Can I save a domain with domain name "A" and IP address "10.0.0.1", and restore it in the future with name "B" and IP address "10.0.0.2"? assuming we can deploy any software in this domain to help this change. If this is doable, I think this might be helpful to duplicate several virtual machines without waiting for bootup every time. Can someone tell me whether that is possible? If so, how to do that? Thanks in advance! xin _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> Can I save a domain with domain name "A" and IP address "10.0.0.1", > and restore it in the future with name "B" and IP address "10.0.0.2"? > assuming we can deploy any software in this domain to help this > change.> Can someone tell me whether that is possible? If so, how to do that?Well, if you can put any software in the domain: write a small script that waits for a signal, and when it receives it, does an ifdown, ifconfigs the new IP address in, changes the interface''s MAC addresssets the hostname, and does an ifup. All you have to do is make sure that when you restore the domain you send it the magic signal through whatever channel you like. It would probably be easier and safer if the saved domain state had the network down, then you don''t have to worry about race conditions with two starting up at once and clashing for addresses. -- I went to the CO guess what he told me guess what he told me | apologies He said boy u better learn to like Win no matter what u do | to Prince But he''s a fool, ''cos nothing compares, nothing compares 2 GNU http://surreal.istic.org/ | A tidy desk is the product of an empty mind. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Thanks for your reply. But how about the domain name? Because I am trying to duplicate multiple domains from one saved image, the domain names might clash if they are not changed. I know the IP change is not big problem. So the major challenge to me is how to change the domain name. Any idea about this? Thanks, Xin On Tue, 16 Aug 2005, Daniel Hulme wrote:> > Can I save a domain with domain name "A" and IP address "10.0.0.1", > > and restore it in the future with name "B" and IP address "10.0.0.2"? > > assuming we can deploy any software in this domain to help this > > change. > > > Can someone tell me whether that is possible? If so, how to do that? > Well, if you can put any software in the domain: write a small script > that waits for a signal, and when it receives it, does an ifdown, > ifconfigs the new IP address in, changes the interface''s MAC addresssets > the hostname, and does an ifup. All you have to do is make sure that > when you restore the domain you send it the magic signal through > whatever channel you like. It would probably be easier and safer if the > saved domain state had the network down, then you don''t have to worry > about race conditions with two starting up at once and clashing for > addresses. > > -- > I went to the CO guess what he told me guess what he told me | apologies > He said boy u better learn to like Win no matter what u do | to Prince > But he''s a fool, ''cos nothing compares, nothing compares 2 GNU > http://surreal.istic.org/ | A tidy desk is the product of an empty mind. >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel