system/xen: Added (the Xen virtualization hypervisor)

Signed-off-by: Robby Workman <rworkman@slackbuilds.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/system/xen/domU/README.domU b/system/xen/domU/README.domU
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+		HOW TO INSTALL A SLACKWARE domU XEN GUEST
+
+After the ordeal of installing and configuring LILO/GRUB, Xen, kernel-xen and
+initrd, editing rc.local and rc.local_shutdown and finally booting on your
+Slackware XenLinux, you might be wondering how are you to load you guest OS.
+If you look around, you might find Xen domU (unprivileged) guest that you can
+download from the Internet, but some of us might want to roll their own. This
+MINI-HOWTO shows how to install a Slackware domU guest. The fastest way is to
+mount your Slackware DVD on /media/SlackDVD, normally this is the mount point
+chosen by HAL.
+Then run the included domU.sh script:
+
+# ./domU.sh
+
+This will install Slackware onto an 8GB file called slackware.img and a 500MB 
+swap file called swap_file. By default, a typical server installation ensues.
+
+Have a good look at the "mydom" file as you need to fill in the full path to
+the slackware.img and swap_file files.
+
+Then run the following command:
+
+# xl create -c mydom
+
+Your Slackware XenLinux domU should boot instantly.
+
+Since Xen domU support has been in mainline kernel for a while now, those that
+wish to have the best performance can compile a seperate domU kernel based on a
+stock Slackware kernel config.
+This is what you have to select/unselect when building domU only kernel:
+
+---
+Processor type and features  --->
+  [*] Paravirtualized guest support  --->
+    [*]   Xen guest support
+
+Bus options (PCI etc.)  --->
+  [ ] PCI support
+
+Device Drivers  --->
+  < > Serial ATA and Parallel ATA drivers  --->
+  SCSI device support  --->
+    < > SCSI device support
+---
+
+Disabling SCSI support frees up the /dev/sd* device names for use as Xen
+virtual block devices. Basicly, this changes their names from /dev/sd* to a
+Xen device name format /dev/xvd*. If this is left enabled, ocasionaly domU can
+get stuck with this error: "XENBUS: Waiting for devices to initialise..."
+Naturaly, to get the best performance you can disable everything that you
+don't need in a domU kernel.
+
+Note that these files are not intended for a production environment. Users who
+have particular requirements will need to set up their own methods, but these
+files might provide a good starting point. Refer to the Xen manual and 
+http://xen.org for more details and options.