[Xen-devel] Re: [RFC PATCH 35/35] Add Xen virtual block device driver.

[Jeff Garzik <jeff@xxxxxxxxxx>]

Arjan van de Ven wrote:
> On Fri, 2006-03-24 at 08:37 -0500, Jeff Garzik wrote:
> > Jeff Garzik wrote:
> > > In fact, SCSI should make a few things easier, because the notion of 
> > > host+bus topology is already present, and notion of messaging is already 
> > > present, so you don't have to recreate that in a Xen block device 
> > > infrastructure.
> > Another benefit of SCSI:  when an IBM hypervisor in the Linux kernel 
> > switched to SCSI, that allowed them to replace several drivers (virt 
> > disk, virt cdrom, virt floppy?) with a single virt-SCSI driver.
> but there's a generic one for that: iSCSI
> so in theory you only need to provide a network driver then ;)
Talk about lots of overhead :)

OTOH, I bet that T10 is acting at high speed, right this second, to form 
a committee, and multiple sub-committees, to standardize SCSI 
transported over XenBus.  SXP anyone?  :)
        Jeff




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