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Re: [libvirt] [PATCH 0/1] Merge DanPB's SCSI HBA pool code



Guido Günther wrote:
On Fri, Feb 20, 2009 at 05:14:54PM -0500, David Allan wrote:
This patch contains the implementation Daniel Berrange did of storage
pools using SCSI HBAs.  I have updated it for the current tree in
preparation for implementing NPIV support.  Let me know what you
think.
This looks like a great addition but I wonder if it is of any real use
without supporting multipath? On SANs issuing I/O to some paths might
cause severe performance penalties or the LUN might be visible but I/O
is rejected until an explicit switch over command is sent. This would be
handled transparently if multipath would be used on top.
Any plans to add this? (Otherwise I might give this a try once I'll find
some more free time to spend on libvirt again).

Funny you should mention multipath, that's what I'm working on at the moment. :) The host code will also provide a basis for NPIV support.

Dave


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