Logical Volume Manager (LVM) is a subsystem for managing file
systems and disk storage space that are structured into logical
volumes rather than being restricted to the beginning and end points
of a physical disk. Logical volumes can be smaller than the disk
or disk array on which they reside, or they can include all or part
of several disks or disk arrays. Logical volume boundaries are not
required to coincide with the boundaries of physical disks when
multiple disks or arrays are used.
Managing logical volumes is done by the Logical Volume Manager,
not the kernel. However, the kernel contains data structures for
each volume group on the system, and the space reserved for LVM
data structures must be sufficient to support the number of volume
groups that exist on the system. This is done with the maxvgs kernel configuration
parameter.
Additional
Information |
 |
Printable version
