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LVM2 : ウィキペディア英語版
Logical Volume Manager (Linux)

In Linux, Logical Volume Manager (LVM) is a device mapper target that provides logical volume management for the Linux kernel. Most modern Linux distributions are LVM-aware to the point of being able to have their root file systems on a logical volume.〔(【引用サイトリンク】title=7.1.2 LVM Configuration with YaST )〕〔(【引用サイトリンク】title=HowTo: Set up Ubuntu Desktop with LVM Partitions )〕〔(【引用サイトリンク】title=9.15.4 Create LVM Logical Volume )
Heinz Mauelshagen wrote the original LVM code in 1998, taking its primary design guidelines from the HP-UX's volume manager.〔
== Common uses ==
LVM is commonly used for the following purposes:
* Managing large hard disk farms by allowing disks to be added and replaced without downtime or service disruption, in combination with hot swapping.
* On small systems (like a desktop at home), instead of having to estimate at installation time how big a partition might need to be in the future, LVM allows file systems to be easily resized later as needed.
* Performing consistent backups by taking snapshots of the logical volumes.
* Creating single logical volumes of multiple physical volumes or entire hard disks (somewhat similar to RAID 0, but more similar to JBOD), allowing for dynamic volume resizing.
LVM can be considered as a thin software layer on top of the hard disks and partitions, which creates an abstraction of continuity and ease-of-use for managing hard drive replacement, re-partitioning, and backup.
The Ganeti solution stack relies on the Linux Logical Volume Manager.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Logical Volume Manager (Linux)」の詳細全文を読む



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