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Re: [Xen-users] best practices in using shared storage for XENVirtualMachines and auto-failover?

  • To: Freddie Cash <fjwcash@xxxxxxxxx>
  • From: Rudi Ahlers <Rudi@xxxxxxxxxxx>
  • Date: Fri, 15 Oct 2010 09:39:37 +0200
  • Cc: xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Fri, 15 Oct 2010 00:41:18 -0700
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On Thu, Oct 14, 2010 at 5:37 PM, Freddie Cash <fjwcash@xxxxxxxxx> wrote:
> Trying to get this straight in my head.  :)
> Would you run the iSCSI initiator in the host and attach the block
> device to the guest?
> Or would you run the iSCSI initiator in the guest?
> How does the migration from one host machine to another work with iSCSI?
> --
> Freddie Cash
> fjwcash@xxxxxxxxx
> _______________________________________________

This is actually what I want to know as well.

I know the different technologies (AOE / iSCSI / NFS / etc) all have
different pro's & cons, but how do I actually use them optimally?

AOE seems to have less network overhead since it runs on the network
layer and not on TCP or IP, so this is probably a good option to go
for. I'm thinking of setting up a few NAS servers with CentOS + CLVM,
or maybe even a few NAS servers with Gluster and then export the file
systems from them to the XEN servers.

But, do I export it to the dom0, or the domU's directly? That I don't know.

Kind Regards
Rudi Ahlers

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