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