10.输入“xfsdump -I”可查看。
[[File:LVExtend10.png]]
[root@localhost ~]# umount 11.输入“umount /home”卸载/home。umount 备注：如出现“umount: /home: device is busy.”(In some cases useful info about processes that usethe device is found by lsof(8) or fuser(1)) 如提示无法卸载， 则 是 表明 有进程占用/home， 可 使用如下命令终止占用进程 ：：fuser -m -k /home[[File:LVExtend11.png]] 12.输入“lvreduce -L -1G /dev/cl_centos7/home”并输入“y”确认减少/home的1G空间。[[File:LVExtend12.png]] 13.再次输入“vgdisplay”则显示Free PE为1.46G。[[File:LVExtend13.png]] 14.输入“lvextend -L +1G /dev/cl_centos7/root”增加1G空间到/root。[[File:LVExtend14.png]] 15.输入“xfs_growfs /dev/cl_centos7/root@localhost ~”进行扩容。[[File:LVExtend15.png]]# fuser 16.如直接输入“xfs_growfs /dev/mapper/cl_centos7-home”则提示无法挂载。 错误信息：xfs_growfs: /dev/mapper/cl_centos7-m home is not a mounted XFS filesystem.[[File:LVExtend16.png]] 17.输入“mkfs.xfs /dev/mapper/cl_centos7-home -k f”将/dev/mapper/cl_centos7-home格式化为XFS文件系统。[[File:LVExtend17.png]] 18.输入“mount /dev/mapper/cl_centos7-home /home”将/dev/mapper/cl_centos7-k home挂载到/home。[[File:LVExtend18.png]] 表 19.输入“df -Th”则显 示 自动把霸占home分区的进程kill掉！/已增加到110G，/home则减少到179G。[[File:LVExtend19.png]] 20.输入“xfsrestore -f /home.xfsdumpbackup /home”恢复文件即可。[[File:LVExtend20.png]]
