[Xen-users] Re: 100% safe way to backup domU: (was Yet another backup)

[Ligesh <myself@xxxxxxxxxx>]

On Thu, Jan 11, 2007 at 07:54:32PM +0000, Mark Williamson wrote:
> 
> 
> I suspect the cleanest solution could be guest checkpointing...  I expect 
> this 
> will be implemented at some point in the future.  The goal would be to save 
> the guest's state to disk (as if the guest were being suspended) *and* 
> snapshot the filesystem, then let the in-memory copy of the guest continue to 
> run.

 I forgot about the 'save' feature. If we have a consistent file system that 
can be mounted and backed up, and if we add the ram separately, the we have the 
entire state of the system. So I think the actual steps would be.

 xm sync-and-save domU file
 take lvm snapshot
 xm restore file
 backup snapshot + file


  Backing up the all the domUs live from the dom0 is an extremely important 
feature. In the hosting industry, taking down the server for getting a task 
done is not an idea that people can even understand, let alone accept.


 Thanks.




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