<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.apple-style-span
{mso-style-name:apple-style-span;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I meant use the kernel package with the –virtual suffix.
On Ubuntu 11.10, there’s one called linux-virtual which installs the
right thing for you. You’re right that you shouldn’t need to
do this on 11.10, because that’s a 3.0 kernel which should work on
anything. The –virtual kernel just has all the hardware drivers
missing, so you’ll save a bit of disk space. That’s all.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>On older versions of Ubuntu there are real differences between the
kernels. In that case it would be important to install the –virtual
version.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Ewan.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> jeffrey coho
[mailto:jeffreycohobupt@gmail.com] <br>
<b>Sent:</b> Wednesday, January 04, 2012 9:25 PM<br>
<b>To:</b> Ewan Mellor<br>
<b>Subject:</b> Re: [Openstack] [OpenStack] OpenStack with Xen<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>HI,Ewan,<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> Thanks a lot for that.But what do u mean by saying
"<strong><span style='font-family:"Calibri","sans-serif";color:#1F497D'>suffix
-virtual if you’re on Ubuntu"?</span></strong><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>I am running a HVM(Ubuntu 11.10) guest,i am wondering if i
still need anther Xen kernel<br>
because i find somebody else say that if i use recent kernel with pv_ops
enabled,then i shouldn't need <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>a different kernel.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Thanks <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>jeff<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <span class=apple-style-span><span style='font-size:
10.5pt;font-family:"Verdana","sans-serif";color:black;background:white'> </span></span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>2012/1/5 Ewan Mellor <<a
href="mailto:Ewan.Mellor@eu.citrix.com">Ewan.Mellor@eu.citrix.com</a>><o:p></o:p></p>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Yes, it needs to be a PV VM at the moment. It needs to
know the UUID of the VM that it lives in, which is why it’s looking in
/sys/hypervisor/uuid. We could add a flag to OpenStack to let you pass
this in, but there’s not really any point, because the performance with
the PV VM will be far superior to the HVM one anyway.</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>To convert it, you need to install a Xen kernel <strong><span
style='font-family:"Calibri","sans-serif"'>(suffix -virtual if you’re on
Ubuntu</span></strong>), and then switch it to PV mode using the XenServer CLI:</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>UUID=$(xe vm-list --minimal name-label='Whatever you called it')</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>xe vm-param-set uuid=$UUID HVM-boot-policy=""</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>xe vm-param-set uuid=$UUID PV-bootloader=pygrub</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Before you reboot, make sure that the grub config has been set
up correctly. It needs to refer to the new kernel, obviously. Also,
the device names are going to change across the reboot – your root disk
is going to stop being /dev/sda1 (or whatever) and turn into /dev/xvda1.
(An exception to this is on Ubuntu Maverick, which uses /dev/sdX in the PV
kernel too.) Most modern installations use disk labels rather than device
names these days, so you should be OK, but it’s worth checking.</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Also, there’s a bug in some versions of Pygrub such that
it will fail to boot if you have a submenu declaration in your grub.cfg.
If that’s the case (common on Ubuntu if you have upgraded your kernel at
any point) then you’ll need to remove the submenu declaration and its
matching close-brace.</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>After that, reboot, and it should come up in PV mode. If
it fails to come up, set HVM-boot-policy back to ‘BIOS order’ and
you can boot back into HVM mode and figure out what went wrong.</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers,</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Ewan.</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> jeffrey coho [mailto:<a
href="mailto:jeffreycohobupt@gmail.com" target="_blank">jeffreycohobupt@gmail.com</a>]
<br>
<b>Sent:</b> 04 January 2012 06:07<br>
<b>To:</b> Ewan Mellor<br>
<b>Cc:</b> <a href="mailto:openstack@lists.launchpad.net" target="_blank">openstack@lists.launchpad.net</a><br>
<b>Subject:</b> Re: [Openstack] [OpenStack] OpenStack with Xen</span><span
lang=EN-GB><o:p></o:p></span></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB> <o:p></o:p></span></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB>Hi, <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB> Does the nova-compute DomU need to be a PV guest?<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB>I have it now on a HVM guest,which it is causing the problem<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><strong><span
lang=EN-GB> Errno 2: No such file or directory: '/sys/hypervisor/uuid'.</span></strong><span
lang=EN-GB><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB>If so ,what should i do if i still want to use this HVM without
reinstalling<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB>everything again on a PV guest?Thanks.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB>Yours,<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB>Jeff<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB>2012/1/4 Ewan Mellor <<a href="mailto:Ewan.Mellor@eu.citrix.com"
target="_blank">Ewan.Mellor@eu.citrix.com</a>><o:p></o:p></span></p>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Is this what you’re looking for?</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="http://wiki.openstack.org/XenServerDevelopment"
target="_blank">http://wiki.openstack.org/XenServerDevelopment</a></span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers,</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Ewan.</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
openstack-bounces+ewan.mellor=<a href="mailto:citrix.com@lists.launchpad.net"
target="_blank">citrix.com@lists.launchpad.net</a> [mailto:<a
href="mailto:openstack-bounces%2Bewan.mellor" target="_blank">openstack-bounces+ewan.mellor</a>=<a
href="mailto:citrix.com@lists.launchpad.net" target="_blank">citrix.com@lists.launchpad.net</a>]
<b>On Behalf Of </b>Guilherme Birk<br>
<b>Sent:</b> 03 January 2012 09:06<br>
<b>To:</b> Openstack Mail List<br>
<b>Subject:</b> [Openstack] [OpenStack] OpenStack with Xen</span><span
lang=EN-GB><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB> <o:p></o:p></span></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>I've
already have a Nova configuration working with kvm. Now I want to install and
configure the Xen enviroment. Anyone can recomend any material or tutorial
where I can find how to install, configure and then integrate with OpenStack ?</span><span
lang=EN-GB><o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span
lang=EN-GB><br>
_______________________________________________<br>
Mailing list: <a href="https://launchpad.net/~openstack" target="_blank">https://launchpad.net/~openstack</a><br>
Post to : <a href="mailto:openstack@lists.launchpad.net"
target="_blank">openstack@lists.launchpad.net</a><br>
Unsubscribe : <a href="https://launchpad.net/~openstack" target="_blank">https://launchpad.net/~openstack</a><br>
More help : <a href="https://help.launchpad.net/ListHelp" target="_blank">https://help.launchpad.net/ListHelp</a><o:p></o:p></span></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB><br>
<br clear=all>
<br>
-- <br>
Sincerely yours, <o:p></o:p></span></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB>Jeff<o:p></o:p></span></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB> <o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal><br>
<br clear=all>
<br>
-- <br>
Sincerely yours, <o:p></o:p></p>
<div>
<p class=MsoNormal>Jeff<o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</div>
</body>
</html>