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

Jeff Garzik
2006-03-24T13:50:23Z

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