On Fri, Nov 25, 2011 at 06:42:42PM +0800, Osier Yang wrote:
On 2011年11月25日 18:28, Daniel P. Berrange wrote:
>On Fri, Nov 25, 2011 at 04:55:02PM +0800, Osier Yang wrote:
>
>>
>><quote>
>>AFAIU libvirt needs a way to:
>>
>>- Associate a virtual adapter WWN with a VM (in the VM xml)
>>- Learn to start a virtual adapter when the VM is started, and destroy the
>> adapter when the VM is stopped.
>>- Possibly a way to associate a WWN with a scsi pool, to start / stop a
>> virtual adapter with the pool.
>></quote>
>>
>>But afer thinking more, I'd think it might be not good idea:
>>
>>As far as I could understand, the requirement of the BZ wants
>>a way to create/migrate a guest with NPIV. I'm goint to talk
>>create first,and migration then.
>
>The desire to assocaite WWNN/WWPN with a VM is just one part of a more
>general need to expand libvirt's SCSI support. Paulo started a design
>thread on the subject a month or so back which sort of converged into
>agreement:
>
>https://www.redhat.com/archives/libvir-list/2011-October/msg01253.html
>
Yes, I read this thread before, but it looks to me Paolo was talking
about LUN, scsi host, and vHBA passthrough. It's a bit different
with what I'm trying to resolve (There is no passthrough here, but
about how to design a good workflow between virt-manager / Boxes
and libvirt for using (creating and migration ) a FC LUN as a normal
disk). The useful thing in the discussion of the thread may be
define the (v)HBA as a controller though.
Or I misunderstood something?
I've found that when people generally talk about associating iSCSI LUNs
with a guest, they have always been expecting SCSI LUN passthrough, or
passthrough of the entire iSCSI vHBA.
If we're considering a non-passthrough use case, then IMHO the problem
should be generalized to
How do we associated a storage volume with a VM ?
ie not something that is specific to (i)SCSI.
Regards,
Daniel
--
|:
http://berrange.com -o-
http://www.flickr.com/photos/dberrange/ :|
|:
http://libvirt.org -o-
http://virt-manager.org :|
|:
http://autobuild.org -o-
http://search.cpan.org/~danberr/ :|
|:
http://entangle-photo.org -o-
http://live.gnome.org/gtk-vnc :|