Differences

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--- virtualbox [2010/10/12 23:09] – aorth
+++ virtualbox [2011/06/03 12:51] – [Optimal settings for a guest] aorth
@@ Line 1: / Line 1: @@
 ====== VirtualBox ======
-VirtualBox is a free/opensource Hypervisor from Sun Microsystems.  It has performance on par with VMware and is very mature.  We have two virtualization servers, [[biovbox]] and biovboxtesting.
+VirtualBox is a free, open-source hypervisor from Oracle.  It has performance on par with VMware and is very mature.  We have two virtualization servers which run VirtualBox on top of CentOS, [[biovbox]] and biovboxtest.
   * [[http://www.virtualbox.org|VirtualBox homepage]]
@@ Line 6: / Line 6: @@
 ====== Create a VM ======
 Copy an ISO to your home directory:
-<code>$scp ubuntu-9.04-desktop-i386.iso alan@172.26.0.200:~/</code>
+<code>$ scp ubuntu-9.04-desktop-i386.iso alan@172.26.0.200:~/</code>
   * SSH to VM server: 172.26.0.200
 <code>$ ssh alan@172.26.0.200</code>
@@ Line 48: / Line 48: @@
 As the user who owns the VM, save the VM's state:
-# su - jmagochi
+<code># su - jmagochi
 $ VBoxManage controlvm nobu savestate
-Oracle VM VirtualBox Command Line Management Interface Version 3.2.8
-(C) 2005-2010 Oracle Corporation
-All rights reserved.
-%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
 $ VBoxManage controlvm lims savestate
-Oracle VM VirtualBox Command Line Management Interface Version 3.2.8
-(C) 2005-2010 Oracle Corporation
-All rights reserved.
-%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
 $ exit
 # su - aorth
 $ VBoxManage controlvm b0237553-9653-4461-bd0e-d4d316c16d4f savestate
-Oracle VM VirtualBox Command Line Management Interface Version 3.2.8
-(C) 2005-2010 Oracle Corporation
-All rights reserved.
-%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
 $ exit</code>
+===== Update VirtualBox =====
+==== CentOS ====
+<code># yum update VirtualBox-3.2</code>
+===== Resume VMs =====
+<code># su - jmagochi
+$ VBoxHeadless -s nobu &
+$ VBoxHeadless -s lims &
+$ exit
+# su - aorth
+$ VBoxHeadless -s b0237553-9653-4461-bd0e-d4d316c16d4f -v off &</code>
+===== Mount a CD to a running VM =====
+Attach an ISO to a running VM.  The CD/DVD device is on the Secondary IDE controller (--port 1), and it is the slave device (--device 1).
+<code>VBoxManage storageattach "Debian 504" --storagectl "IDE Controller" --port 1 --device 1 --type dvddrive --medium /usr/share/virtualbox/VBoxGuestAdditions.iso</code>
+====== Optimal settings for a guest ======
+  * Notes about ''divider=10'': [[http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006427|VMware]], [[http://www.arrfab.net/blog/?p=62|Blog article]]
+  * Set the IO scheduler to ''noop'':
+    * Edit the grub command line to set the default IO scheduler, usually in ///etc/default/grub//: ''elevator=noop''
+  * Install guest additions (VirtualBox or VMware)
+  * Run a virtual machine-specific kernel:
+    * Ubuntu: linux-image-virtual
+  * Mount filesystems with ''noatime'' in ///etc/fstab//