LVM

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 AN!Wiki :: LVM

LVM is an acronym for Logical Volume Management.

It is a tool that takes one or more real or virtual disks and assigns them as Physical Volumes (PVs). From one or more PVs you can create a Volume Group (VG). The VG acts as a pool of raw space from which one or more Logical Volumes (LVs) can be created. These LVs are essentially a tradition partition on top of which you can format with a filesystem, assign to a RAID device and so on.

PV

Physical Volume; This is a raw partition from a disk assigned to be used in an LVM.

VG

Volume Group; This is a pool of one or more PVs. From this pool of raw space, LVs are created.

LV

Logical Volume; This is similar to a traditional raw partition. You can format an LV with a filesystem, add it to a RAID or DRBD array and so on.

 

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