Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 27 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
-- 创建测试目录并挂载
[root@ora10g zlm]# mkdir /oradata/ora10g -p
[root@ora10g zlm]# mount -o loop /zlm/test1 /oradata/ora10g
[root@ora10g zlm]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
ext3 7.7G 5.6G 1.7G 77% /
/dev/sda1 ext3 99M 12M 82M 13% /boot
tmpfs tmpfs 506M 0 506M 0% /dev/shm
/zlm/test1 ext3 96M 5.6M 86M 7% /oradata/ora10g
--在挂载完的目录/oradata/ora10g中创建测试文件并添加内容
[root@ora10g ora10g]# touch redo01.log redo02.log redo03.log
[root@ora10g ora10g]# ll
total 12
drwx------ 2 root root 12288 Aug 27 13:59 lost+found
-rw-r--r-- 1 root root 0 Aug 27 14:11 redo01.log
-rw-r--r-- 1 root root 0 Aug 27 14:11 redo02.log
-rw-r--r-- 1 root root 0 Aug 27 14:11 redo03.log
[root@ora10g ora10g]# cat >> redo01.log << EOF
> AB
> EOF
[root@ora10g ora10g]# cat >> redo02.log << EOF
> CD
> EOF
[root@ora10g ora10g]# cat >> redo03.log << EOF
> EF
> EOF
[root@ora10g ora10g]# ll
total 15
drwx------ 2 root root 12288 Aug 27 13:59 lost+found
-rw-r--r-- 1 root root 3 Aug 27 14:12 redo01.log
-rw-r--r-- 1 root root 3 Aug 27 14:12 redo02.log
-rw-r--r-- 1 root root 3 Aug 27 14:12 redo03.log
--模拟误操作，删除/oradata/ora10g下所有文件
[root@ora10g ora10g]# rm -rf *.*
[root@ora10g ora10g]# ll
total 12
drwx------ 2 root root 12288 Aug 27 13:59 lost+found
[root@ora10g ora10g]# umount /zlm/test1
umount: /oradata/ora10g: device is busy
umount: /oradata/ora10g: device is busy
由于当前目录是/oradata/ora10g，所以提示"device is busy"，退出该目录后再执行