Restoring MPE/iX Files [ New Features of MPE/iX: Using the Hierarchical File System ] MPE/iX 5.0 Documentation
New Features of MPE/iX: Using the Hierarchical File System
Restoring MPE/iX Files
You can restore an MPE/iX file set by using the RESTORE command. The
file set name syntax and scanning rules for RESTORE are exactly the same
as for STORE. (Refer to "How to specify MPE/iX files" earlier in this
chapter.)
The CREATE option of the RESTORE command has been enhanced to provide the
CREATE=PATH option. This option is used to create the required paths for
a RESTORE.
NOTE The default file set for RESTORE continues to be file set @[.@[.@]]
depending on whether the user has NONE, AM, or SM capabilities. If
the DIRECTORY option is specified, the default file set is empty.
What Gets Restored
At RESTORE time, only files are restored by default. The directory
matches are also restored if either the DIRECTORY or CREATE=PATH options
is specified. If the RESTORE command specifies a file set including only
MPE-named files, then only MPE-named files can be restored. If a RESTORE
command specifies an HFS-named file set, then all files and directories
are restored from the media. As with STORE, specifiying the wildcard
character @ for one filename portion of an MPE-named file will cause it
to be mapped to include both HFS and MPE named files.
Reloading Hierarchical Directories
You can regenerate the hierarchical directory structure and the UID and
GID databases by restoring the directory information stored on the media.
The following rules should be followed when regenerating the hierarchical
directory structure:
* You need to specify the DIRECTORY option with the RESTORE command
to regenerate the entire hierarchical directory structure. The
entire directory structure is regenerated before restoring any
files if the information is available on the media (that is, if
the DIRECTORY option was used at STORE time). You must have
either SM or OP capability to use the DIRECTORY option.
* If you use the CREATE option with the RESTORE command, all
directories matching the specified file set are restored.
* If you use the CREATE option with the RESTORE command and the
media is missing a directory that is required to restore a file,
then the required directory is created with default security
provisions.
* If you do not use the CREATE option with the RESTORE command, an
error message is printed for every file that cannot be restored
due to a nonexistent directory component.
MPE/iX 5.0 Documentation