sudo mkdir /data
sudo yum install -y lvm2 yum-utils
#（n,p,w）
sudo fdisk /dev/sdb
sudo pvcreate /dev/sdb1
sudo vgcreate vgdata /dev/sdb1
sudo lvcreate -l 100%FREE -n lvdata1 vgdata
sudo mkfs.xfs /dev/mapper/vgdata-lvdata1 
sudo mount /dev/mapper/vgdata-lvdata1 /data
sudo echo `sudo blkid /dev/mapper/vgdata-lvdata1 | awk '{print $2}' | sed 's/\\"//g'` /data xfs defaults 0 0 >> /etc/fstab

扩容方法

pvcreate /dev/sde
vgextend vgdata /dev/sde
vgs
lvextend -L +5G /dev/mapper/vgdata-lvdata1
xfs_growfs /dev/mapper/vgdata-lvdata1