Dell DX6000 Installation And Configuration Manual - Page 14

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2.6.1. Backup Compatibility Across Software Versions

During upgrade, the backup process will not be able to complete and may log errors as a result.

After upgrade, previous backup sets may be marked on the Backup and Restore page of the CSN

Admin Console as being compatible with a previous software version. These backups cannot be

restored with the current version but will remain available if the software is reverted to a previous

version. Please reference the csn-reset section for instructions on how to install different versions of

the CSN using the csn-reset functionality.

The csn-reset script allows an administrator to reset a server to a state in which a fresh software

version may be installed from scratch and the initial configuration re-run. This can be useful to

restart upgrades that are interrupted by network outages or to revert to a previous software version.

The script can be run using the following command:

/opt/caringo/csn/bin/csn-reset

It will prompt for confirmation prior to proceeding and will log its steps to both the screen and to the

system syslog (/var/log/messages). During the csn-reset process, configuration backups will not be

able to complete and may log errors as a result. csn-reset allows one option, '--remove-cr', which will

optionally remove the DX Content Router data stores for both Publisher and Replicator. By default,

these data stores are not removed. Existing log files are never removed so they remain available for

troubleshooting.

The csn-reset script is not meant as a general purpose uninstall script as it does not return

service and network configuration files to their original state. It will not leave the server in a state

usable for other purposes; if a server needs to be repurposed as a non-CSN a fresh OS install is

recommended.

Version 2.0

December 2010