TS/MP System Management Manual (H06.05+, J06.03+)

Overview of PATHCOM
HP NonStop TS/MP System Management Manual—541819-007
8-8
File Name Expansion
•
$volumeIdentifies a physical disk pack mounted on a disk unit
•
subvolumeIdentifies a disk file as a member of a related set of files as defined
by the user
•
file–identifierIdentifies a particular file within the subvolume
File names of disk files are represented to HP subsystem programs by these four parts
concatenated into a contiguous string. Each part is separated from the other by a
period as follows:
\node.$volume.subvolume.file–identifier
When you supply only a partial file name as a command parameter, the internal
representation of the file name is expanded into the full four-part file name. As a
minimum, a partial file name must consist of the file identifier.
Each process and each device, such as a tape drive or printer, is identified the same
way a disk file is identified. For example:
\TSB.$TAPE1
specifies a particular tape drive on the system named \TSB. If a Pathway environment
is running on this system, only $TAPE1 is required for the file name.
File Name Expansion
File name expansion is accomplished through the use of default names. If you omit
the node, volume, or subvolume name in a command parameter, PATHCOM uses
system defaults to expand the file name before passing the name to the PATHMON
process.
To get the default for the node name, PATHCOM first determines whether the SET
PATHWAY NODEINDEPENDENT attribute is set to ON. If NODEINDEPENDENT is
ON, the default node name is \* , a generic name representing the node where the
PATHMON process is currently running. For information on configuring for the node
independence, see Specifying Node Independence and SET PATHWAY Command.
If the SET PATHWAY NODEINDEPENDENT attribute is set to OFF, PATHCOM uses
the node name you supply in the CMDVOL command. PATHCOM also uses the
default volume and subvolume names specified in the CMDVOL command. For
information on the CMDVOL command, see CMDVOL Command.
Although the PATHMON process uses system names, it does not store server process
names (nor Pathway/iTS TCP names) in fully qualified network form. All other file
names are kept in the form:
\node.$volume.subvolume.file–identifier