For saving installations and releases as well as to clone images to the cluster, backups to the image server have to be made. Therefore the backup and rbackup scripts are provided. They perform a backup of the raw device and gzip the data with the following command:
dd if=/dev/device bs=1024 |gzip -c |dd of=ipath/iname bs=1024
The file names are constructed as follows:
A comment has to be provided for each image that is generated. This will be stored in the image description log which can be displayed with the imagedesc command.
backup sda5 WinNTEduc yourname "WindowsNT 4.0 SP4" rbackup sda5 WinNTEduc clientname yourname "WindowsNT 4.0 SP4"
This backs up the device sda5 to the imageserver. The image name will be sda5_WinNTEduc.gz and the comment in the image description database ``WindowsNT 4.0 SP4''. Note that the double quotes (``'') are important! The rbackup script can be used to back up a remote machine. The only difference to backup is the parameter clientname which has to be provided.