掛盤到有文件的目錄底下

磁盘格式化，挂盘
[root@k10148008056 ~]# fdisk -l
[root@k10148008071 ~]# df -Th
Filesystem          Type      Size  Used Avail Use% Mounted on
/dev/vdb1           xfs       500G   33M  500G   1% /oradata

[root@k10148008056 ~]# mkfs.xfs /dev/vdb

[root@k10138002151 u01]# cd /mnt
[root@k10138002151 mnt]# mkdir u01
[root@k10138002151 mnt]# cd u01/
[root@k10138002151 u01]# pwd
/mnt/u01

[root@k10138002151 u01]# mount /dev/vdb /mnt/u01
[root@k10138002151 u01]# df -h
/dev/mapper/ol-u01    27G  9.1G   18G  34% /u01
/dev/vdb             4.0T   33M  4.0T   1% /mnt/u01
[root@k10138002151 u01]# cp -a /u01/* /mnt/u01/
[root@k10138002151 u01]# rm -rf /u01/*
[root@k10138002151 u01]# umount /dev/vdb
[root@k10138002151 u01]# df -h
/dev/mapper/ol-u01    27G  347M   27G   2% /u01
tmpfs                797M     0  797M   0% /run/user/1001
[root@k10138002151 u01]# vi /etc/fstab
#/dev/mapper/ol-u01      /u01                    xfs     defaults        0 0
/dev/vdb                /u01                    xfs     defaults        0 0
[root@k10138002151 /]# df -h
/dev/mapper/ol-u01    27G  347M   27G   2% /u01
tmpfs                797M     0  797M   0% /run/user/1001
[root@k10138002151 /]# mount -a
[root@k10138002151 /]# df -h
/dev/vdb             4.0T  9.1G  3.9T   1% /u01
tmpfs                797M     0  797M   0% /run/user/1001
[root@k10138002151 /]# cd /u01
[root@k10138002151 u01]# ll
total 4
drwxr-xr-x. 4 oracle oinstall   52 May 30 06:58 app
drwxr-xr-x. 3 oracle oinstall 4096 May 30 06:41 source
[root@k10138002151 u01]# pwd
/u01