pvcreate /dev/sdb1
查看 pvs pvdisplay /dev/sdb1
vgcreate vgname /dev/sdb1
-s 指定pe大小 默认是4M
vgdisplay vgname
vgextend vgname /dev/sdb3 扩大vg
resize2fs
vgreduce
vgremove
lvcreate -n lvmname -L 200M vgname
lvs
lvdisplay /dev/vgname/lvname
mke2fs -j /dev/vgname/lvname
mount /dev/vgname/lvname 挂载点
卸载
umount 挂载点
lvreduce /dev/vgname/lvname