storage: add ide bus support

circle/dashboard/templates/dashboard/_disk-list-element.html

@@ -25,5 +25,6 @@
 <div style="clear: both;"></div>
 
 {% if request.user.is_superuser %}
-  <small>{% trans "File name" %}: {{ d.filename }}</small>
+  <small>{% trans "File name" %}: {{ d.filename }}</small><br/>
+  <small>{% trans "Bus" %}: {{ d.device_bus }}</small>
 {% endif %}

circle/storage/migrations/0002_disk_bus.py

+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('storage', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='disk',
+            name='bus',
+            field=models.CharField(default=None, max_length=10, null=True, blank=True, choices=[('virtio', 'virtio'), ('ide', 'ide'), ('scsi', 'scsi')]),
+            preserve_default=True,
+        ),
+    ]

circle/storage/models.py

@@ -83,12 +83,15 @@ class Disk(TimeStampedModel):
     """
     TYPES = [('qcow2-norm', 'qcow2 normal'), ('qcow2-snap', 'qcow2 snapshot'),
              ('iso', 'iso'), ('raw-ro', 'raw read-only'), ('raw-rw', 'raw')]
+    BUS_TYPES = (('virtio', 'virtio'), ('ide', 'ide'), ('scsi', 'scsi'))
     name = CharField(blank=True, max_length=100, verbose_name=_("name"))
     filename = CharField(max_length=256, unique=True,
                          verbose_name=_("filename"))
     datastore = ForeignKey(DataStore, verbose_name=_("datastore"),
                            help_text=_("The datastore that holds the disk."))
     type = CharField(max_length=10, choices=TYPES)
+    bus = CharField(max_length=10, choices=BUS_TYPES, null=True, blank=True,
+                    default=None)
     size = FileSizeField(null=True, default=None)
     base = ForeignKey('self', blank=True, null=True,
                       related_name='derivatives')
@@ -222,6 +225,8 @@ class Disk(TimeStampedModel):
     def device_bus(self):
         """Returns the proper device prefix for different types of images.
         """
+        if self.bus:
+            return self.bus
         return {
             'qcow2-norm': 'virtio',
             'qcow2-snap': 'virtio',