[Linux-cluster] XEN VM Cluster

[Marcos Ferreira da Silva]

Thanks for the docs.

In the VMClusterCookbook I don't understand where is the directory /guests.
Is a shared partition in a storage?
How could I configure this shared partition to be access for both machines?

Have I use a "disk in a file" like the doc? 
Or could I use a real partition in a shared storage (partitioon with no filesystem only created by lvm)?

------------------------------
Marcos Ferreira da Silva
Digital Tecnologia
Uberlandia-MG
(34) 9154-0150 / 3226-2534

-------- Mensagem Original --------
> De: Ray Charles <raycharles_man at yahoo.com>
> Enviado: quarta-feira, 6 de fevereiro de 2008 1:56
> Para: marcos at digitaltecnologia.info, linux clustering <linux-cluster at redhat.com>
> Assunto: Re: [Linux-cluster] XEN VM Cluster
> 
> Hi Marcos,
> 
> Here are 2 links I found usefull when doing what
> you're trying. 
> 
> http://www.linux.com/articles/55773
> 
> http://sources.redhat.com/cluster/wiki/VMClusterCookbook
> 
> I would also say be sure to give some attenttion to
> the multicast messages between the hosts, make sure
> that multicast is passing throught the switch. Seemed
> to be a gotcha for me, and there's docs on that part
> floating around.
> 
> -Ray
> 
> 
> 
> --- Marcos Ferreira da Silva
> <marcos at digitaltecnologia.info> wrote:
> 
> > I'm trying to do a two node cluster.
> > I want start a virtual machine at vserver1 and
> > reallocate it to vserver2 if node 1 stop.
> > The VM is installed in a shared HP storage.
> > This access is made with two Emulex Corporation
> > Zephyr-X LightPulse Fibre Channel Host Adapter.
> > If I start it manually which xm create its ok in
> > both servers.
> > The partition is a LVM in /dev/VG2/LV01.
> > I install virtual machine directly in this
> > partition.
> > The names vserver1 e vserv2 are in the /etc/hosts.
> > The cluster start but vserver2 join and after appear
> > "Member Left".
> > 
> > I think that my problem is in fence device.
> > I don't have any equipament.
> > I have only the servers, storage, NICs and Emulex.
> > 
> > I didn't find any manual for this situation.
> > 
> >  
> >      +--- SWITCH ---+
> >      |              |
> >      |              |  
> > +----------+     +----------+
> > | XEN      |     | XEN      |
> > |   maq1   |     |          |
> > |          |     |          |
> > | vserver1 |     | vserver2 |
> > +----------+     +----------+
> >      |              |
> >      |              |
> >     +----------------+
> >     |  HP Storage    |
> >     +----------------+
> > 
> > 
> > 
> > My cluster.conf is: 
> > 
> > <?xml version="1.0"?>
> > <cluster alias="cluster1" config_version="13"
> > name="cluster1">
> >         <fence_daemon clean_start="0"
> > post_fail_delay="0" post_join_delay="3"/>
> >         <fence_xvmd family="ipv4"
> > key_file="/etc/cluster/fence_xvm.key"/>
> >         <clusternodes>
> >                 <clusternode
> > name="vserver1.teste.br" nodeid="1" votes="1">
> >                         <fence>
> >                                 <method name="1">
> >                                         <device
> > domain="teste.br" name="maq1"/>
> >                                 </method>
> >                         </fence>
> >                 </clusternode>
> >                 <clusternode
> > name="vserver2.teste.br" nodeid="2" votes="1">
> >                         <fence/>
> >                 </clusternode>
> >         </clusternodes>
> >         <cman expected_votes="1" two_node="1"/>
> >         <fencedevices>
> >                 <fencedevice agent="fence_xvm"
> > name="maq1" auth="none"/>
> >         </fencedevices>
> >         <rm>
> >                 <failoverdomains>
> >                         <failoverdomain
> > name="fodMaq1" ordered="1" restricted="1">
> >                                 <failoverdomainnode
> > name="vserver1.teste.br" priority="1"/>
> >                                 <failoverdomainnode
> > name="vserver2.teste.br" priority="2"/>
> >                         </failoverdomain>
> >                 </failoverdomains>
> >                 <resources/>
> >                 <vm autostart="1" domain="fodMaq1"
> > exclusive="0" name="maq1" path="/etc/xen"
> > recovery="relocate"/>
> >         </rm>
> > </cluster>
> > 
> > 
> > ------------------------------
> > Marcos Ferreira da Silva
> > Digital Tecnologia
> > Uberlandia-MG
> > (34) 9154-0150 / 3226-2534
> > 
> > 
> > 
> > --
> > Linux-cluster mailing list
> > Linux-cluster at redhat.com
> >
> https://www.redhat.com/mailman/listinfo/linux-cluster
> > 
> 
> 
> 
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