新增硬盘
fdisk
fdisk -l fdisk /dev/vdb p n t 8e w fdisk -l pvcreate /dev/vdb1 vgextend centos /dev/vdb1 lvextend -l +100%FREE /dev/mapper/centos-root more /etc/fstab xfs_growfs /dev/mapper/centos-root df -TH
来源：https://www.cnblogs.com/kylingx/p/11884805.html