Hello Dean,
are you sure that vxconfigbackupd is running ? If it is running, how long is it been running ?
As you mentioned that system has booted without many rc scripts, please note, vxconfigackup has relation with
S95vxvm-recover script.
/etc/vx/bin/vxconfigbackupd: This daemon is executed automatically on reboot as part of the
/etc/rc2.d/S95vxvm-recover script and will monitor changes to the Volume Manager configuration and automatically records any configuration changes that occur.
If you want to take manual backup:
To back up a single disk group manually :
# /etc/vx/bin/vxconfigbackup oradg
Start backing up diskgroup oradg to /etc/vx/cbr/bk/oradg.1071722106.138.gopal ..
To back up all disk groups :
# /etc/vx/bin/vxconfigbackup
V
xVM vxconfigbackup ERROR V-5-2-3694 Configuration Copy for diskgroup rootdg has
not changed since last backup (Thu Jan 8 15:55:20 EST 2004). Backup is not necessary.
Start backing up diskgroup datadg to /etc/vx/cbr/bk/datadg.1075436149.168.gopal...
VxVM NOTICE V-5-2-3100 Backup complete for diskgroup: datadg
VxVM vxconfigbackup ERROR V-5-2-3694 Configuration Copy for diskgroup oradg has
not changed since last backup (Thu Feb 12 16:19:59 EST 2004). Backup is not necessary.
To back up to an alternative location of the configuration database:
# /etc/vx/bin/vxconfigbackup -l /tmp/orgdgbck oradg
Start backing up diskgroup oradg to /tmp/oradgbck/oradg.1071722106.138.gopal ...
VxVM NOTICE V-5-2-3100 Backup complete for diskgroup: oradg
Hope this helps
Refer below for more details
http://seer.entsupport.symantec.com/docs/263929.htm
Gaurav