[CentOS] Success moving Xen LVMs from 32 to 64bit host

Kwan Lowe kwan.lowe at gmail.com
Tue Mar 2 15:20:12 UTC 2010

Thanks Henry...

On Tue, Mar 2, 2010 at 2:10 AM, henry ritzlmayr <centos at rc0.at> wrote:
>> Next, we copied the /etc/xen/xm_c32_001 configuration file to the
>> replacement server.  We generated a new UUID using the "uuidgen"
>> utility. We also created a new MAC address.  Finally, we started the
>> instance:
> Since you moved your virtual machine, you wouldn´t have to create a new
> UUID and no new MAC address. This is only required if you copy a virtual
> machine and if you want both up at the same time.

Yes.. It's possible that we may have multiple copies of these
systems..   Also, I un
>> xm create xm_c32_001
>> Everything came up, but no network.  From the root console we logged
>> in then edited the /etc/sysconfig/network-scripts/ifcfg-eth0.  Xen had
>> apparently renamed the script and put in a DHCP configuration. We just
>> renamed the backup file and commented out the MAC address line and
>> restarted networking, *and* ifdown eth0 then ifup eth0.
> This is because you changed the MAC address. If you would have left it
> at the original value, the network would have started right away with
> the old config.


Yes.. My error caused by re-using a script that autogenerated the
config file. I had been playing with VMWare Lab Manager recently and
was looking to emulate the template functionality in Xen.

More information about the CentOS mailing list