Differences

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--- hypervisor:base:xen [2014/04/02 02:37]
admin [Configure Networking]
+++ hypervisor:base:xen [2014/04/03 02:07] (current)
admin Links adapted because of a move operation
@@ Line 1: / Line 1: @@
 ====== Xen ======
+<WRAP center round important 60%>
+In case you want to install the full XCP-XAPI toolstack, don't go any further and read the [[xcp-xapi|XCP-XAPI]] section.
+</WRAP>
 [[https://wiki.debian.org/Xen]]
@@ Line 29: / Line 33: @@
 Please refer to the [[:hypervisor:base:network|Network configuration]] section.
+===== Reliable Setup =====
-===== Configure Domain 0 Memory =====
+To avoid random, unexplained performance issues and failures in a XEN virtualization environment the following configuration items should always be checked;  Correspondingly, before troubleshooting ANY XEN Host or VM issue verify the XEN Host configuration as follows:
+  * "Lock down" the amount of memory assigned to dom0.
+  * Set the amount of memory Dom0 is given at boot time
+  * Disable ballooning
+  * Do not restrict dom0 to a single VCPU
+  * Only use Logical Volume Manager (LVM) on Dom0 or DomU, but not both
+More (for SUSE): [[http://www.novell.com/support/kb/doc.php?id=3559698]]
+==== Configure Dom0 Memory ====
 On a system which is dedicated to running Xen guests it is better to instead give dom0 some static amount of RAM and to disable ballooning, here 1024MB.
@@ Line 63: / Line 77: @@
 At this point you should **reboot** so that these changes take effect.
+=== Ensure that Xen is running ===
+<code>
+> cat /proc/xen/capabilities
+</code>
+Should display “control_d”
 ===== Configure guest behaviour on host reboot =====