Volume Manager includes a series of scripts to manage the creation of disk group recovery information.  The /etc/vx/bin/vxconfigbackup script will create disk group back information in the /etc/vx/cbr/bk directory.

If any previous lock files or PID files are present in the /etc/vx/cbr directory a loop condition can occur in the script while it attempts to establish a fresh lock file for the disk group.

When diagnosing a vxconfigbackup hang or stall condition, examine the output of the following command:

# ls -l /etc/vx/cbr
total 2
drwxr-xr-x   4 root     root         512 Dec  5 05:55 bk/

The bk/ directory entry should be the only file in that directory unless a vxconfigbackup process is running.  If any PID or lock files are found, these should be removed.  These files will appear with the format:
 
  <diskgroup name>.####
  <diskgroup name>.lock

Following removal of these files the vxconfigbackup command should complete without issue.

---

Note:  More details about vxconfigbackup and vxprivutil, including syntax and examples, can be found in this article:

"Using vxconfigbackup and vxprivutil to back up the disk group configuration of the Veritas private region"
http://www.symantec.com/docs/S:TECH201329

---