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Re: [Xen-users] NPIV + Multipath

----- Original Message -----
> From: "Errol Neal" <eneal@xxxxxxxxxxxxxxxxx>
> To: "Nick Couchman" <nick.couchman@xxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
> Sent: Monday, September 22, 2014 12:19:01 PM
> Subject: Re: [Xen-users] NPIV + Multipath
> On Mon, 09/22/2014 12:34 PM, Nick Couchman <nick.couchman@xxxxxxxxx>
> wrote:
> > Anyone had any success getting NPIV + Multipath running, or, I
> > suppose, multipath in general INSIDE a Linux-based domU?  I'm
> > using NPIV for several domUs, and would like to be able to pass
> > multiple SAN LUNs for the same volume through to the guest for
> > performance and redundancy.  Unfortunately it seems like the
> > process of passing the disk from dom0 to domU (whether NPIV or
> > phy, file, etc.) strips off the SCSI ID that Linux multipath
> > normally uses for determining identical disks.  I'm wondering if
> > there's a tweak for the Xen scripts that would leave this
> > information, or something inside Xen that's just as reliable that
> > could be used by multipath to determine multiple disk paths.  Or a
> > manual way inside multipath to specify which disks should be
> > matched up?
> > 
> Are you familiar with the Xen-San scripts?

Unless you're referring to the normal block scripts bundled with Xen, I guess 
not.  Can you point me in the direction of some documentation?


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