LVM2 - Logical Volume Management

In the world, LVM (Logical Volume Management) was used on various operating systems since... many years ago.
In Linux, there was an initial implementation of LVM (now known as LVM1), dating back to 1997.
When work on kernel 2.5 begun, there were two competing implementations - EVMS (made by IBM) and LVM2.
Eventually, LVM2 won the entrance to the 2.6 kernel, and EVMS remained as an out-of-tree project.
EVMS, however, is much more then LVM. IBM's developers decided to get rid of all the kernel parts, and turn EVMS into a front-end to LVM2, being entirely user-space. Thus, EVMS made its way into distributions and to user's hands.

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