THANKS for responding, I have had my head spinning lately, so this one sorta 
slipped away... let me respond within (vastly snipped)
 
> ##xen is pretty linux specific.. You better off
> asking Solaris
> dom0 questions on #solaris-xen on oftc.net. 

Thanks, I have joined there. I probably just missed where that was listed ;)



----- 
> No, Solaris uses a different blktap implementation
> based
> on the VirtualBox disk code.  (tap:vdisk vs tap:aio)
> The VirtualBox code has much better support for vmdk,
> vhd, and
> vdi files.. vdiskadm also provides zfs like snapshot,
> rollback,
> etc functionality for file based disks.  You can also
> use it to
> move between block, and file based disks.
> 
> You can also move a file from VirtualBox or VMWare
> and use it on
> Solaris on Xen (assuming the OS is somewhat flexible
> with the H/W
> emulation used).
> 
> tap:vdisk works fine over NFS..  Remember that
> everything has
> to be read/writeable by user xvm. We do need to
> improve the
> performance some more though.

Is the WIKI still correct that tap:vdisk with VMDK format is the "best 
peforming" (and most compatible)?


> 
> Although, if your looking towards a production'ish
> environment,
> I would suggest using iscsi.  We also have some
> modifications
> which makes it possible to easily migrated a guest on
> an iscsi
> disk.
> 
>     phy:iscsi:/alias/<lun>/<iscsi-alias>
> phy:iscsi:/static/<server IP>/<lun>/<target id>
>     phy:iscsi:/discover/<lun>/<alias or target id>

We will look at iscsi, but past experience has not been real good with it. Our 
NAS backend is a 7410c, which does appear to support iscsi, so its something we 
can certainly look at trying again. I am looking for something that is network 
based for (live) migration compatibility.


> .
> 
> virt-install -p -n nevada -l /export/snv108.iso
>  --nographics \
>      --noautoconsole -r 1024 \
> --disk
>  path=/static/192.168.0.70/0/iqn.1986-03.com.sun:02:d5
> b1c26-0a7a-c6b4-98f8-d6d267eb2561,driver=phy,subdriver
> =iscsi

Wow, thats nearly as obnoxious looking as FC WWNs ;)


> 
> virsh attach-disk nevada
>  /static/10.6.70.64/0/iqn.1986-03.com.sun:02:01accb27-
> 5a3-e45f-882d-dc4e48c5685d xvdb --driver phy
> --subdriver iscsi

Thanks.

> 
> 
> > 
> > *** Next question: How do I find out what "drivers"
> are supported
> >  for disks for example. There are a couple
>  examples on the wiki,
> > but I didn't see anything in the man pages, I
> didn't see any help
> > or list option to tell me what it would support.
>  It seems like
> > there should be a list somewhere that lists
> driver/subdriver and
> > maybe some description. At the very least maybe
>  there is a way to
> > list a library directory or something?
> 
> For file based disks, you should use tap:vdisk.

OK, but that still doesn't explain the most basic question of how to get the 
list of drivers, sub drivers and how to use them... maybe a wiki page 
suggestion? :)


(snipped virt-manager stuff, thanks)

> > *** Next question: does XEN on OS support virtual
> fiber channel?
> 
> If you mean npiv, then yes... You can see the hotplug
> script
>    /usr/lib/xen/scripts/vbd-npiv
> r some details..  I don't have any H/W which supports
> it
> so I don't know that much about it.
> 


Yes, I have been going round and round with NPIV. That is a whole separate 
thread :) see bug id # 6900002 :)


~tommy
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