netbackup upgradation form 2.7 to 3.0 is hung

thanks for reply.

i have found solution in other means which really worked.please find the steps below:

Troubleshooting
===================
+ Attempting to check progress shows 2%, and also a strange "Command cleanup_unused_initrd" message:
name456.Software> List version
Appliance Version: 2.7.2
NetBackup Version: 7.7.2


name456.Software> UpgradeStatus

The target version is: 3.0

Command cleanup_unused_initrd is completed.The upgrade is 2% completed.

---+ Attempt to elevate, and this indicates SDCSS Util Daemon is not reachable:
maintenance-!> /opt/Symantec/sdcssagent/IPS/sisipsoverride.sh
Symantec Data Center Security Server Policy Override

Unable to communicate with the SDCSS Util Daemon.


+ IPMI appears to be configured:
name456.Support> IPMI Network Show


---+ Run "IPMI Network Reset," IPMI seems to be working now.
---+ Launch JViewer.
+ Try stopping InfraServices, as well as Processes > AdminConsole services.

+ Reboot Appliance.
---+ Follow 000100628 to disable SDCSS.

+ Reboot continues; rollback appears to initiate.
---+ Some potential errors when rolling back to MSDP storage checkpoints, e.g.:
V-3-24623: storage checkpoint list failed onl, Permission denied (13)


+ Rollback completes:
name456.Software> List Version
Appliance Version: 2.7.2
NetBackup Version: 7.7.2


The appliance version is 2.7.2 and not in upgrade state.

---+ Remove old pre-upgrade checkpoint.
name456:/home/maintenance # lvscan


---+ Checked patch_log_3.0.
-----+ Long repeating messages waiting for bptm to terminate:


Looking for NetBackup processes that need to be terminated.
Stopping nbsvcmon...

There may be backups and/or restores active.
They will be terminated....
Killing bptm processes...
Waiting for active bptm processes to terminate
Waiting for active bptm processes to terminate
Waiting for active bptm processes to terminate
Waiting for active bptm processes to terminate
Waiting for active bptm processes to terminate
Waiting for active bptm processes to terminate
Waiting for active bptm processes to terminate
...

---+ Set media server to administrative pause to prevent jobs from starting during upgrade:
name456:/log # nbemmcmd -updatehost -machinename name456 -machinetype media -machinestateop set_admin_pause -masterserver name123
NBEMMCMD, Version: 7.7.2
Command completed successfully.

+ Retry upgrade to 3.0.
---+ Eventually reaches 1%, but several minutes elapse before the new patch_log_3.0_* file appears.
---+ Seems to get past the stop_nbu subroutine this time.
+ Reaches 13%.

+ Eventually reaches post-upgrade checkpoint.

---+ Need to clear admin pause:
# nbemmcmd -updatehost -machinename name456 -machinetype media -machinestateop clr_admin_pause -masterserver name123

===================
References
===================
How to skip the backup/restore portion of the self_test when upgrading NetBackup 52xx appliances.
    Article:000070876
    Publish:October 21, 2015
    Article URL:http://www.veritas.com/docs/000070876

CAUSE:
------------------------------
+ Initial upgrade failed due to hanging bptm processes that could not be terminated.

SOLUTION/WORKAROUND:
------------------------------
+ Remove previous pre-upgrade checkpoint:
name456:/home/maintenance # lvscan


name456 :/home/maintenance # ls -la /repository/checkpoints/


---+ Place media server in Administrative Pause:
name456:/log # nbemmcmd -updatehost -machinename name456 -machinetype media -machinestateop set_admin_pause -masterserver name123
NBEMMCMD, Version: 7.7.2
Command completed successfully.

+ Retry upgrade to 3.0.
---+ Eventually reaches 1%, but several minutes elapse before the new patch_log_3.0_* file appears.
---+ Seems to get past the stop_nbu subroutine this time.
+ Reaches 13%.

+ Eventually reaches post-upgrade checkpoint.
+ Customer will validate NetBackup is working.
---+ Need to clear admin pause:
# nbemmcmd -updatehost -machinename name456 -machinetype media -machinestateop clr_admin_pause -masterserver  name123