Re: [Xen-users] Swap space for DomU

[XenoCrateS <shriram@xxxxxxxxxxx>]

but what if the data disk is accessed via AoE mounts (semi equivalent to 
NFS mounts) and the swap disk is in the host machine itself?
since in this case, the data disk is considered as an "in host" disk, is 
it possible to avoid the migration of data disk, and make the xm live 
migrate remount the appropriate AoE block in the transferred machine?
x

Mark Williamson wrote:
> On Friday 28 December 2007, Jan Albrecht wrote:
>   
> > > What happens with swap space during a live move if I use a file per
> > > DomU.  Does the move script copy the swap file over as well?
> > >       
> > Live move should copy all data disks, which inculdes swap.
> >
> >     
> Nico Kadel-Garcia <nkadel@xxxxxxxxx> Wrote:
>   
> > If you do a live migration, it does indeed move the state. I like to use 
> > a separate swap partition oon DomU to ease bare metal restorations and 
> > off-line operations on DomU's files. 
> >     
> The xm migrate command on its own doesn't copy virtual disks, so neither swap 
> nor data will automatically get migrated with the machine.  I think it's 
> possible to configure disk migration using the external device migration 
> scripts, but AFAIK it's not enabled by default - am I wrong here?
> However, the domain's configuration data is sent along with its memory state 
> when the migration occurs, so if you configure appropriate network-accessible 
> storage for swap and data VBDs then they can be transparently available at 
> the destination machine without the guest knowing what's just happened to it.
> Cheers,
> Mark
>
>   
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