Open System Services Management and Operations Guide (G06.25+, H06.03+)

Glossary
Open System Services Management and Operations Guide—527191-002
Glossary-4
pathname resolution
pathname resolution. In the OSS environment, the process of associating a single file with
a specified pathname.
pipe. An unnamed FIFO, created programmatically by invoking the pipe() function or
interactively with the shell pipe syntax character (|). A shell pipe redirects the standard
output of one process to become the standard input of another process. A
programmatic pipe is an interprocess communication mechanism.
relative pathname. A pathname that does not begin with a slash (/) character. A relative
pathname is resolved beginning with the current working directory. Contrast with
absolute pathname.
root. See root fileset and root directory. See also super ID.
root directory. A directory associated with a process that the system uses for pathname
resolution when a pathname begins with a slash (/) character.
root fileset. The fileset with the device identifier of 0, normally containing the root directory
for the OSS file system in an HP NonStop S-series or NonStop NS-series system. HP
recommends that this fileset be named “root”.
root user. The user with the user name of root.
saveabend file. A file containing dump information needed by the system debugging tool on
a NonStop system. In UNIX systems, such files are usually called core files or core
dump files. A saveabend file is a special case of a save file. See also save file.
save file. A file created through the Inspect or Debug product. A save file contains enough
information about a running process at a given time to restart the process at the same
point in its execution. A save file contains an image of the process, data for the
process, and the status of the process at the time the save file was created.
A save file can be created through an Inspect SAVE command at any time. A save file
called a saveabend file can be created by the DMON debug monitor when a process’s
SAVEABEND attribute is set and the process terminates abnormally.
storage pool. The set of disk volumes that contain files for a specific fileset or that can be
used to contain files for a specific fileset. The storage pool includes the creation pool.
storage-pool file. A file containing a list of disk volumes to be used when creating new files
in a fileset. As these volumes are filled, more volumes can be added to the storage-
pool file.
superblock. The part of the OSS environment that contains all the information about the
current state of the OSS file system. The superblock contains such items as the free
list and the size of inodes.