Cisco Headend System Release 2.7 Installation Guide

 

94 

4038415 Rev A 

If your upgrade is unsuccessful, you may need to use the procedures in this section 
to restore your system to its condition prior to the upgrade and then to reattach disk 
mirroring on the DNCS. 

Important:  Be sure to notify Cisco Services before concluding that an upgrade has 
failed and before following any of the procedures in this section. In many cases, 
Cisco Services can help you easily resolve the problems related to the failed upgrade. 
In addition, the procedures in this section apply only if you have not yet completed 
the Re-Enable the Disk Mirroring Function (on page 91) procedure. If you have 
already enabled disk-mirroring on the DNCS, you will have to restore your system 
using your latest  file system and database backup tapes. 

 

Follow these instructions to roll back the DNCS from an unsuccessful upgrade to SR 
2.8.2/3.8.2/4.3.2. 

Note:  You need to be at the CDE Login window to begin this procedure. If you are 
unable to get to the CDE Login window, call Cisco Services for assistance. 
1  In the Stop System Components (on page 43) section of Chapter 1, follow the 

Stopping the Application Server (on page 43) and Stopping the DNCS (on page 
44) procedures, if necessary. 

2  From an xterm window on the Application Server, type shutdown  -g0  -y  -i0 

and then press Enter. The system halts all processes on the Application Server 
and an ok prompt appears. 

3  Insert the CD labeled DBDS Maintenance CD into the CD drive of the DNCS. 
4  Log in to the DNCS as root user. 
5  Open an xterm window on the DNCS. 

Note:  You will have root permissions in the xterm window. 

6  Has the system been rebooted since the upgrade? 

 

If yes, go to step 7. 

 

If no, type the following command and press Enter. Log on as root user and 
go to step 7. 

7  Type the following command and press Enter. A message appears that seeks 

confirmation to make bootable the disk device that contains the old software.