Re: [Xen-users] xen, iscsi and resilience to short network outages

["Steve Feehan" <sfeehan@xxxxxxxxx>]

On 11/13/06, Tom Brown <tbrown@xxxxxxxxxxxxx> wrote:

> pushing the iscsi to dom0 means you're abstracting the disk and the domU
> can not know about iscsi timeouts, retries etc.
>
> pushing the iscsi to domU means you can do live migration, and your dom0
> is much simpler and should be more stable.
Live migration works in the iscsi in domU case also. You just have to be
very careful to limit access to the LUN and use a consisten device
name (ie. the ones provided by udev in /dev/disk/*).

> I've never used iscsi, so I can't really comment about retries, recoveries
> etc... but if the dom0 can recover, I would think that the domU could _if_
> it knew it was handling iSCSI, but that's just a guess.
Well, I'm convinced it's worth a try. When I can spare some time to
experiment I'll try both the root on NFS and iscsi in domU
configurations and report back to the list with my results.

Thanks,

--
Steve Feehan

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