Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

[Alexander Graf]

On 04.08.2010, at 19:19, Avi Kivity wrote:

> On 08/04/2010 08:01 PM, Paolo Bonzini wrote:
>> 
>> That's another story and I totally agree here, but not reusing /dev/sd* is 
>> not intrinsic in the design of virtio-blk (and one thing that Windows gets 
>> right; everything is SCSI, period).
>> 
> 
> I don't really get why everything must be SCSI.  Everything must support 
> read, write, a few other commands, and a large set of optional commands.  But 
> why map them all to SCSI?  What's the magic?

Hence the reference to megasas. It implements its own read/write/few other 
commands and the whole stack of optional commands as SCSI. I think virtio-blk 
should be the same.

SCSI simply because it's there, it's flexible and it's well defined. You get a 
working spec and a lot of working implementations.


Alex