On 11/11/06, Chris Fanning <christopher.fanning@gmail.com>
wrote:>
> Hi,
>
> > I want to use live migration and as far as I know, for remote storage
I
> > can use GNBD, AoE, iSCSI and NFS among others. Which of these ones
works
> > best (or is easier to set up) with Xen?
> I''ve been told you need a block device, not a mount point.
>
> Chris.
>
> >
> > Is there any solution that can use my existing file images for domUs
or
> > do I have to install a domU on a partition of the remote storage
server?
> >
> > Thank you.
> > Cristian
> >
you can do gndb exported from one host to the other. however, you need
some> sort of locking, redhat''s cluster suite can take care of that...
dlm and
> lvm2 (cluster version)
>
> once you get clustered lvm setup, export one of your physical volumes to
> the other host via gndb. then you should see your clustered volumes present
> on both hosts. (the clustered volume being the domU''s filesystem)
>
> both hosts need to be on the same L2 subnet.. so not switch connected,
> rather a hub. Or you can do an ip-ip tunnel as well.
>
> however, once you get all this setup, it''s very unforgiving of
errors.
> plus, you''re always dependant on one host for storage... so,
there''s not a
> lot of point to it.
>
> The "correct" way would be SAN, but then there''s the
$$$$ issue.
>
> --Chad
>
>
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