Re: [PATCH] virtio-scsi: Add vdrv->scan for post VIRTIO_CONFIG_S_DRIVER_OK LUN scanning

["Nicholas A. Bellinger" <nab@linux-iscsi.org>]

On Wed, 2012-07-11 at 19:37 +0100, James Bottomley wrote:
> On Fri, 2012-07-06 at 20:15 +0000, Nicholas A. Bellinger wrote:
> > From: Nicholas Bellinger <nab@linux-iscsi.org>
> > 
> > This patch changes virtio-scsi to use a new virtio_driver->scan() callback
> > so that scsi_scan_host() can be properly invoked once virtio_dev_probe() has
> > set add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK) to signal active virtio-ring
> > operation, instead of from within virtscsi_probe().
> > 
> > This fixes a bug where SCSI LUN scanning for both virtio-scsi-raw and
> > virtio-scsi/tcm_vhost setups was happening before VIRTIO_CONFIG_S_DRIVER_OK
> > had been set, causing VIRTIO_SCSI_S_BAD_TARGET to occur.  This fixes a bug
> > with virtio-scsi/tcm_vhost where LUN scan was not detecting LUNs.
> > 
> > Tested with virtio-scsi-raw + virtio-scsi/tcm_vhost w/ IBLOCK on 3.5-rc2 code.
> > 
> > Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
> > Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
> > Cc: Zhi Yong Wu <wuzhy@cn.ibm.com>
> > Cc: Christoph Hellwig <hch@lst.de>
> > Cc: Hannes Reinecke <hare@suse.de>
> > Cc: <stable@vger.kernel.org>
> > Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
> > ---
> >  drivers/scsi/virtio_scsi.c |   15 ++++++++++++---
> >  drivers/virtio/virtio.c    |    5 ++++-
> >  include/linux/virtio.h     |    1 +
> >  3 files changed, 17 insertions(+), 4 deletions(-)
> 
> This doesn't apply:
> 
> patching file drivers/scsi/virtio_scsi.c
> Hunk #1 succeeded at 677 (offset 196 lines).
> Hunk #2 FAILED at 494.
> Hunk #3 succeeded at 736 (offset 198 lines).
> 1 out of 3 hunks FAILED -- saving rejects to file
> drivers/scsi/virtio_scsi.c.rej
> 
> could you respin against scsi-misc head?
> 

The updated patch is on it's way rebased against scsi.git/misc.

Thanks James!