LVM 이해

LVM (Logical Volume Management) partitions provide a number of advantages over standard partitions. LVM partitions are formatted as physical volumes. One or more physical volumes are combined to form a volume group. Each volume group’s total storage is then divided into one or more logical volumes. The logical volumes function much like standard partitions. They have a file system type, such as ext4, and a mount point.

부트 로더는 LVM 볼륨을 읽을 수 없습니다. 당신의 /boot 파티션에 비-LVM 디스크 파티션을 표준으로 만들어야만 합니다.

기본적으로, 설치 처리는 항상 LVM 볼륨에서 /`와 `swap 파티션, 표준 파티션에서 분리된 `/ boot`를 생성합니다. 자세한 내용은 xref : install/Installing_Using_Anaconda.adoc #sect-installation-gui-manual-partitioning-recommended [권장 파티션 구성표]를 참조하세요.

To understand LVM better, imagine the physical volume as a pile of blocks. A block is a storage unit used to store data. Several piles of blocks can be combined to make a much larger pile, just as physical volumes are combined to make a volume group. The resulting pile can be subdivided into several smaller piles of arbitrary size, just as a volume group is allocated to several logical volumes.

An administrator may grow or shrink logical volumes without destroying data, unlike standard disk partitions. If the physical volumes in a volume group are on separate drives or RAID arrays then administrators may also spread a logical volume across the storage devices.

You may lose data if you shrink a logical volume to a smaller capacity than the data on the volume requires. To ensure maximum flexibility, create logical volumes to meet your current needs, and leave excess storage capacity unallocated. You may safely grow logical volumes to use unallocated space, as your needs dictate.