CentOS System Administration Essentials

Enterprise filesystem shootout

The LVM has been for many years the way to manage disk growth, and allowing logical volumes to span over multiple disks and support backing up through the use of snapshots. LVMs, although very good, still require a filesystem to sit on top of the logical volume and hence, incur an extra level of management; bearing in mind that the LVM system itself has three levels of management:

• Physical volumes: These are the disk space made available to the LVM system
• Volume groups: These organize the physical volumes to be made available to the consumer
• Logical volumes: These consume the disk space made available via the volume groups and are presented to the filesystem tools to be formatted

Now just because we have used such software ...