[libvirt PATCH] qemu: fix setting of scsi-id for ESP SCSI controllers

[Daniel P. Berrangé]

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.

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 <berrange at redhat.com>
---
 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
-- 
2.28.0