<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>I'm dealing with an old Xen 3 server, and badly need to update it and all the vm's on it to more contemporary operating systems. So far, so good!</div><div><br></div><div>Can the Xen server on CentOS 5 para-virtualized CentOS 6? And if not, I'm having real trouble getting a live cd or installation media to boot in full virtualization to do the update of the guests.</div><div><br></div><div>I'd normally start by updating the Xen server first, but that's not workable right now.<br><br>Nico Kadel-Garcia<div>Email: n<span style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469);"><a href="mailto:kadel@gmail.com">kadel@gmail.com</a></span><div>Sent from iPhone</div></div></div><div><br>On Feb 18, 2015, at 11:59, SilverTip257 <<a href="mailto:silvertip257@gmail.com">silvertip257@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr">On Wed, Feb 18, 2015 at 3:10 AM, C. L. Martinez <span dir="ltr"><<a href="mailto:carlopmart@gmail.com" target="_blank">carlopmart@gmail.com</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">On Tue, Feb 17, 2015 at 1:43 PM, Sven Kieske <<a href="mailto:s.kieske@mittwald.de">s.kieske@mittwald.de</a>> wrote:<br>
><br>
><br>
> On 17/02/15 09:18, C. L. Martinez wrote:<br>
>> Hi all,<br>
>><br>
>> How can I stop/disable a nic in a virtual guest using a virsh<br>
>> command?? I am searching the same effect like if I unplug network<br>
>> cable ... Is it possible?? I have tried with "detach-interface"<br>
>> command without luck. I don't want to remove the nic from guest<br>
>> configuration, only to stop the nic ...<br>
><br>
> Depending on your network architecture you could just ifdown<br>
> the vmnet, but this just works if you don't have multiple<br>
> vms on one vmnet (which you shouldn't).<br>
><br>
> HTH<br>
><br>
> --<br>
<br>
Ok, to do a ifdown of virtual bridge it seems the only option.<br>
<br>
Many thanks to all for your answers.<br>
</blockquote></div><div class="gmail_extra"><br></div><div class="gmail_extra" style="">* Definitely look to Juerg Haefliger's solution. It's exactly what you want since you requested a method that can be done from the virsh interface. Thanks Juerg!</div><br>1) down the vnetX interface from the host node<br></div><div class="gmail_extra" style=""> ip link show dev vnetX</div><div class="gmail_extra" style=""> ip link set down vnetX</div><div class="gmail_extra" style=""> ip link show dev vnetX<br></div><div class="gmail_extra"><br></div><div class="gmail_extra">And if using bridged networking, you have one more option.<br></div><div class="gmail_extra">2) remove the vnetX interface from the bridge</div><div class="gmail_extra"> brctl delif <bridge_int> vnetX</div><div class="gmail_extra"><br></div><div class="gmail_extra">Certainly downing the interface using either Juerg's solution via virsh or mine via iproute2 tools is most ideal since it's easier/simpler to reinstate. You can use ifconfig if you prefer it over ip tools, but enjoy those tools and syntax while it remains! [0] ;-)</div><div class="gmail_extra"><br></div><div class="gmail_extra">[0] <a href="https://dougvitale.wordpress.com/2011/12/21/deprecated-linux-networking-commands-and-their-replacements/">https://dougvitale.wordpress.com/2011/12/21/deprecated-linux-networking-commands-and-their-replacements/</a><br clear="all"><div><br></div>-- <br><div class="gmail_signature">---~~.~~---<br>Mike<br>// SilverTip257 //</div>
</div></div>
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