HP 3000 Manuals HP 3000 Manuals
System Management Considerations
System administrators should be aware of the following considerations
concerning MPE/iX at Release 4.5 and 5.0:
Syntax * The HPPATH system variable does not accept HFS
pathnames. Consequently, you cannot include HFS
pathnames in the default search path for a session.
* Remote file access does not support HFS syntax.
Directories * The following types of files can be located only
within MPE groups; they cannot be located within HFS
directories:
* UDC files
* Databases
* Compatibility mode files (for example, CIR,
KSAM, RIO)
Security * ACDs are automatically assigned to HFS directories and
files residing within those directories. Also,
directories and files in root or accounts.
* You cannot assign ACDs to the root directory, MPE
accounts, or MPE groups.
* Successful logon for users without SM capability
requires valid UID and GID entries in the user and
group databases.
* By default, any user can create files in the /tmp
directory. This directory is automatically created
when you update to Release 4.5 or 5.0. While this
behavior is desirable for POSIX-based applications,
some system managers may want to restrict access to
this directory.
Commands * Frequently used MPE commands directly support HFS
syntax, some do not.
* The HELLO and JOB commands only log on to a group.
* The FILE command allows HFS pathnames only on the
right side of the equation.
* You should use the DISKUSE command instead of the
REPORT command to report on disk usage of HFS
directories that exist outside groups and accounts.
Groups * Databases are supported only in MPE groups.
* Compatibility mode files can reside only in MPE
groups.
Accounting * MPE account or group-level accounting does not extend
to directories residing outside of accounts.
System management tasks remain essentially the same with Release 5.0.
Tasks such as system startup and shutdown, system configuration, system
logging, adding user accounts and groups all work the same with some
minor enhancements to access HFS features. By default, existing MPE/iX
commands and intrinsics assume MPE syntax. You must deliberately
activate new features to use them.