Incremental Catalog backup fails with Status 41 (network connection timeout)

An Incremental Catalog Backup fails with Status 41 (network connection timeout), whereas the Full Catalog Backup completed in approximately 20 minutes.

Troubleshooting:

The bpbrm log file on the media server ( /usr/openv/netbackup/logs/bpbrm/log. )  shows the error:

15:38:11.876 [18923] <16> bpbrm main: db_FLISTsend failed: network connection timed out (41) 

Following a 10-minute delay, the bpbkar log file on the client (/usr/openv/netbackup/logs/bpbkar/log. ) shows the error:

15:28:12.868 [18954] <2> bpbkar SelectFile: INF - Resolved_path = /usr/openv/netbackup/db/images/master1/1231000000/SYM_INC_1231711779_UBAK.f

15:38:59.484 [18954] <4> bpbkar PrintFile: /data/openv/netbackup/db/images/master1/1231000000/

15:38:59.484 [18954] <16> bpbkar sighandler: ERR - bpbkar killed by SIGPIPE

15:38:59.484 [18954] <2> bpbkar sighandler: INF - ignoring additional SIGPIPE signals 

Creating or amending  the file /usr/openv/netbackup/bin/DBMto to contain the value "30" increases the timeout (from the default of 10 minutes) allowing the incremental backups to complete.  However, it was found that the incremental backup then took around 8 hours to complete.

The bpdbm log ( /usr/openv/netbackup/logs/bpdbm/log. ) shows:

10:31:34.768 [19001] <2> add_files: updating

/usr/openv/netbackup/db/images/master1/1243000000/tmp/NB-Catalog_1243231645_INCR.f

10:48:29.184 [19001] <2> add_files: 5000 files added to

/usr/openv/netbackup/db/images/master1/1243000000/tmp/NB-Catalog_1243231645_INCR.f

10:48:35.557 [22486] <2> add_files: updating

/usr/openv/netbackup/db/images/master1/1243000000/tmp/NB-Catalog_1243231645_INCR.f

11:05:50.079 [22486] <2> add_files: 5000 files added to

/usr/openv/netbackup/db/images/master1/1243000000/tmp/NB-Catalog_1243231645_INCR.f

The delays can be seen between the entries for "add_files: updating" and "add_files: 5000 files added", for a given process, which has cumulative effect on the time the Catalog backup takes.

Solution:

• Create /usr/openv/netbackup/bin/DBMto with the entry "30" to correct the Status 41 Error, restart the NetBackup services.
• Create the file /usr/openv/netbackup/MAX_FILES_PER_ADD, with the entry 500, restart the NetBackup services.

It was found that following these changes, the Incremental Catalog backup successfully completed in 15 minutes