On Thu, Aug 03, 2017 at 03:27:00PM +0200, Hannes Reinecke wrote:
> Instead of having an 'invisible' LUN0 (in case LUN 0 is not connected)
> this patch maks LUN0 a enclosure service, exposing it to the OS.
>
> Signed-off-by: Hannes Reinecke <h...@suse.com>
> ---
> hw/scsi/scsi-bus.c | 56
> +++++++++++++++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 55 insertions(+), 1 deletion(-)
>
> diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
> index 23c51de..c89e82d 100644
> --- a/hw/scsi/scsi-bus.c
> +++ b/hw/scsi/scsi-bus.c
> @@ -493,10 +493,11 @@ static bool scsi_target_emulate_inquiry(SCSITargetReq
> *r)
> if (r->req.lun != 0) {
> r->buf[0] = TYPE_NO_LUN;
> } else {
> - r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE;
> + r->buf[0] = TYPE_ENCLOSURE;
> r->buf[2] = 5; /* Version */
> r->buf[3] = 2 | 0x10; /* HiSup, response data format */
> r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */
> + r->buf[6] = 0x40; /* Enclosure service */
> r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ.
> */
> memcpy(&r->buf[8], "QEMU ", 8);
> memcpy(&r->buf[16], "QEMU TARGET ", 16);
I would think this needs to be tied into machine type version, otherwise
when you migrate old to new QEMU, LUN0 is suddenly going to change beneath
the running guest ?
Regards,
Daniel
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