Showing I/O Device Status with SHOWDEV [ Getting System Information Programmer's Guide ] MPE/iX 5.0 Documentation
Getting System Information Programmer's Guide
Showing I/O Device Status with SHOWDEV
The SHOWDEV command reports the status of input and output devices on the
system. Entered without parameters, SHOWDEV displays status information
for all output and input devices. The display looks like this:
:SHOWDEV
LDEV AVAIL OWNERSHIP VOLID DEN ASSOCIATION
1 DISC 43 FILES
6 SPOOLED SPOOLER OUT
8 AVAIL
20 A UNAVAIL #S311: 2 FILES
If applicable, the following information is shown:
Column Meaning
LDEV The logical device number. If applicable, also shows:
J - Accepts jobs
D - Accepts data
A - Accepts jobs and data
AVAIL Lists availability of devices and disks as follows:
AVAIL Available as a real, nonshareable device.
SPOOLED Available using input or output spooling.
UNAVAIL Not available (under the control of a job,
session, or system process).
DISC Always available.
OWNERSHIP Device ownership; may show one of the following:
SYS Controlled by the system. Process
identification number (PIN) of the
controlling process may also be shown.
SPOOLER IN Input spooling in effect.
SPOOLER OUT Output spooling in effect.
#Jnnn Controlled by the job indicated.
#Snnn Controlled by the session indicated.
DIAG Allocated to diagnostic testing by system
operation.
nn FILES Number of files currently in use on a disk.
DOWN Device is offline, requested by system
operator.
DP Device is being taken offline (DOWN command
is pending).
VOLID Volume identification; may include one of the following:
IBM Volume label is written in IBM format.
ANSI Volume label is written in ANSI format.
NOLABEL Volume has no label (default).
DEN Tape density; may include one of the following:
6250 Density of 6250 BPI.
1600 Density of 1600 BPI, or density is
unrecognizable.
ASSOCIATION Indicates logical devices (by class) that have been
established by the user with the ASSOCIATE command.
MPE/iX 5.0 Documentation