[libvirt] [PATCH] virsh domxml-from-native to treat SCSI as the bus type for pseries by default

[Shivaprasad G Bhat]

From: Shivaprasad G Bhat <sb...@linux.vnet.ibm.com>

The bus type IDE being enum Zero, the bus type on pseries system appears as IDE 
for all the disk types. Pseries platform needs this to appear as SCSI instead 
of IDE.

Signed-off-by: Shivaprasad G Bhat <sb...@linux.vnet.ibm.com>
---
 src/qemu/qemu_command.c |   21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index abb62e9..728409f 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -9995,6 +9995,7 @@ error:
 static virDomainDiskDefPtr
 qemuParseCommandLineDisk(virDomainXMLOptionPtr xmlopt,
                          const char *val,
+                        virDomainDefPtr dom,
                          int nvirtiodisk,
                          bool old_style_ceph_args)
 {
@@ -10018,7 +10019,11 @@ qemuParseCommandLineDisk(virDomainXMLOptionPtr xmlopt,
     if (VIR_ALLOC(def) < 0)
         goto cleanup;
 
-    def->bus = VIR_DOMAIN_DISK_BUS_IDE;
+    if (((dom->os.arch == VIR_ARCH_PPC64) &&
+         dom->os.machine && STREQ(dom->os.machine, "pseries")))
+        def->bus = VIR_DOMAIN_DISK_BUS_SCSI;
+    else
+       def->bus = VIR_DOMAIN_DISK_BUS_IDE;
     def->device = VIR_DOMAIN_DISK_DEVICE_DISK;
     def->type = VIR_DOMAIN_DISK_TYPE_FILE;
 
@@ -11332,8 +11337,13 @@ qemuParseCommandLine(virCapsPtr qemuCaps,
                 disk->type = VIR_DOMAIN_DISK_TYPE_FILE;
             if (STREQ(arg, "-cdrom")) {
                 disk->device = VIR_DOMAIN_DISK_DEVICE_CDROM;
-                if (VIR_STRDUP(disk->dst, "hdc") < 0)
-                    goto error;
+               if (((def->os.arch == VIR_ARCH_PPC64) &&
+                     def->os.machine && STREQ(def->os.machine, "pseries"))) {
+                        disk->bus = VIR_DOMAIN_DISK_BUS_SCSI;
+                       if (VIR_STRDUP(disk->dst, "sdc") < 0)
+                           goto error;
+               } else if (VIR_STRDUP(disk->dst, "hdc") < 0)
+                       goto error;
                 disk->readonly = true;
             } else {
                 if (STRPREFIX(arg, "-fd")) {
@@ -11345,6 +11355,9 @@ qemuParseCommandLine(virCapsPtr qemuCaps,
                         disk->bus = VIR_DOMAIN_DISK_BUS_IDE;
                     else
                         disk->bus = VIR_DOMAIN_DISK_BUS_SCSI;
+                   if (((def->os.arch == VIR_ARCH_PPC64) &&
+                       def->os.machine && STREQ(def->os.machine, "pseries")))
+                       disk->bus = VIR_DOMAIN_DISK_BUS_SCSI;
                 }
                 if (VIR_STRDUP(disk->dst, arg + 1) < 0)
                     goto error;
@@ -11636,7 +11649,7 @@ qemuParseCommandLine(virCapsPtr qemuCaps,
             }
         } else if (STREQ(arg, "-drive")) {
             WANT_VALUE();
-            if (!(disk = qemuParseCommandLineDisk(xmlopt, val,
+            if (!(disk = qemuParseCommandLineDisk(xmlopt, val, def,
                                                   nvirtiodisk,
                                                   ceph_args != NULL)))
                 goto error;

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