创建lvm卷
在硬盘上新划分sda3分区,格式为8e pvcreate /dev/sda3 查看当前vg 将sda3添加到vg组centos vgextend centos /dev/sda3
创建名称为centos-home的逻辑卷 lvcreate -l +100%FREE centos -n home mkfs.xfs /dev/centos/home 挂载 mount /dev/centos/home /mntdir
删除操作 lvremove centos-home /dev/centos/centos-home