Console Commands › Console Commands › RESTART BACKSTORE

RESTART BACKSTORE

This command is used to gracefully stop and release all acquired Backstore resources.

When this command is issued, CA Vtape does the following:

• Gracefully stops all Externalization tasks in progress, releasing the Backstore Tape Devices, USS mount points, or both.
• Gracefully stops all Recall tasks in progress, releasing the Backstore Tape Devices, USS mount points, or both.
• Holds all Externalization Groups
• Restarts the affected SVTSAS.SVTnPT address space

The Backstore Engine might not respond to a restart command if it is waiting for communication from the operating system or a Backstore Tape Device. In these situations, the Backstore Engine can be unconditionally interrupted by reissuing the Restart command with the optional Cancel parameter, that is, SVTn Restart Backstore,Cancel.

Syntax

SVTn Restart Backstore [,Cancel]

Example of information displayed by the RESTART BACKSTORE command

SVT1 R B
SVT1X0101I Command Scheduled in SVTS
SVT1X0100I Command Complete 
SVT1A0001I SVT1PT   Stopping                                              
CTS014  IEF234E K 0752,508039,PVT,SVTSAS,SVT1PT
IEF234E K 0752,508039,PVT,SVTSAS,SVT1PT
IEF170I 1 SVTSAS   CAJR250I STEPNAME STEP   PGM=   CCODE  EST-COST 
IEF170I 1 SVTSAS   CAJR251I SVT1PT      1 SVTSAS   0000     $35.54 
IEF404I SVTSAS - ENDED - TIME=15.10.01  
IEF170I 1 SVTSAS   CAJR252I JOB ENDED. TOTAL EST-COST       $35.54 
$HASP395 SVTSAS   ENDED 
$HASP100 SVTSAS   ON STCINRDR 
$HASP373 SVTSAS   STARTED
ACF9CCCD USERID SVTSAS   IS ASSIGNED TO THIS JOB - SVTSAS
IEF403I SVTSAS - STARTED - TIME=15.10.01 
SVT1A0000I SVT1PT   Ready

Important! If the Cancel option is used when Externalization tasks are active, the Backstore Tapes that were mounted should be released from further processing by issuing the SVTn SET BACKSTORE=EXCLVOL,VOLser=volser console command when the Backstore Engine address space is active again. This is necessary because the tasks were prevented from saving the last file sequence number used by the cancel. If these physical tapes are remounted by the Backstore Engine, they must be read sequentially to determine the appropriate file sequence number to use. This could result in a significant delay for Externalization as each task started reads its PRIMARY tape sequentially and then, if duplexing is active, repeats the action for its DUPLEX tape.