a software tool that allows storage drive space to be added or expanded on the fly without system reboots or shutdowns, giving systems administrators more flexibility for operations
The subsystem used for managing disk storage. Logical volume management provides a higher-level abstraction of physical storage. A logical volume could arrange physical storage by the concatination, mirroring, or striping of physical storage for high availability and/or performance.
Manages disk space at a logical level. It controls fixed-disk resources by mapping data between logical and physical storage, allowing data to be discontiguous, span multiple disks, replicated, and dynamically expanded.
LVM is an implementation of a logical volume manager for the Linux kernel. It was originally written in 1998 by Heinz Mauelshagen, who based its design on that of the LVM in HP-UX.