lvreduce -L 10240M /dev/rhel/home pvchange -xn /dev/sdb1 pvmove -i 1 /dev/sdb1 vgreduce rhel /dev/sdb1
umount /opt/huawei/Bigdata/ lvreduce -L -100G /dev/rhel/opt_huawei_Bigdata mkfs.xfs /dev/rhel/opt_huawei_Bigdata -f mount /dev/rhel/opt_huawei_Bigdata
lvextend -L +100G /dev/rhel/var_log
xfs_growfs /dev/rhel/var_log
mkfs.xfs /dev/sdc -f pvcreate /dev/sdc vgextend centos /dev/sdc lvextend -L +500G /dev/mapper/centos-root xfs_growfs /dev/mapper/centos-root