The Virtualization Cookbook for SLES 10 SP2 - z/VM - IBM

This allows the cloner to initiate an encrypted SSH connection to the Linux server without the
need to type the root password.
8.2.8 Changing the order of the swap disks
It is likely that the order of swap space priority is not optimal. Perform the following
commands:
► View your order with the swapon -s command:
# swapon -s
Filename Type Size Used Priority
/dev/dasda2 partition 524296 0 -1
/dev/dasdb1 partition 262132 0 -2
/dev/dasdc1 partition 524276 0 -3
This shows that the minidisk swap space will be used before the VDISK. As VDISKs are
in-memory, they should be first in the priority, from smallest to largest.
► Make a backup of the /etc/fstab file:
# cd /etc
# cp fstab fstab.orig
► Modify the order by moving the line in /etc/fstab. with the minidisk swap space below
the lines with VDISK swap spaces:
# vi fstab
...
/dev/disk/by-path/ccw-0.0.0300-part1 swap swap defaults 0 0
/dev/disk/by-path/ccw-0.0.0301-part1 swap swap defaults 0 0
/dev/disk/by-path/ccw-0.0.0100-part2 swap swap defaults 0 0
...
After a reboot, the minidisk swap space should come back with the lowest priority.
8.2.9 Other configuration changes
You may consider other configuration changes. Of course you can take an iterative approach:
start with this set of changes, clone some Linux images and test, then bring the golden image
back up, make more changes and re-clone.
Whether you’re on the first pass of configuration or not, refer to the following sections to
consider other changes for performance and availability related issues:
► 12.1, “Registering your system with RHN” on page 187
► 13.6, “Setting up Memory Hotplugging” on page 208
► 13.8, “Hardware cryptographic support for OpenSSH” on page 213
8.2.10 Rebooting the system
Now reboot to test your changes:
# reboot
Broadcast message from root (pts/0) (Sun Nov 19 08:57:32 2006):
The system is going down for reboot NOW!
142 The Virtualization Cookbook for RHEL 6