On 04/18/2011 04:05 PM, Hannes Reinecke wrote:
My proposal would be to implement a full virtio-scsi _host_, and extend
the proposal to be able to handle the transport layer too.
Yes, I have added this independently from Friday to today, and it is why
I haven't sent the proposal yet.
At the
On Mon, Apr 18, 2011 at 3:05 PM, Hannes Reinecke wrote:
> On 04/15/2011 10:56 PM, Paolo Bonzini wrote:
>>
>> On 04/15/2011 05:04 PM, Stefan Hajnoczi wrote:
>>>
>>> The way I approached virtio-scsi was to look at the SCSI Architecture
>>> Model document and some of the Linux SCSI code. I'm not sure
On 04/15/2011 10:56 PM, Paolo Bonzini wrote:
On 04/15/2011 05:04 PM, Stefan Hajnoczi wrote:
The way I approached virtio-scsi was to look at the SCSI Architecture
Model document and some of the Linux SCSI code. I'm not sure if
letting virtio-blk SCSI pass-through or scsi-generic guide us is a
goo
On 04/15/2011 05:04 PM, Stefan Hajnoczi wrote:
The way I approached virtio-scsi was to look at the SCSI Architecture
Model document and some of the Linux SCSI code. I'm not sure if
letting virtio-blk SCSI pass-through or scsi-generic guide us is a
good approach.
How do your ioprio and barrier r
On Fri, Apr 15, 2011 at 3:37 PM, Paolo Bonzini wrote:
> On 04/15/2011 04:28 PM, Stefan Hajnoczi wrote:
>> Nothing formal. I'm trying to learn SCSI as I go along:
>>
>> http://git.kernel.org/?p=linux/kernel/git/nab/lio-core-2.6.git;a=blob;f=include/linux/virtio_scsi.h;hb=refs/heads/tcm_vhost
>>
>>
> Why vmw_pvscsi?
Because all I wanted to do was to learn qemu's SCSI, and vmw_pvscsi is
pretty much the simplest device I could pick... It's just an exercise,
but since it works I thought I'd post it.
> Good luck. Paul Brook absolutely insists on having them, but they kill
> performance for any
On 04/15/2011 04:17 PM, Paolo Bonzini wrote:
> On 04/15/2011 04:01 PM, Stefan Hajnoczi wrote:
>> I think SCSI brings many benefits. Guests can deal with it better
>> than these alien vdX virtio-blk devices, which makes migration easier.
>> It becomes possible to attach many disks without burning t
On 04/15/2011 04:28 PM, Stefan Hajnoczi wrote:
> Nothing formal. I'm trying to learn SCSI as I go along:
>
> http://git.kernel.org/?p=linux/kernel/git/nab/lio-core-2.6.git;a=blob;f=include/linux/virtio_scsi.h;hb=refs/heads/tcm_vhost
>
> That's the interface I'm using. Requests are:
>
> [Header
On Fri, Apr 15, 2011 at 3:17 PM, Paolo Bonzini wrote:
> On 04/15/2011 04:01 PM, Stefan Hajnoczi wrote:
>>
>> I think SCSI brings many benefits. Guests can deal with it better
>> than these alien vdX virtio-blk devices, which makes migration easier.
>> It becomes possible to attach many disks with
On 04/15/2011 04:01 PM, Stefan Hajnoczi wrote:
I think SCSI brings many benefits. Guests can deal with it better
than these alien vdX virtio-blk devices, which makes migration easier.
It becomes possible to attach many disks without burning through free
PCI slots. We don't need to update guests
On Fri, Apr 15, 2011 at 2:42 PM, Paolo Bonzini wrote:
> Lightly tested with Linux guests; at least it can successfully partition
> and format a disk. scsi-generic also lightly tested.
>
> Doesn't do migration, doesn't do hotplug (the device would support that,
> but it is not 100% documented and
Lightly tested with Linux guests; at least it can successfully partition
and format a disk. scsi-generic also lightly tested.
Doesn't do migration, doesn't do hotplug (the device would support that,
but it is not 100% documented and the Linux driver in particular cannot
initiate hot-unplug). I d
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