On 11/20/20 11:08 AM, Daniel P. Berrangé wrote:
The ESP SCSI controllers have same requirement as the LSI Logic
controller for each disk to be set via the scsi-id=NNN property,
not the lun=NNN property.


Maybe you could list the 3 controllers that are "ESP controllers" in the commit log message (it confused me for a minute because I didn't see the original commit where you added the support, so I didn't realize you'd added 3 separate new models, and not just a single new model) (I suspected it after seeing the code, of course, and a look with git blame verified my suspicion, so it was only momentary :-)



Switching the code to use an enum will force authors to pay attention
to this difference when adding future SCSI controllers.

Signed-off-by: Daniel P. Berrangé <berra...@redhat.com>


Reviewed-by: Laine Stump <la...@redhat.com>


(with extra points for keeping even the thought of last-century hardware alive :-)


---
  src/qemu/qemu_command.c                   | 26 +++++++++++++++++++++--
  tests/qemuxml2argvdata/sparc-minimal.args |  4 ++--
  2 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index fbaacb8dd8..479bcc0b0c 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1625,17 +1625,39 @@ qemuBuildDiskDeviceStr(const virDomainDef *def,
                                                         
disk->info.addr.drive.controller)))
             return NULL;
- if (controllerModel == VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSILOGIC) {
+        switch ((virDomainControllerModelSCSI)controllerModel) {
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSILOGIC:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_NCR53C90:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_DC390:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_AM53C974:
              virBufferAsprintf(&opt, ",bus=%s.%d,scsi-id=%d",
                                contAlias,
                                disk->info.addr.drive.bus,
                                disk->info.addr.drive.unit);
-        } else {
+            break;
+
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_AUTO:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_BUSLOGIC:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSISAS1068:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VMPVSCSI:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_IBMVSCSI:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VIRTIO_SCSI:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSISAS1078:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VIRTIO_TRANSITIONAL:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VIRTIO_NON_TRANSITIONAL:
              virBufferAsprintf(&opt, ",bus=%s.0,channel=%d,scsi-id=%d,lun=%d",
                                contAlias,
                                disk->info.addr.drive.bus,
                                disk->info.addr.drive.target,
                                disk->info.addr.drive.unit);
+            break;
+
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_DEFAULT:
+        case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LAST:
+            virReportError(VIR_ERR_INTERNAL_ERROR,
+                           _("Unexpected SCSI controller model %d"),
+                           controllerModel);
+            return NULL;
          }
if (scsiVPDDeviceId)
diff --git a/tests/qemuxml2argvdata/sparc-minimal.args 
b/tests/qemuxml2argvdata/sparc-minimal.args
index 65cf99c895..0bf4c8f825 100644
--- a/tests/qemuxml2argvdata/sparc-minimal.args
+++ b/tests/qemuxml2argvdata/sparc-minimal.args
@@ -26,9 +26,9 @@ 
path=/tmp/lib/domain--1-redhat62sparc/monitor.sock,server,nowait \
  -usb \
  -drive file=/home/berrange/VirtualMachines/redhat-6.2-sparc.img,format=qcow2,\
  if=none,id=drive-scsi0-0-0-0 \
--device scsi-hd,bus=scsi.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,\
+-device scsi-hd,bus=scsi.0,scsi-id=0,drive=drive-scsi0-0-0-0,\
  id=scsi0-0-0-0,bootindex=1 \
  -drive file=/home/berrange/VirtualMachines/redhat-6.2-sparc.iso,format=raw,\
  if=none,id=drive-scsi0-0-0-1,readonly=on \
--device scsi-cd,bus=scsi.0,channel=0,scsi-id=0,lun=1,drive=drive-scsi0-0-0-1,\
+-device scsi-cd,bus=scsi.0,scsi-id=1,drive=drive-scsi0-0-0-1,\
  id=scsi0-0-0-1


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