On centos7 the lvm (pv, vg, lv)

A, LVM logical volume
effect 1.lvm of
dynamically adjusting the size of the disk space
2.lvm features
to break the traditional partition must continuously increase the disk usage of
dynamically adjusting the size of the partition
may be highly scalable
using system-config-lvm management tool
boot partition lvm logical volume can not use
two, consisting of the logical volume
1.pv physical volume
ordinary partition to a physical volume is divided into several small blocks
each block 4m, user-friendly expansion and contraction
2.vg volume group
vg will be located in multiple hard drive partition unified management
to create volume groups after you must first create a physical volume
created must create a physical volume after volume group
vg flexibility strong
3.lv logical
logical volume for storing data using a
logical volume group must be the basis of the above Creating
Third, the basic configuration management lvm of
today we need to open graphical system centos7, the off state to add a new hard disk 100G of the two, and then boot into a command character interface






1. management pv physical volume



2. vg volume group management





3. management lv logical volume



4. mount the logical volume formatted logical lvm