Re: [Xen-users] Domain duplication

Quoting Benjamin Watine <watine@xxxxxxxx>:

> mpeters@xxxxxxxxxxxxxxx a écrit :
> > Quoting Benjamin Watine <watine@xxxxxxxx>:
> >
> >> Hi the list, first post here !
> >>
> >> I would like to duplicate v3.0.3 xen domain configured with file volume.
> >>
> >> So I configured a new VM using virt-install script. After installation
> >> process finished, I copy (duplicate) the file volume and the
> >> configuration file. I edit name, disk, mac address on vif on the config
> >> file, and quote uuid parameter.
> >>
> >> (First : how to deal with this uuid ? Removing it is OK ? Can I put the
> >> uuid I want ?)
> >>
> >> I run the new duplicated machine. All seems to be OK, but the network
> >> interface doesn't work anymore. Xen seems to have recreated a new
> >> interface (eth0), and have renamed the old in eth0.bak.
> >>
> >> I would like to know how to avoid that ; I would like that eth0 remains
> >> configured like it was before duplication.
> >>
> >> Maybe I don't use a good method for duplicating domains. If anyone have
> >> some documentation to do that.
> >>
> >> Thanks
> >>
> >> Ben
> >
> > If I understand correctly, this sounds like a similar problam to the one
> > encountered by Tomoki Taniguchi earlier today. Depending upon your Linux
> > Distro/version, look for an entry corresponding to eth0 in either
> /etc/iftab or
> > /etc/udev/rules.d/30-net_persistent_names.rules and delete it. Next, if the
> > config for the interface is stored in a file named as per the MAC address,
> eg
> > /etc/sysconfig/network/ifcg-eth-id-00:aa:aa:aa:aa:aa, you need to rename
> that
> > to
> > /etc/sysconfig/network/ifcg-eth-id-00:bb:bb:bb:bb:bb, where the new name
> matches
> > the new MAC address on the clone.
> >
> > The problem is that eth0's configuration is tied to the MAC address from
> the
> > machine you cloned, this MAC address doesn't exist on your copy. Removing
> the
> > lines from the above mentioned files and renaming the config file will
> enable
> > eth0 to be configured for the interface of your new DomU.
> >
>
> Thank you for your answer.
>
> Yes, the hardware adress of my interface is explicitely configured in
> the device file of my distro (RHEL5) :
> /etc/sysconfig/networking/device/ifcfg-eth0
>
> I will try to delete this line in my source disk to make it "non MAC
> dependant", or I'll correct it later in the duplicated machine.
>
> But, the way I use to duplicate machine is correct ? Nothing to say
> about this "simple" method ?

I currently use a similar method to duplicate domains. I've had no real problems
and am currently running upwards of 70 DomUs created this way.

--
Mike Peters
Web Site: http://www.ice2o.com


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