Re: [Xen-users] Improve performance of domain U

["saptarshi naha" <naha80@xxxxxxxxx>]

Thnaks Steffen,

I am going to give that a try.

Also have anyone done HA on xen?

> > Now the question is with swap being on the LVM(/dev/sda2),
> > will there be any problem with my migration using GNBD? I am
> > running my GNBD on the domain 0 and export the drives and
> > then import on the other server.
>
> Correct. You will not be able to live-migrate such a domain.
> That's why I wrote:
>
> > If you need to make sure, you can live-swap you domU to another host, you
> need to do that [use GNBD].
>
> But I suggest having swap on lvm/sda anyway and if you NEED to migrate,
> temporary move "swapon" another swap partition (on GNBD), and "swapoff" the
> (lvm/sda). After migration "swap back".
>
> Swap on network-backed devices is inherently slow and you should not use
> that on systems that need to be performant.

Regards,
Naha

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