centos7 lvm添加硬盘后扩展磁盘空间

df -h

pvdisplay

vgdisplay

fdisk -l  #查看并找出新加磁盘

wipefs -a /dev/sdb #如已有分区表需先擦除，否则可跳过

#在新磁盘创建物理卷：

pvcreate /dev/sdb

#将新磁盘添加到目标物理卷组

vgextend rootvg /dev/sdb

#扩容lvm

lvextend -L +2000G /dev/mapper/rootvg-rootlv

#使扩容生效

for xfs:

xfs_growfs  /dev/mapper/rootvg-rootlv

Or for ext4:

resize2fs /dev/mapper/rootvg-rootlv

refer link: https://www.huaweicloud.com/articles/bb03bda7156ff72077e827364e3719c5.html

https://blog.csdn.net/yanchaohui1030/article/details/99838525