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XFS是centos7 操作系统默认软件系统,XFS只能扩大不能缩小
[root@localhost ~]# umount /home/
umount: /home: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
如提示无法卸载,则是有进程占用/home,使用如下命令终止占用进程:
[root@localhost ~]# fuser -m -k /home
-k 表示自动把霸占home分区的进程kill掉!