如何在SCO UNIX下的反删除(undelete)

1 2 下一页

SCO OpenServer支持Versioning Filesystems(undelete)，但是缺省却没有打开此项功能，下面是具体细节:

1) scoadmin中选择Hardware/Kernel Manager，选择Filesystem configuration，

设置MAXVDEPTH为一个非零值(n=保存多少以前版本，设置较大数时要考虑磁盘空间)

设置MINVTIME(文件versioned之前等待的秒数)

2) 重新编译(Relink)内核;

3) 重新启动服务器;

4) 启用Undelete，针对需要设置undelete的目录(例如:/u/data)

undelete -s /u/data

5) 为了察看Versioned情况，设置以下环境变量:

SHOWVERSIONS=1; export SHOWVERSIONS

6) 用文件察看命令察看Versioned的文件，可以根据需要恢复删除或覆盖的文件。

undelete supports the following options:

If the -l， -p， -s， -u and -v options are not specifIEd， undelete recovers the specified files.

-l

print a listing of all versions of the specified file(s)

-p

purge (permanently delete) specified source file(s)

-s

turn the version attribute on for the specified Directories and its subsequent child directories

-u

turn the version attribute off for the specified directories

-v

force the specified file(s) to be versioned

The following additional options are recognized:

-d

normally， if the specified file is a directory， undelete will operate on the files contained in that directory. If this option is specified， undelete operates on the directory itself.

--------------------------------------------------------------------------------

NOTE: undelete does not work on directories that are mounted.

--------------------------------------------------------------------------------

-i

undelete will prompt for confirmation prior to recovering a file that will overwrite the current version of the file. A y answer means that the undeletion should proceed. Any other answer prevents undelete from undeleting the file.

-f

undelete will recover the file(s) without prompting even if it is overwriting over an existing current version of the file. This option overrides the -i option. Note that this is the default if the standard input is not a terminal.