StorageTek Host Software Component 6 User Manual

Page of 718
110   VM/HSC 6.0 System Programmer’s Guide
1st ed., 6/30/04 - 312579601
LMUPDEF Command and Control Statement
The LMUPDEF command and control statement is used to specify the definition data set 
that contains network LMU attachment (LMUPATH) statements. The data set must be a 
sequential or a partitioned data set (PDS) with any valid record format (RECFM). Also, 
the data set must contain one or more LMUPATH statements. 
The LMUPDEF statement can be specified in PARMLIB, or it can be issued as an 
operator command to dynamically load or reload LMUPATH parameters. (Refer to 
‘‘PARMLIB Control Statements’’ in the HSC Installation Guide for an explanation of 
PARMLIB.) 
If a definition file is changed by a LMUPDEF operator command, and if the change is to 
be permanent, you must update PARMLIB before restarting the HSC. If the definition file 
is to be modified for a given shift or application, remember that the new definition remains 
in effect until another definition is loaded or the HSC is recycled. The definition file then 
reverts to the PARMLIB specification. Thus, LMUPDEF can be used to temporarily 
change a definition file.
Definition commands issued on one host are in effect only on that host. If different hosts 
use the same definition data set, the LMUPATH parameter statements are shared by those 
hosts. 
Notes: 
 1. Users can find additional important TCP/IP-related information by referring to 
“Dynamic LMU Connection” on page 70.  To display the LMUPDEF data set, refer 
to Display LMUPDEF in the HSC Operator’s Guide.  
 2. When the LMUPDEF command is issued, if the definition data set contains errors, an 
HSC message provides the parameter in error, a description of the problem, and the 
line number where the error occurred. If the definition data set contains errors, none 
of the attributes specified in the LMUPATH control statement(s) will be loaded (put 
into effect). Message SLS1627I is displayed if errors are encountered. If 50 errors are 
encountered, the remainder of the data set is not checked. Correct the problem and 
reissue the command. 
 3. The LMUPDEF command and control statement executes at both base and full 
service levels of the HSC. 
 4. If you issue multiple LMUPDEF commands or statements, the last one processed is 
currently active. You can determine which LMUPDEF statement is active by 
entering the Display LMUPDEF command.
 5. In order for the new IP addresses to take effect, users must first establish IP addresses 
with the LMUPDEF command. Next, vary the ACS(s) offline and then online, using 
the Vary ACS operator command. 
LMUPDEF