HP 3000 Manuals HP 3000 Manuals
Appendix B SYSGEN Utility SYSGEN SPU Commands The SYSGEN configuration program allows you to configure your systems for SPU Switchover/XL. A first-level command, SPU, enters you into a second-level menu of SPU Switchover/XL commands.
NOTE SPU configuration changes cannot be saved while there is an active SPU Switchover/XL process running. If one exists, the SPUCONTROL STOP command must be issued to terminate the process and its system status message.
To enter SYSGEN and the second-level menu for the SPU Switchover/XL commands, enter the following at the system prompt: : SYSGEN Return sysgen> SPU Return The following SYSGEN SPU commands are displayed: _____________________________________________________________ | | | sysgen> SPU | | | | ** SPU Switchover commands ** | | | | apair (ap) asystem (as) avolset (av) dpair (dp)| | dsystem (ds) dvolset (dv) show (sh) | | | | clear (cl)(c) exit (ex)(e) help (he)(h) hold (ho) | | oclose (oc) redo | _____________________________________________________________ Figure B-1. SYSGEN SPU Commands Following are descriptions of how each SYSGEN SPU command is used to configure your systems for SPU Switchover/XL. APAIR Adds a pair of interconnected SPUs, which have been identified with the ASYSTEM command, to the configuration file. This command establishes a relationship between the two SPUs. For example, to establish the alternate system (Beta) as a backup for the home system (Alpha), the following command is entered on the home system (Alpha): spu> APAIR HOME=ALPHA ALT=BETA Return If you want the alternate system (for example, Beta) to be a home system with the home system (for example, Alpha) as its backup, the following command is entered on the home system (Alpha): spu> APAIR HOME=BETA ALT=ALPHA Return With this configuration, the home system (Alpha) and the alternate system (Beta) have been established as equal partners (both home and alternate to each other). If the second APAIR command was not entered, the home system (Alpha) would have Beta as its alternate system, but the alternate system (Beta) would not have Alpha as an alternate system. ASYSTEM Adds a system to the configuration file to establish its identity. This command can be used only on the system that is being added as part of a pair. For ease of use, it is recommended that you identify the system by its current network services name (or a variation of it); however, the selected name can be no more than 8 characters in length. For example, to identify a system as Alpha, the following command is entered on system Alpha: spu> ASYSTEM SYSTEM=ALPHA Return To identify a system as Beta, the following command is entered on system Beta: spu> ASYSTEM SYSTEM=BETA Return
NOTE The ASYSTEM command must be executed on each system; it will name the system from which you execute the command.
AVOLSET Defines the volume sets (disks) to be switched over to the alternate system when the home system goes down. These are known as switchable volume sets and must be connected to both systems through a fiber link. They can be mirrored volume sets, but cannot be system volume sets. Multiple switchable volume sets can be defined. The home system for a volume set is defined with the AVOLSET command. The system name must be known by the SPU configuration file by a previous invocation of the ASYSTEM command. For example, to add volume set A_DATA_SET to the home system (for example, Alpha), issue the following command on the home system (Alpha): spu> AVOLSET VOLSET=A_DATA_SET HOME=ALPHA Return DPAIR Deletes a system pair from the configuration file that was previously added using the APAIR command. For example, to delete the system pair Alpha (home system) and Beta (alternate system) from the configuration file, the following command is issued: spu> DPAIR HOME=ALPHA ALT=BETA Return If the systems are set up as equal partners and you want to delete both partnerships, a second DPAIR command also must be issued: spu> DPAIR HOME=BETA ALT=ALPHA Return DSYSTEM Deletes a system from the configuration file that was previously added using the ASYSTEM command. For example, to delete system Alpha from the configuration file, the following command is issued: spu> DSYSTEM SYSTEM=ALPHA Return DVOLSET Deletes a volume set from the configuration file that was previously added using the AVOLSET command. For example, to delete volume set DATA_SET from the configuration file, issue the following command on the home system (Alpha): spu> DVOLSET VOLSET=DATA_SET Return HELP Displays help information about all of the spu> commands or individual commands. To display all of the spu> commands, enter the following command: spu> HELP ALL Return Following is an example of what is displayed: ________________________________________________________________________ | | | spu> HELP ALL | | | | command (abb) parameter=value | | _____________ _______________ | | apair (ap) home = system name | | alt = system name | | | | asystem (as) system = system name | | | | avolset (av) volset = volume set name[,volume set name, ...]| | home = system name | | | | dpair (dp) home = system name | | alt = system name | | | | dsystem (ds) system = system name | | | | dvolset (dv) volset = volume set name[,volume set name,...] | | | | show (sh) [home = system name | | alt = system name] | | [dest = OFFLINE] | ________________________________________________________________________ Figure B-2. SYSGEN SPU HELP Command SHOW Shows the currently configured switchover system pairs. A system pair can be specified by name on the command line. If no system pair is specified, all pairs in the configuration file are listed. For example, if the SHOW command is issued without a parameter, volume sets are listed as shown in Figure B-3 : __________________________________________________ | | | spu> SHOW Return | | | | Home Alternate Volume Sets | | _____ _________ ___________ | | Alpha Beta a_production_data_set| | a_user_vol_set | | a_mirror_disk_set | | | | Beta Alpha b_test_software_set | | b_benchmark_set | __________________________________________________ Figure B-3. SYSGEN SPU SHOW Command If the SHOW command is issued with the HOME parameter specified, volume sets are listed as shown in Figure B-4 : ________________________________________________ | | | spu> SHOW HOME=BETA ALT=ALPHA Return | | | | Home Alternate Volume Sets | | ______ ________ ___________ | | Beta Alpha b_test_software_set| | b_benchmark_set | ________________________________________________ Figure B-4. SYSGEN SPU SHOW Command with Parameters