VG， LV

CentOS 7.x 物理卷和逻辑卷，超级强大的功能

[root@Centos7 dev]# pvcreate /dev/sdb /dev/sdc
Physical volume "/dev/sdb" successfully created.
Physical volume "/dev/sdc" successfully created.

//指定那几块硬盘加入物理卷
[root@Centos7 dev]# vgcreate 300G /dev/sdb /dev/sdc
Volume group "300G" successfully created

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