Specifications

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Cisco Internet Streamer CDS 2.0-2.3 Software Configuration Guide
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Chapter 8 Maintaining the Internet Streamer CDS
Backup and Recovery Procedures
• Degraded—One of the disks has failed. It is highly recommended that a new disk is added to repair
the volumes.
• Bad—Both disks have failed. The system has likely lost all but basic functionality.
Note If both system disks fail, a CDS state of “missing disk-based software” occurs.
Normally, when a problem occurs on one system disk, a disk failure or RAID alarm is triggered. If this
occurs, replace the failed disk. See the “Disk Maintenance” section on page 8-26.
The CDS state of “missing disk-based software” is most likely to occur if you replaced both system disks
in your Service Engine, Service Router, or CDSM. By design, the software installation on the system
disks cannot be corrupted by a system failure or a power failure.
If both system disks fail or are missing, the software continues to run. However, it runs in a basic
functionality mode in which HTTP proxy and related HTTP features still work, but most other features
fail.
Caution This procedure should only be used as a last-resort method to recover the system software on a unit.
Typically, the sysfs automatically repairs itself across a reboot if any new disks are detected.
If the volumes are degraded and a new disk is present at reboot, the new disk is added to the existing
array (sync starts). If the volumes are “bad” and a new disk is present at reboot, the initial sysfs volume
will be built on the disk.
To recover from this condition, do the following:
Step 1 Remove the Service Engine record from the CDSM.
a. Choose Devices > Devices.
b. Click the Edit icon next to the name of the Service Engine that you want to delete. The Device home
page is displayed.
c. Click the Trash icon. You are prompted to confirm your decision.
d. Click OK to execute your request. The Service Engine is removed from the CDSM.
Note The Service Engine registration record needs to be deleted from the CDSM in order for the
Service Engine to complete reregistration after it comes back online. The CDSM will not
register a device if the device already appears in the record as registered.
Step 2 Power down the device and replace the failed or missing system disks with new, blank disks.
Step 3 After the new disks are installed, power up the device.
Step 4 From a console or through an SSH session, check the startup messages that appear on your screen.
If there is a problem with the system disk or the disk-based software, a message similar to the following
appears:
Jan 21 21:55:45 (none) ruby_disk:%SE-DISK-2-200024:First disk not in standard
configuration. Run 'disk recover-system-volumes' command and re-install software.
ruby_disk:Your first disk is not in standard configuration.
ruby_disk:Run 'disk recover-system-volumes' from the CLI
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System software is missing.