Generated from C.60.01 /SYS/PUB/CICAT last modified on Thu Jan 11 09:18:52 2001
Initiates, starts, and stops the SPU Switchover/XL environment, displays status information, and displays the system name. SPU Switchover/XL is not a part of the 900 Series HP 3000 Computer System Fundamental Operating Software and must be purchased separately.
SETUP SHOWSPU SPUCONTROL [ACTION=]START STATUS STOP
SETUP Initializes the SPU Switchover/XL environment that you created using the SYSGEN utility SPU commands. This parameter eliminates rebooting the system to activate configuration changes. Usage requirements of this parameter are as follows: o You can enter SPUCONTROL SETUP only on the system where you performed the configuration. o If you change the configuration, you must enter SPUCONTROL SETUP before entering SPUCONTROL START. Using this parameter automatically sends a copy of the new configuration file from the system where the configuration is being performed to the other system, enabling synchronization across system pairs. If you mounted volume sets on the current system only for configuration purposes, this parameter returns the volume sets to their home system. However, in order for this action to occur, you must first close all switchable volume sets that this parameter should return to their home system.
The SPUCONTROL SETUP command pushes all closed volume sets from the system where the configuration changes were made, to the other system, if that system was designated as the home system. The SPUCONTROL SETUP command does not pull volume sets from the other system to the system where the configuration changes were made. SHOWSPU Displays the name of this system as defined in the SPU Switchover/XL configuration file. START Establishes a system status message between the system pairs that enables each system to determine if its partner is operative. SPUCONTROL START is a prerequisite for the SWITCHOVER command. If both systems are running, you can enter SPUCONTROL START from either the home or the alternate system. Entering the command once from either system affects both systems. You can also enter SPUCONTROL START when one of the system pairs is inoperative. In this case, SPU Switchover/XL does not initiate a system status message and checks only the operative system's SPU configuration file. STATUS Displays the SPU Switchover/XL status for this system and its partner system. STOP Terminates the system status message between the system the system pairs previously initiated with the SPUCONTROL START command. You can enter SPUCONTROL STOP from either the home or the alternate system to stop the system status message for the system pair. Note that you must enter SPUCONTROL STOP before you can reconfigure the SPU Switchover/XL environment.
The function of the SPUCONTROL START command does not remain after rebooting one of the system pairs. The default state of a system after rebooting is the same as entering the SPUCONTROL STOP command.
To automatically initialize the SPU Switchover/XL environment after rebooting a system, you should include the SPUCONTROL START command in the SYSSTART file. After reconfiguring the SPU Switchover/XL environment, you must enter the SPUCONTROL SETUP command before entering the SPUCONTROL START command. Similarly, you must enter the SPUCONTROL START command before entering the SWITCHOVER command. You can enter this command only from the system console and must have OP or SM capability.
The following examples show system responses for each parameter when you enter the SPUCONTROL command: SETUP A display similar to the following appears if you enter SPUCONTROL SETUP: #S3/38 SPUCONTROL SETUP IS STARTING. HH:MM/ldev#/SPUCONTROL SETUP COMPLETE. SHOWSPU A display similar to the following appears if you enter SPUCONTROL SHOWSPU on Alpha: THE SPU SWITCHOVER SYSTEM NAME IS ALPHA. START A display similar to the following appears if you enter SPUCONTROL START: SWITCHOVER ENVIRONMENT IS ESTABLISHED BETWEEN homesystem AND altsystem. STATUS A display similar to the following appears when both the home and alternate systems are running: System Volume Sets Home System ------ ----------- ----------- Alpha a_production_data_set Alpha a_user_vol_set Alpha a_mirror_disk_set Alpha Beta b_test_software_set Beta b_benchmark_set Beta A display similar to the following appears if you switch over from the home system (Alpha) to the alternate system (Beta): System Volume Sets Home System ------ ----------- ----------- Beta b_test_software_set Beta b_benchmark_set Beta a_production_data_set Alpha a_user_vol_set Alpha a_mirror_disk_set Alpha STOP A display similar to the following appears if you enter SPUCONTROL START: SWITCHOVER ENVIRONMENT IS TERMINATED BETWEEN altsystem AND homesystem. Commands: SYSGEN, SWITCHBACK, SWITCHOVER Manuals : SPU Switchover/XL User's Guide (36378-90001) System Startup, Configuration, and Shutdown Reference Manual (32650-90042) Back to Main Index