On Wed, 2012-07-04 at 16:50 +0200, Paolo Bonzini wrote:
> Il 04/07/2012 06:24, Nicholas A. Bellinger ha scritto:
> > From: Nicholas Bellinger <n...@linux-iscsi.org>
> > 
> > This is currently required for connecting to tcm_vhost in order to prevent
> > the client LUN scan from detecting the same tcm_vhost WWPN on multiple 
> > target
> > IDs.
> 
> But that's what the config field is for... why can't tcm_vhost (or QEMU)
> set max_id to 0?
> 

So this patch was carried forward from Stefan's original code that I
thought was required due to other limitations..

If that's not the case anymore I'm happy to drop it for now and look
into a proper fix outside of virtio-scsi.

> Paolo
> 
> > Cc: Paolo Bonzini <pbonz...@redhat.com>
> > Cc: Stefan Hajnoczi <stefa...@linux.vnet.ibm.com>
> > Cc: Zhi Yong Wu <wu...@cn.ibm.com>
> > Cc: Christoph Hellwig <h...@lst.de>
> > Cc: Hannes Reinecke <h...@suse.de>
> > Signed-off-by: Nicholas Bellinger <n...@linux-iscsi.org>
> > ---
> >  drivers/scsi/virtio_scsi.c |    5 ++++-
> >  1 files changed, 4 insertions(+), 1 deletions(-)
> > 
> > diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
> > index 391b30d..8711951 100644
> > --- a/drivers/scsi/virtio_scsi.c
> > +++ b/drivers/scsi/virtio_scsi.c
> > @@ -475,7 +475,10 @@ static int __devinit virtscsi_probe(struct 
> > virtio_device *vdev)
> >     shost->cmd_per_lun = min_t(u32, cmd_per_lun, shost->can_queue);
> >     shost->max_sectors = virtscsi_config_get(vdev, max_sectors) ?: 0xFFFF;
> >     shost->max_lun = virtscsi_config_get(vdev, max_lun) + 1;
> > -   shost->max_id = virtscsi_config_get(vdev, max_target) + 1;
> > +   /*
> > +    * Currently required for tcm_vhost to function..
> > +    */
> > +   shost->max_id = 1;
> >     shost->max_channel = 0;
> >     shost->max_cmd_len = VIRTIO_SCSI_CDB_SIZE;
> >     err = scsi_add_host(shost, &vdev->dev);
> > 
> 
> 
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