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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?

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