LVM 云磁盘在线扩容

1、扩展pv大小

   pvresize  /dev/vdb

2、扩展LV

   lvextend  -l +100%FREE /dev/vg9999/lv9999

3、加载磁盘

   mount /dev/vg9999/lv9999 /app/

4、重新调整xf1对应的目录

   xfs_growfs /dev/vg9999/lv9999