IBM HPSS manual Restarting the Long Running Utilities

root	1456	2034	0	16:04:08	pts/13	0:00	db_convert_bitfile ...
root	1567	1456	0	16:04:08	pts/13	0:00	ksh db2 load ...

Next, issue a 'kill -15 1381', sending a SIGTERM (kill -l, will list all signals and their appropriate number on your system) to the only the conversion C program, and not to any of the other bitfile conversion processes. Note that all C conversion programs begin with lr_db_convert. This will allow the C program to flush its buffers and write a checkpoint record to a file for use by the conversion programs upon using the -restart option. If the improper signal (i.e. KILL) is sent to any of the conversion programs, they may not be able to restart properly. We recommend that you contact your HPSS customer support representative for assistance.

Most long running conversions perform a load/replace operation, which means they will automatically empty or throw away all records (metadata) in the tables they are loading data into from SFS. These programs include:

•db_convert_bftapeseg

•db_convert_bitfile

•db_convert_nstext

•db_convert_storagesegdisk

If needed, rerun the above programs in any order because they always replace the records in the tables they are loading and do not depend on any other conversions.

Other long running conversions perform inserts on certain tables, which means that they will never replace or destroy records (metadata) that exist in the tables when they are run. This is because they depend on other conversion programs (db_convert_nsacl and db_convert_vvtape) that are part of the subsystem conversion program (db_subsys_convert). Because these long running programs perform load insert operations, consider explicitly deleting the records (metadata) from the ABSADDR and NSACL tables in order to prevent errors about duplicate records upon running the long running programs more than once. If the records from these tables (ABSADDR and NSACL) are not deleted then run the db_convert_nsacl and db_convert_vvtape conversions prior to running the corresponding long running program again. The programs that perform load inserts are:

•db_convert_nsobject

•db_convert_storagesegtape

The db_convert_nsobject program performs a load insert into the DB2 subsystem able NSACL and depends on db_convert_nsacl (part of db_subsys_convert) to be run first. The db_convert_storagesegtape program performs a load insert into the DB2 subsystem table ABSADDR and depends on db_convert_vvtape (part of db_subsys_convert) to be run first.

To determine whether the programs completed successfully, search the output file for keywords such as “Error:” and “Warning:”. See Section 6.2.7: Capturing the Metadata Conversion Output on page 185 and Section 6.4: Metadata Conversion Troubleshooting Procedures on page 227. If db_config_convert, db_subsys_convert and all individual long running programs complete successfully, the metadata conversion is finished.

Restarting the Long Running Utilities

The only conversion programs with restart capability are the long running conversion programs. To use the restart capability, run the program with a “-restart” flag. The command to restart will look like this:

db_convert_bitfile -g /.:/encina/sfs/hpss/globalconfig \

HPSS Installation Guide	July 2008
Release 6.2 (Revision 2.0)	207