Cisco Headend System Release 2.7 Installation Guide
Chapter 2 SR 2.8.1/3.8.1/4.3.1 Upgrade Procedures
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Detach Disk Mirrors on the DNCS
In Examine Mirrored Devices (on page 13), sites confirm the disk mirroring function
is working correctly before beginning the upgrade process. In this procedure you
now disable the mirroring functions on the DNCS to ensure that the contents of the
mirrored disk reflects the data and configuration of the DNCS prior to an upgrade. If
the upgrade fails for any reason, you can then swap the positions of the mirrored
disks to restore your system to its condition prior to the upgrade attempt.
Note: Disabling disk mirroring is usually referred to as detaching disk mirroring.
is working correctly before beginning the upgrade process. In this procedure you
now disable the mirroring functions on the DNCS to ensure that the contents of the
mirrored disk reflects the data and configuration of the DNCS prior to an upgrade. If
the upgrade fails for any reason, you can then swap the positions of the mirrored
disks to restore your system to its condition prior to the upgrade attempt.
Note: Disabling disk mirroring is usually referred to as detaching disk mirroring.
Detaching Disk Mirrors on the DNCS
Follow these instructions to detach the disk mirroring function of the Enterprise 450
or Sun Fire V445, V880, or V890 DNCS.
Note: You should still be logged in as root user to an xterm window on the DNCS.
1 Insert the CD labeled DBDS Maintenance CD into the CD-ROM drive of the
or Sun Fire V445, V880, or V890 DNCS.
Note: You should still be logged in as root user to an xterm window on the DNCS.
1 Insert the CD labeled DBDS Maintenance CD into the CD-ROM drive of the
DNCS.
2 Type df -n and then press Enter. A list of the mounted filesystems appears.
Note: The presence of /cdrom in the output confirms that the system correctly
mounted the CD.
mounted the CD.
3 Type /cdrom/cdrom0/s3/backup_restore/mirrState -d and then press Enter. The
system displays the following message:
WARNING!!
Proceeding beyond this point will DETACH all d7xx submirrors.
Are you certain you want to proceed?
WARNING!!
Proceeding beyond this point will DETACH all d7xx submirrors.
Are you certain you want to proceed?
4 Type y and then press Enter. The system disables the disk mirroring functions on
the DNCS.
5 Type eject cdrom and then press Enter. The system ejects the CD.