Open System Services Management and Operations Guide (G06.30+, H06.08+, J06.03+)

Glossary
A7CINFO file A configuration file, used in the In the NonStop software management environment, that is
distributed with OSS products and contains information about the contents of all pax archive
files of an OSS distribution subvolume.
absolute pathname A pathname that begins with a slash (/) character and is resolved beginning with the root directory.
access control list
(ACL)
A structure attached to a software object that defines access permissions for multiple users and
groups. It extends the permissions defined by the file-system permission bits by allowing you to
specify the access rights of many individuals and groups instead of just one of each.
ACL See access control list (ACL).
address space The memory locations to which a process has access.
AF_UNIX R2 socket See AF_UNIX socket.
AF_UNIX socket A UNIX domain socket that is implemented via system library code, the new OSS Local Server
2, and the OSS Transport Agent.
allocation error A resource error caused by a failed allocation attempt that generates an EMS event. A resource
allocation is attempted when the resource’s current usage plus the requested resource amount is
less than or equal to the resource’s defined limit.
API See application program interface (API).
application
program interface
(API)
A set of services (such as programming language functions or procedures) that are called by an
application program to communicate with other software components. For example, an application
program in the form of a client might use an API to communicate with a server program.
backout In the NonStop software management environment, the action of making the last configuration
applied to the target system inaccessible and replacing it with the previous configuration.
Bounded open
resource
An OSS file-system resource that is used to control the number of OSS opens or operations on
OSS opens. A bounded resource has its own specific limit that may not be exceeded. Bounded
open resources are also limited by available PXS and PXS64 memory. For more information
about bounded resources, see “OSS File System Resources Overview” (page 94).
See also Unbounded open resource.
Coordinated
Universal Time
(UTC)
The standard measure of time from the beginning of the current Epoch. UTC is sometimes called
Universal Coordinated Time, CUT, or UCT; the standard appellation is abbreviated as UTC, an
arbitrary ordering of the letters. UTC was formerly called Greenwich mean time (GMT).
See also Epoch.
creation pool The set of disk volumes currently used for new file creation for a fileset. The creation pool is
defined by the storage-pool file for the fileset and is a subset of the storage pool for the fileset.
creation version
serial number
(CRVSN)
A number assigned by the disk process when a file is created. The CRVSN is used by the disk
process and the OSS name server process to verify that access to the correct file occurs. The
CRVSN is stored in the catalog entry for a regular file and is passed to the disk process when a
Data Definition Language (DDL) request is made that involves the file.
CRVSN See creation version serial number (CRVSN).
device A computer peripheral or an object that appears to the application as such.
See also terminal.
directory A type of file that contains directory entries, which name links to other files. No two directory
entries in the same directory have the same name.
distribution
subvolume (DSV)
A subvolume containing program files for a particular software product along with the software
release document (softdoc) file for that product. The format for an HP DSV name is Ynnnnrrr
or Rnnnnrrr where nnnn is the software product number and rrr is the base version identifier
(such as G01) or software product revision (SPR) identifier (such as AAB.)
DSV See distribution subvolume (DSV).
EMS See Event Management System.
Epoch The period beginning January 1, 1970, at 0 hours, 0 minutes, and 0 seconds Coordinated
Universal Time (UTC).
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