devices on an Ubuntu system to provide a flexible way to allocate the space provided by multiple disk drives. This allows disk space allocations to be made and changed dynamically without the need to repartition disk drives and move data between filesystems. This chapter has outlined the basic concepts of volume groups, logical volumes and physical volumes while demonstrating how to manage these using command-line tools.
