Merge lp:~rvb/maas/add-space-subnet into lp:~maas-committers/maas/trunk

[Raphaël Badin]

Add space and subnet models.

This branch contains:
- The Space model
- The Subnet model
- The schema migration to create the Space and Subnet tables
- The data migration to create the default Space object

Couple of notes:
- I had to refactor the CIDRField field; Django tries to be clever when an object is 'iterable' and thus was breaking when performing lookups on IPNetwork objects.
- I kept the Subnets unique=True for now although we hope to relax this restriction in the future.

[Mike Pontillo (mpontillo)]

I haven't done a full review (yet) but wanted to submit a few comments below.

[Mike Pontillo (mpontillo)]

Looks good. Just one comment regarding the gateway_ip below. (Will it *always* be required?)

review: Approve

[Raphaël Badin (rvb)]

Thanks for the review. I've update the gateway_ip definition.

=== modified file 'src/maasserver/fields.py'
--- src/maasserver/fields.py	2015-06-17 14:52:20 +0000
+++ src/maasserver/fields.py	2015-06-22 16:52:47 +0000
@@ -104,6 +104,7 @@
         "^maasserver\.fields\.EditableBinaryField",
         "^maasserver\.fields\.MAASIPAddressField",
         "^maasserver\.fields\.LargeObjectField",
+        "^maasserver\.fields\.CIDRField",
     ])
 
 
@@ -541,7 +542,7 @@
 
 def parse_cidr(value):
     try:
-        return IPNetwork(value)
+        return unicode(IPNetwork(value).cidr)
     except AddrFormatError as e:
         raise ValidationError(e.message)
 
@@ -555,7 +556,7 @@
         return 'cidr'
 
     def get_prep_value(self, value):
-        return unicode(value.cidr)
+        return parse_cidr(value)
 
     def from_db_value(self, value, expression, connection, context):
         if value is None:
@@ -564,7 +565,7 @@
 
     def to_python(self, value):
         if isinstance(value, IPNetwork):
-            return value
+            return unicode(value)
         if not value:
             return value
         return parse_cidr(value)

=== added file 'src/maasserver/migrations/0142_add_space_subnet.py'
--- src/maasserver/migrations/0142_add_space_subnet.py	1970-01-01 00:00:00 +0000
+++ src/maasserver/migrations/0142_add_space_subnet.py	2015-06-22 16:52:47 +0000
@@ -0,0 +1,532 @@
+from django.db import models
+from south.db import db
+# -*- coding: utf-8 -*-
+from south.utils import datetime_utils as datetime
+from south.v2 import SchemaMigration
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Adding model 'Space'
+        db.create_table(u'maasserver_space', (
+            (u'id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('created', self.gf('django.db.models.fields.DateTimeField')()),
+            ('updated', self.gf('django.db.models.fields.DateTimeField')()),
+            ('name', self.gf('django.db.models.fields.CharField')(unique=True, max_length=256)),
+        ))
+        db.send_create_signal(u'maasserver', ['Space'])
+
+        # Adding model 'Subnet'
+        db.create_table(u'maasserver_subnet', (
+            (u'id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('created', self.gf('django.db.models.fields.DateTimeField')()),
+            ('updated', self.gf('django.db.models.fields.DateTimeField')()),
+            ('name', self.gf('django.db.models.fields.CharField')(max_length=255)),
+            ('vlan', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['maasserver.VLAN'], default=0, on_delete=models.PROTECT)),
+            ('space', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['maasserver.Space'], default=0, on_delete=models.PROTECT)),
+            ('cidr', self.gf('maasserver.fields.CIDRField')(unique=True)),
+            ('gateway_ip', self.gf('maasserver.fields.MAASIPAddressField')(max_length=39, null=True, blank=True)),
+            ('dns_servers', self.gf('djorm_pgarray.fields.ArrayField')(default={}, dbtype=u'text', null=True, blank=True)),
+        ))
+        db.send_create_signal(u'maasserver', ['Subnet'])
+
+        # Adding unique constraint on 'Subnet', fields ['name', 'space']
+        db.create_unique(u'maasserver_subnet', ['name', 'space_id'])
+
+
+    def backwards(self, orm):
+        # Removing unique constraint on 'Subnet', fields ['name', 'space']
+        db.delete_unique(u'maasserver_subnet', ['name', 'space_id'])
+
+        # Deleting model 'Space'
+        db.delete_table(u'maasserver_space')
+
+        # Deleting model 'Subnet'
+        db.delete_table(u'maasserver_subnet')
+
+
+    models = {
+        u'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        u'auth.permission': {
+            'Meta': {'ordering': "(u'content_type__app_label', u'content_type__model', u'codename')", 'unique_together': "((u'content_type', u'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['contenttypes.ContentType']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        u'auth.user': {
+            'Meta': {'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'unique': 'True', 'max_length': '75', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'related_name': "u'user_set'", 'blank': 'True', 'to': u"orm['auth.Group']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'related_name': "u'user_set'", 'blank': 'True', 'to': u"orm['auth.Permission']"}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+        },
+        u'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        },
+        u'maasserver.blockdevice': {
+            'Meta': {'ordering': "[u'id']", 'unique_together': "((u'node', u'path'),)", 'object_name': 'BlockDevice'},
+            'block_size': ('django.db.models.fields.IntegerField', [], {}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'id_path': ('django.db.models.fields.FilePathField', [], {'max_length': '100', 'null': 'True', 'blank': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'node': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Node']"}),
+            'path': ('django.db.models.fields.FilePathField', [], {'max_length': '100'}),
+            'size': ('django.db.models.fields.BigIntegerField', [], {}),
+            'tags': ('djorm_pgarray.fields.ArrayField', [], {'default': '[]', 'dbtype': "u'text'", 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.bootresource': {
+            'Meta': {'unique_together': "((u'name', u'architecture'),)", 'object_name': 'BootResource'},
+            'architecture': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'extra': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'rtype': ('django.db.models.fields.IntegerField', [], {'max_length': '10'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.bootresourcefile': {
+            'Meta': {'unique_together': "((u'resource_set', u'filetype'),)", 'object_name': 'BootResourceFile'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'extra': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            'filename': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'filetype': ('django.db.models.fields.CharField', [], {'default': "u'root-tgz'", 'max_length': '20'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'largefile': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.LargeFile']"}),
+            'resource_set': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'files'", 'to': u"orm['maasserver.BootResourceSet']"}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.bootresourceset': {
+            'Meta': {'unique_together': "((u'resource', u'version'),)", 'object_name': 'BootResourceSet'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'label': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'resource': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'sets'", 'to': u"orm['maasserver.BootResource']"}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'version': ('django.db.models.fields.CharField', [], {'max_length': '255'})
+        },
+        u'maasserver.bootsource': {
+            'Meta': {'object_name': 'BootSource'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'keyring_data': ('maasserver.fields.EditableBinaryField', [], {'blank': 'True'}),
+            'keyring_filename': ('django.db.models.fields.FilePathField', [], {'max_length': '100', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'url': ('django.db.models.fields.URLField', [], {'unique': 'True', 'max_length': '200'})
+        },
+        u'maasserver.bootsourcecache': {
+            'Meta': {'object_name': 'BootSourceCache'},
+            'arch': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'boot_source': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.BootSource']"}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'label': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'os': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'release': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'subarch': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.bootsourceselection': {
+            'Meta': {'unique_together': "((u'boot_source', u'os', u'release'),)", 'object_name': 'BootSourceSelection'},
+            'arches': ('djorm_pgarray.fields.ArrayField', [], {'default': 'None', 'dbtype': "u'text'", 'null': 'True', 'blank': 'True'}),
+            'boot_source': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.BootSource']"}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'labels': ('djorm_pgarray.fields.ArrayField', [], {'default': 'None', 'dbtype': "u'text'", 'null': 'True', 'blank': 'True'}),
+            'os': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '20', 'blank': 'True'}),
+            'release': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '20', 'blank': 'True'}),
+            'subarches': ('djorm_pgarray.fields.ArrayField', [], {'default': 'None', 'dbtype': "u'text'", 'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.candidatename': {
+            'Meta': {'unique_together': "((u'name', u'position'),)", 'object_name': 'CandidateName'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.SlugField', [], {'max_length': '50'}),
+            'position': ('django.db.models.fields.IntegerField', [], {})
+        },
+        u'maasserver.componenterror': {
+            'Meta': {'object_name': 'ComponentError'},
+            'component': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'error': ('django.db.models.fields.CharField', [], {'max_length': '1000'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.config': {
+            'Meta': {'object_name': 'Config'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
+            'value': ('maasserver.fields.JSONObjectField', [], {'null': 'True'})
+        },
+        u'maasserver.dhcplease': {
+            'Meta': {'object_name': 'DHCPLease'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip': ('maasserver.fields.MAASIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'mac': ('maasserver.fields.MACAddressField', [], {}),
+            'nodegroup': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.NodeGroup']"})
+        },
+        u'maasserver.downloadprogress': {
+            'Meta': {'object_name': 'DownloadProgress'},
+            'bytes_downloaded': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'error': ('django.db.models.fields.CharField', [], {'max_length': '1000', 'blank': 'True'}),
+            'filename': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'nodegroup': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.NodeGroup']"}),
+            'size': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.event': {
+            'Meta': {'object_name': 'Event'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'description': ('django.db.models.fields.TextField', [], {'default': "u''", 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'node': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Node']"}),
+            'type': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.EventType']"}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.eventtype': {
+            'Meta': {'object_name': 'EventType'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'description': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'level': ('django.db.models.fields.IntegerField', [], {'db_index': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.fabric': {
+            'Meta': {'object_name': 'Fabric'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '256'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.filestorage': {
+            'Meta': {'unique_together': "((u'filename', u'owner'),)", 'object_name': 'FileStorage'},
+            'content': ('metadataserver.fields.BinaryField', [], {'blank': 'True'}),
+            'filename': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'key': ('django.db.models.fields.CharField', [], {'default': "u'bc8c7430-18fe-11e5-8aa3-3c970e0e56dc'", 'unique': 'True', 'max_length': '36'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': u"orm['auth.User']", 'null': 'True', 'blank': 'True'})
+        },
+        u'maasserver.filesystem': {
+            'Meta': {'object_name': 'Filesystem'},
+            'block_device': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.BlockDevice']", 'null': 'True', 'blank': 'True'}),
+            'create_params': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'filesystem_group': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "u'filesystems'", 'null': 'True', 'to': u"orm['maasserver.FilesystemGroup']"}),
+            'fstype': ('django.db.models.fields.CharField', [], {'default': "u'ext4'", 'max_length': '20'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'mount_params': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'mount_point': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'partition': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Partition']", 'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'uuid': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '36'})
+        },
+        u'maasserver.filesystemgroup': {
+            'Meta': {'object_name': 'FilesystemGroup'},
+            'create_params': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'group_type': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'uuid': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '36'})
+        },
+        u'maasserver.interface': {
+            'Meta': {'ordering': "(u'created',)", 'object_name': 'Interface'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ipv4_params': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            'ipv6_params': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            'mac': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.MACAddress']", 'null': 'True', 'blank': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'params': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            'parents': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': u"orm['maasserver.Interface']", 'null': 'True', 'through': u"orm['maasserver.InterfaceRelationship']", 'blank': 'True'}),
+            'tags': ('djorm_pgarray.fields.ArrayField', [], {'default': '[]', 'dbtype': "u'text'", 'blank': 'True'}),
+            'type': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.VLAN']", 'on_delete': 'models.PROTECT'})
+        },
+        u'maasserver.interfacerelationship': {
+            'Meta': {'object_name': 'InterfaceRelationship'},
+            'child': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'parent_relationships'", 'to': u"orm['maasserver.Interface']"}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'parent': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'children_relationships'", 'to': u"orm['maasserver.Interface']"}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.largefile': {
+            'Meta': {'object_name': 'LargeFile'},
+            'content': ('maasserver.fields.LargeObjectField', [], {}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'sha256': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '64'}),
+            'total_size': ('django.db.models.fields.BigIntegerField', [], {}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.licensekey': {
+            'Meta': {'unique_together': "((u'osystem', u'distro_series'),)", 'object_name': 'LicenseKey'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'distro_series': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'license_key': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'osystem': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.macaddress': {
+            'Meta': {'ordering': "(u'created',)", 'object_name': 'MACAddress'},
+            'cluster_interface': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': u"orm['maasserver.NodeGroupInterface']", 'null': 'True', 'on_delete': 'models.SET_NULL', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip_addresses': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['maasserver.StaticIPAddress']", 'symmetrical': 'False', 'through': u"orm['maasserver.MACStaticIPAddressLink']", 'blank': 'True'}),
+            'mac_address': ('maasserver.fields.MACAddressField', [], {'unique': 'True'}),
+            'networks': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['maasserver.Network']", 'symmetrical': 'False', 'blank': 'True'}),
+            'node': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Node']", 'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.macstaticipaddresslink': {
+            'Meta': {'unique_together': "((u'ip_address', u'mac_address'),)", 'object_name': 'MACStaticIPAddressLink'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip_address': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.StaticIPAddress']", 'unique': 'True'}),
+            'mac_address': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.MACAddress']"}),
+            'nic_alias': ('django.db.models.fields.IntegerField', [], {'default': 'None', 'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.network': {
+            'Meta': {'object_name': 'Network'},
+            'default_gateway': ('maasserver.fields.MAASIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'dns_servers': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip': ('maasserver.fields.MAASIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
+            'netmask': ('maasserver.fields.MAASIPAddressField', [], {'max_length': '39'}),
+            'vlan_tag': ('django.db.models.fields.PositiveSmallIntegerField', [], {'unique': 'True', 'null': 'True', 'blank': 'True'})
+        },
+        u'maasserver.node': {
+            'Meta': {'object_name': 'Node'},
+            'agent_name': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'architecture': ('django.db.models.fields.CharField', [], {'max_length': '31', 'null': 'True', 'blank': 'True'}),
+            'boot_type': ('django.db.models.fields.CharField', [], {'default': "u'fastpath'", 'max_length': '20'}),
+            'cpu_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'disable_ipv4': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'distro_series': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '20', 'blank': 'True'}),
+            'error': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'blank': 'True'}),
+            'error_description': ('django.db.models.fields.TextField', [], {'default': "u''", 'blank': 'True'}),
+            'hostname': ('django.db.models.fields.CharField', [], {'default': "u''", 'unique': 'True', 'max_length': '255', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'installable': ('django.db.models.fields.BooleanField', [], {'default': 'True', 'db_index': 'True'}),
+            'license_key': ('django.db.models.fields.CharField', [], {'max_length': '30', 'null': 'True', 'blank': 'True'}),
+            'memory': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'netboot': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'nodegroup': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.NodeGroup']", 'null': 'True'}),
+            'osystem': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '20', 'blank': 'True'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': u"orm['auth.User']", 'null': 'True', 'blank': 'True'}),
+            'parent': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "u'children'", 'null': 'True', 'blank': 'True', 'to': u"orm['maasserver.Node']"}),
+            'power_parameters': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            'power_state': ('django.db.models.fields.CharField', [], {'default': "u'unknown'", 'max_length': '10'}),
+            'power_type': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '10', 'blank': 'True'}),
+            'pxe_mac': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'+'", 'on_delete': 'models.SET_NULL', 'default': 'None', 'to': u"orm['maasserver.MACAddress']", 'blank': 'True', 'null': 'True'}),
+            'routers': ('djorm_pgarray.fields.ArrayField', [], {'default': 'None', 'dbtype': "u'macaddr'", 'null': 'True', 'blank': 'True'}),
+            'status': ('django.db.models.fields.IntegerField', [], {'default': '0', 'max_length': '10'}),
+            'swap_size': ('django.db.models.fields.BigIntegerField', [], {'default': 'None', 'null': 'True', 'blank': 'True'}),
+            'system_id': ('django.db.models.fields.CharField', [], {'default': "u'node-bc8b6b3a-18fe-11e5-8aa3-3c970e0e56dc'", 'unique': 'True', 'max_length': '41'}),
+            'tags': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['maasserver.Tag']", 'symmetrical': 'False'}),
+            'token': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['piston.Token']", 'null': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'zone': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Zone']", 'on_delete': 'models.SET_DEFAULT'})
+        },
+        u'maasserver.nodegroup': {
+            'Meta': {'object_name': 'NodeGroup'},
+            'api_key': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '18'}),
+            'api_token': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['piston.Token']", 'unique': 'True'}),
+            'cluster_name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '100', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'default_disable_ipv4': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'dhcp_key': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'maas_url': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'blank': 'True'}),
+            'name': ('maasserver.models.nodegroup.DomainNameField', [], {'max_length': '80', 'blank': 'True'}),
+            'status': ('django.db.models.fields.IntegerField', [], {'default': '1'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'uuid': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '36'})
+        },
+        u'maasserver.nodegroupinterface': {
+            'Meta': {'unique_together': "((u'nodegroup', u'name'),)", 'object_name': 'NodeGroupInterface'},
+            'broadcast_ip': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'foreign_dhcp_ip': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'interface': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'blank': 'True'}),
+            'ip': ('maasserver.fields.MAASIPAddressField', [], {'max_length': '39'}),
+            'ip_range_high': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'ip_range_low': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'management': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'name': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'blank': 'True'}),
+            'nodegroup': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.NodeGroup']"}),
+            'router_ip': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'static_ip_range_high': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'static_ip_range_low': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'subnet_mask': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.VLAN']", 'on_delete': 'models.PROTECT'})
+        },
+        u'maasserver.partition': {
+            'Meta': {'object_name': 'Partition'},
+            'bootable': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'partition_table': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'partitions'", 'to': u"orm['maasserver.PartitionTable']"}),
+            'size': ('django.db.models.fields.BigIntegerField', [], {}),
+            'start_offset': ('django.db.models.fields.BigIntegerField', [], {}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'uuid': ('django.db.models.fields.CharField', [], {'max_length': '36', 'unique': 'True', 'null': 'True', 'blank': 'True'})
+        },
+        u'maasserver.partitiontable': {
+            'Meta': {'object_name': 'PartitionTable'},
+            'block_device': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.BlockDevice']"}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'table_type': ('django.db.models.fields.CharField', [], {'default': "u'GPT'", 'max_length': '20'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.physicalblockdevice': {
+            'Meta': {'ordering': "[u'id']", 'object_name': 'PhysicalBlockDevice', '_ormbases': [u'maasserver.BlockDevice']},
+            u'blockdevice_ptr': ('django.db.models.fields.related.OneToOneField', [], {'to': u"orm['maasserver.BlockDevice']", 'unique': 'True', 'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
+            'serial': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'})
+        },
+        u'maasserver.space': {
+            'Meta': {'object_name': 'Space'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '256'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.sshkey': {
+            'Meta': {'unique_together': "((u'user', u'key'),)", 'object_name': 'SSHKey'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'key': ('django.db.models.fields.TextField', [], {}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']"})
+        },
+        u'maasserver.sslkey': {
+            'Meta': {'unique_together': "((u'user', u'key'),)", 'object_name': 'SSLKey'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'key': ('django.db.models.fields.TextField', [], {}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']"})
+        },
+        u'maasserver.staticipaddress': {
+            'Meta': {'object_name': 'StaticIPAddress'},
+            'alloc_type': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'hostname': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip': ('maasserver.fields.MAASIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': u"orm['auth.User']", 'null': 'True', 'blank': 'True'})
+        },
+        u'maasserver.subnet': {
+            'Meta': {'unique_together': "((u'name', u'space'),)", 'object_name': 'Subnet'},
+            'cidr': ('maasserver.fields.CIDRField', [], {'unique': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'dns_servers': ('djorm_pgarray.fields.ArrayField', [], {'default': '[]', 'dbtype': "u'text'", 'null': 'True', 'blank': 'True'}),
+            'gateway_ip': ('maasserver.fields.MAASIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'space': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Space']", 'on_delete': 'models.PROTECT'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.VLAN']", 'on_delete': 'models.PROTECT'})
+        },
+        u'maasserver.tag': {
+            'Meta': {'object_name': 'Tag'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'definition': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'kernel_opts': ('django.db.models.fields.TextField', [], {'null': 'True', 'blank': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '256'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.userprofile': {
+            'Meta': {'object_name': 'UserProfile'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'user': ('django.db.models.fields.related.OneToOneField', [], {'to': u"orm['auth.User']", 'unique': 'True'})
+        },
+        u'maasserver.virtualblockdevice': {
+            'Meta': {'ordering': "[u'id']", 'object_name': 'VirtualBlockDevice', '_ormbases': [u'maasserver.BlockDevice']},
+            u'blockdevice_ptr': ('django.db.models.fields.related.OneToOneField', [], {'to': u"orm['maasserver.BlockDevice']", 'unique': 'True', 'primary_key': 'True'}),
+            'filesystem_group': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'virtual_devices'", 'to': u"orm['maasserver.FilesystemGroup']"}),
+            'uuid': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '36'})
+        },
+        u'maasserver.vlan': {
+            'Meta': {'unique_together': "((u'vid', u'fabric'), (u'name', u'fabric'))", 'object_name': 'VLAN'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'fabric': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Fabric']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '256'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'vid': ('django.db.models.fields.IntegerField', [], {})
+        },
+        u'maasserver.zone': {
+            'Meta': {'ordering': "[u'name']", 'object_name': 'Zone'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '256'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'piston.consumer': {
+            'Meta': {'object_name': 'Consumer'},
+            'description': ('django.db.models.fields.TextField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'key': ('django.db.models.fields.CharField', [], {'max_length': '18'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'secret': ('django.db.models.fields.CharField', [], {'max_length': '32'}),
+            'status': ('django.db.models.fields.CharField', [], {'default': "'pending'", 'max_length': '16'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'consumers'", 'null': 'True', 'to': u"orm['auth.User']"})
+        },
+        u'piston.token': {
+            'Meta': {'object_name': 'Token'},
+            'callback': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'callback_confirmed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'consumer': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['piston.Consumer']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_approved': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'key': ('django.db.models.fields.CharField', [], {'max_length': '18'}),
+            'secret': ('django.db.models.fields.CharField', [], {'max_length': '32'}),
+            'timestamp': ('django.db.models.fields.IntegerField', [], {'default': '1434991806L'}),
+            'token_type': ('django.db.models.fields.IntegerField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'tokens'", 'null': 'True', 'to': u"orm['auth.User']"}),
+            'verifier': ('django.db.models.fields.CharField', [], {'max_length': '10'})
+        }
+    }
+
+    complete_apps = ['maasserver']
\ No newline at end of file

=== added file 'src/maasserver/migrations/0143_create_default_space.py'
--- src/maasserver/migrations/0143_create_default_space.py	1970-01-01 00:00:00 +0000
+++ src/maasserver/migrations/0143_create_default_space.py	2015-06-22 16:52:47 +0000
@@ -0,0 +1,501 @@
+from django.db import models
+from south.db import db
+# -*- coding: utf-8 -*-
+from south.utils import datetime_utils as datetime
+from south.v2 import DataMigration
+
+
+class Migration(DataMigration):
+
+    def forwards(self, orm):
+        now = datetime.datetime.now()
+        orm['maasserver.Space'](name="Default space", id=0, created=now, updated=now).save()
+
+    def backwards(self, orm):
+        pass
+
+    models = {
+        u'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        u'auth.permission': {
+            'Meta': {'ordering': "(u'content_type__app_label', u'content_type__model', u'codename')", 'unique_together': "((u'content_type', u'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['contenttypes.ContentType']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        u'auth.user': {
+            'Meta': {'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'unique': 'True', 'max_length': '75', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'related_name': "u'user_set'", 'blank': 'True', 'to': u"orm['auth.Group']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'related_name': "u'user_set'", 'blank': 'True', 'to': u"orm['auth.Permission']"}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+        },
+        u'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        },
+        u'maasserver.blockdevice': {
+            'Meta': {'ordering': "[u'id']", 'unique_together': "((u'node', u'path'),)", 'object_name': 'BlockDevice'},
+            'block_size': ('django.db.models.fields.IntegerField', [], {}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'id_path': ('django.db.models.fields.FilePathField', [], {'max_length': '100', 'null': 'True', 'blank': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'node': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Node']"}),
+            'path': ('django.db.models.fields.FilePathField', [], {'max_length': '100'}),
+            'size': ('django.db.models.fields.BigIntegerField', [], {}),
+            'tags': ('djorm_pgarray.fields.ArrayField', [], {'default': '[]', 'dbtype': "u'text'", 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.bootresource': {
+            'Meta': {'unique_together': "((u'name', u'architecture'),)", 'object_name': 'BootResource'},
+            'architecture': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'extra': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'rtype': ('django.db.models.fields.IntegerField', [], {'max_length': '10'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.bootresourcefile': {
+            'Meta': {'unique_together': "((u'resource_set', u'filetype'),)", 'object_name': 'BootResourceFile'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'extra': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            'filename': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'filetype': ('django.db.models.fields.CharField', [], {'default': "u'root-tgz'", 'max_length': '20'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'largefile': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.LargeFile']"}),
+            'resource_set': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'files'", 'to': u"orm['maasserver.BootResourceSet']"}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.bootresourceset': {
+            'Meta': {'unique_together': "((u'resource', u'version'),)", 'object_name': 'BootResourceSet'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'label': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'resource': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'sets'", 'to': u"orm['maasserver.BootResource']"}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'version': ('django.db.models.fields.CharField', [], {'max_length': '255'})
+        },
+        u'maasserver.bootsource': {
+            'Meta': {'object_name': 'BootSource'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'keyring_data': ('maasserver.fields.EditableBinaryField', [], {'blank': 'True'}),
+            'keyring_filename': ('django.db.models.fields.FilePathField', [], {'max_length': '100', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'url': ('django.db.models.fields.URLField', [], {'unique': 'True', 'max_length': '200'})
+        },
+        u'maasserver.bootsourcecache': {
+            'Meta': {'object_name': 'BootSourceCache'},
+            'arch': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'boot_source': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.BootSource']"}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'label': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'os': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'release': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'subarch': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.bootsourceselection': {
+            'Meta': {'unique_together': "((u'boot_source', u'os', u'release'),)", 'object_name': 'BootSourceSelection'},
+            'arches': ('djorm_pgarray.fields.ArrayField', [], {'default': 'None', 'dbtype': "u'text'", 'null': 'True', 'blank': 'True'}),
+            'boot_source': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.BootSource']"}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'labels': ('djorm_pgarray.fields.ArrayField', [], {'default': 'None', 'dbtype': "u'text'", 'null': 'True', 'blank': 'True'}),
+            'os': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '20', 'blank': 'True'}),
+            'release': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '20', 'blank': 'True'}),
+            'subarches': ('djorm_pgarray.fields.ArrayField', [], {'default': 'None', 'dbtype': "u'text'", 'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.candidatename': {
+            'Meta': {'unique_together': "((u'name', u'position'),)", 'object_name': 'CandidateName'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.SlugField', [], {'max_length': '50'}),
+            'position': ('django.db.models.fields.IntegerField', [], {})
+        },
+        u'maasserver.componenterror': {
+            'Meta': {'object_name': 'ComponentError'},
+            'component': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'error': ('django.db.models.fields.CharField', [], {'max_length': '1000'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.config': {
+            'Meta': {'object_name': 'Config'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
+            'value': ('maasserver.fields.JSONObjectField', [], {'null': 'True'})
+        },
+        u'maasserver.dhcplease': {
+            'Meta': {'object_name': 'DHCPLease'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip': ('maasserver.fields.MAASIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'mac': ('maasserver.fields.MACAddressField', [], {}),
+            'nodegroup': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.NodeGroup']"})
+        },
+        u'maasserver.downloadprogress': {
+            'Meta': {'object_name': 'DownloadProgress'},
+            'bytes_downloaded': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'error': ('django.db.models.fields.CharField', [], {'max_length': '1000', 'blank': 'True'}),
+            'filename': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'nodegroup': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.NodeGroup']"}),
+            'size': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.event': {
+            'Meta': {'object_name': 'Event'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'description': ('django.db.models.fields.TextField', [], {'default': "u''", 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'node': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Node']"}),
+            'type': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.EventType']"}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.eventtype': {
+            'Meta': {'object_name': 'EventType'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'description': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'level': ('django.db.models.fields.IntegerField', [], {'db_index': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.fabric': {
+            'Meta': {'object_name': 'Fabric'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '256'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.filestorage': {
+            'Meta': {'unique_together': "((u'filename', u'owner'),)", 'object_name': 'FileStorage'},
+            'content': ('metadataserver.fields.BinaryField', [], {'blank': 'True'}),
+            'filename': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'key': ('django.db.models.fields.CharField', [], {'default': "u'e274352a-18fe-11e5-af4a-3c970e0e56dc'", 'unique': 'True', 'max_length': '36'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': u"orm['auth.User']", 'null': 'True', 'blank': 'True'})
+        },
+        u'maasserver.filesystem': {
+            'Meta': {'object_name': 'Filesystem'},
+            'block_device': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.BlockDevice']", 'null': 'True', 'blank': 'True'}),
+            'create_params': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'filesystem_group': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "u'filesystems'", 'null': 'True', 'to': u"orm['maasserver.FilesystemGroup']"}),
+            'fstype': ('django.db.models.fields.CharField', [], {'default': "u'ext4'", 'max_length': '20'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'mount_params': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'mount_point': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'partition': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Partition']", 'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'uuid': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '36'})
+        },
+        u'maasserver.filesystemgroup': {
+            'Meta': {'object_name': 'FilesystemGroup'},
+            'create_params': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'group_type': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'uuid': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '36'})
+        },
+        u'maasserver.interface': {
+            'Meta': {'ordering': "(u'created',)", 'object_name': 'Interface'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ipv4_params': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            'ipv6_params': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            'mac': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.MACAddress']", 'null': 'True', 'blank': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'params': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            'parents': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': u"orm['maasserver.Interface']", 'null': 'True', 'through': u"orm['maasserver.InterfaceRelationship']", 'blank': 'True'}),
+            'tags': ('djorm_pgarray.fields.ArrayField', [], {'default': '[]', 'dbtype': "u'text'", 'blank': 'True'}),
+            'type': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.VLAN']", 'on_delete': 'models.PROTECT'})
+        },
+        u'maasserver.interfacerelationship': {
+            'Meta': {'object_name': 'InterfaceRelationship'},
+            'child': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'parent_relationships'", 'to': u"orm['maasserver.Interface']"}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'parent': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'children_relationships'", 'to': u"orm['maasserver.Interface']"}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.largefile': {
+            'Meta': {'object_name': 'LargeFile'},
+            'content': ('maasserver.fields.LargeObjectField', [], {}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'sha256': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '64'}),
+            'total_size': ('django.db.models.fields.BigIntegerField', [], {}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.licensekey': {
+            'Meta': {'unique_together': "((u'osystem', u'distro_series'),)", 'object_name': 'LicenseKey'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'distro_series': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'license_key': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'osystem': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.macaddress': {
+            'Meta': {'ordering': "(u'created',)", 'object_name': 'MACAddress'},
+            'cluster_interface': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': u"orm['maasserver.NodeGroupInterface']", 'null': 'True', 'on_delete': 'models.SET_NULL', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip_addresses': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['maasserver.StaticIPAddress']", 'symmetrical': 'False', 'through': u"orm['maasserver.MACStaticIPAddressLink']", 'blank': 'True'}),
+            'mac_address': ('maasserver.fields.MACAddressField', [], {'unique': 'True'}),
+            'networks': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['maasserver.Network']", 'symmetrical': 'False', 'blank': 'True'}),
+            'node': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Node']", 'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.macstaticipaddresslink': {
+            'Meta': {'unique_together': "((u'ip_address', u'mac_address'),)", 'object_name': 'MACStaticIPAddressLink'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip_address': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.StaticIPAddress']", 'unique': 'True'}),
+            'mac_address': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.MACAddress']"}),
+            'nic_alias': ('django.db.models.fields.IntegerField', [], {'default': 'None', 'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.network': {
+            'Meta': {'object_name': 'Network'},
+            'default_gateway': ('maasserver.fields.MAASIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'dns_servers': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip': ('maasserver.fields.MAASIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
+            'netmask': ('maasserver.fields.MAASIPAddressField', [], {'max_length': '39'}),
+            'vlan_tag': ('django.db.models.fields.PositiveSmallIntegerField', [], {'unique': 'True', 'null': 'True', 'blank': 'True'})
+        },
+        u'maasserver.node': {
+            'Meta': {'object_name': 'Node'},
+            'agent_name': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'architecture': ('django.db.models.fields.CharField', [], {'max_length': '31', 'null': 'True', 'blank': 'True'}),
+            'boot_type': ('django.db.models.fields.CharField', [], {'default': "u'fastpath'", 'max_length': '20'}),
+            'cpu_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'disable_ipv4': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'distro_series': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '20', 'blank': 'True'}),
+            'error': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'blank': 'True'}),
+            'error_description': ('django.db.models.fields.TextField', [], {'default': "u''", 'blank': 'True'}),
+            'hostname': ('django.db.models.fields.CharField', [], {'default': "u''", 'unique': 'True', 'max_length': '255', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'installable': ('django.db.models.fields.BooleanField', [], {'default': 'True', 'db_index': 'True'}),
+            'license_key': ('django.db.models.fields.CharField', [], {'max_length': '30', 'null': 'True', 'blank': 'True'}),
+            'memory': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'netboot': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'nodegroup': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.NodeGroup']", 'null': 'True'}),
+            'osystem': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '20', 'blank': 'True'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': u"orm['auth.User']", 'null': 'True', 'blank': 'True'}),
+            'parent': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "u'children'", 'null': 'True', 'blank': 'True', 'to': u"orm['maasserver.Node']"}),
+            'power_parameters': ('maasserver.fields.JSONObjectField', [], {'default': "u''", 'blank': 'True'}),
+            'power_state': ('django.db.models.fields.CharField', [], {'default': "u'unknown'", 'max_length': '10'}),
+            'power_type': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '10', 'blank': 'True'}),
+            'pxe_mac': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'+'", 'on_delete': 'models.SET_NULL', 'default': 'None', 'to': u"orm['maasserver.MACAddress']", 'blank': 'True', 'null': 'True'}),
+            'routers': ('djorm_pgarray.fields.ArrayField', [], {'default': 'None', 'dbtype': "u'macaddr'", 'null': 'True', 'blank': 'True'}),
+            'status': ('django.db.models.fields.IntegerField', [], {'default': '0', 'max_length': '10'}),
+            'swap_size': ('django.db.models.fields.BigIntegerField', [], {'default': 'None', 'null': 'True', 'blank': 'True'}),
+            'system_id': ('django.db.models.fields.CharField', [], {'default': "u'node-e275dee8-18fe-11e5-af4a-3c970e0e56dc'", 'unique': 'True', 'max_length': '41'}),
+            'tags': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['maasserver.Tag']", 'symmetrical': 'False'}),
+            'token': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['piston.Token']", 'null': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'zone': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Zone']", 'on_delete': 'models.SET_DEFAULT'})
+        },
+        u'maasserver.nodegroup': {
+            'Meta': {'object_name': 'NodeGroup'},
+            'api_key': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '18'}),
+            'api_token': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['piston.Token']", 'unique': 'True'}),
+            'cluster_name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '100', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'default_disable_ipv4': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'dhcp_key': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'maas_url': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'blank': 'True'}),
+            'name': ('maasserver.models.nodegroup.DomainNameField', [], {'max_length': '80', 'blank': 'True'}),
+            'status': ('django.db.models.fields.IntegerField', [], {'default': '1'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'uuid': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '36'})
+        },
+        u'maasserver.nodegroupinterface': {
+            'Meta': {'unique_together': "((u'nodegroup', u'name'),)", 'object_name': 'NodeGroupInterface'},
+            'broadcast_ip': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'foreign_dhcp_ip': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'interface': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'blank': 'True'}),
+            'ip': ('maasserver.fields.MAASIPAddressField', [], {'max_length': '39'}),
+            'ip_range_high': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'ip_range_low': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'management': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'name': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'blank': 'True'}),
+            'nodegroup': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.NodeGroup']"}),
+            'router_ip': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'static_ip_range_high': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'static_ip_range_low': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'subnet_mask': ('maasserver.fields.MAASIPAddressField', [], {'default': 'None', 'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.VLAN']", 'on_delete': 'models.PROTECT'})
+        },
+        u'maasserver.partition': {
+            'Meta': {'object_name': 'Partition'},
+            'bootable': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'partition_table': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'partitions'", 'to': u"orm['maasserver.PartitionTable']"}),
+            'size': ('django.db.models.fields.BigIntegerField', [], {}),
+            'start_offset': ('django.db.models.fields.BigIntegerField', [], {}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'uuid': ('django.db.models.fields.CharField', [], {'max_length': '36', 'unique': 'True', 'null': 'True', 'blank': 'True'})
+        },
+        u'maasserver.partitiontable': {
+            'Meta': {'object_name': 'PartitionTable'},
+            'block_device': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.BlockDevice']"}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'table_type': ('django.db.models.fields.CharField', [], {'default': "u'GPT'", 'max_length': '20'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.physicalblockdevice': {
+            'Meta': {'ordering': "[u'id']", 'object_name': 'PhysicalBlockDevice', '_ormbases': [u'maasserver.BlockDevice']},
+            u'blockdevice_ptr': ('django.db.models.fields.related.OneToOneField', [], {'to': u"orm['maasserver.BlockDevice']", 'unique': 'True', 'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
+            'serial': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'})
+        },
+        u'maasserver.space': {
+            'Meta': {'object_name': 'Space'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '256'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.sshkey': {
+            'Meta': {'unique_together': "((u'user', u'key'),)", 'object_name': 'SSHKey'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'key': ('django.db.models.fields.TextField', [], {}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']"})
+        },
+        u'maasserver.sslkey': {
+            'Meta': {'unique_together': "((u'user', u'key'),)", 'object_name': 'SSLKey'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'key': ('django.db.models.fields.TextField', [], {}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']"})
+        },
+        u'maasserver.staticipaddress': {
+            'Meta': {'object_name': 'StaticIPAddress'},
+            'alloc_type': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'hostname': ('django.db.models.fields.CharField', [], {'default': "u''", 'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip': ('maasserver.fields.MAASIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': u"orm['auth.User']", 'null': 'True', 'blank': 'True'})
+        },
+        u'maasserver.subnet': {
+            'Meta': {'unique_together': "((u'name', u'space'),)", 'object_name': 'Subnet'},
+            'cidr': ('maasserver.fields.CIDRField', [], {'unique': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'dns_servers': ('djorm_pgarray.fields.ArrayField', [], {'default': '[]', 'dbtype': "u'text'", 'null': 'True', 'blank': 'True'}),
+            'gateway_ip': ('maasserver.fields.MAASIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'space': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Space']", 'on_delete': 'models.PROTECT'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.VLAN']", 'on_delete': 'models.PROTECT'})
+        },
+        u'maasserver.tag': {
+            'Meta': {'object_name': 'Tag'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'definition': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'kernel_opts': ('django.db.models.fields.TextField', [], {'null': 'True', 'blank': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '256'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'maasserver.userprofile': {
+            'Meta': {'object_name': 'UserProfile'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'user': ('django.db.models.fields.related.OneToOneField', [], {'to': u"orm['auth.User']", 'unique': 'True'})
+        },
+        u'maasserver.virtualblockdevice': {
+            'Meta': {'ordering': "[u'id']", 'object_name': 'VirtualBlockDevice', '_ormbases': [u'maasserver.BlockDevice']},
+            u'blockdevice_ptr': ('django.db.models.fields.related.OneToOneField', [], {'to': u"orm['maasserver.BlockDevice']", 'unique': 'True', 'primary_key': 'True'}),
+            'filesystem_group': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "u'virtual_devices'", 'to': u"orm['maasserver.FilesystemGroup']"}),
+            'uuid': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '36'})
+        },
+        u'maasserver.vlan': {
+            'Meta': {'unique_together': "((u'vid', u'fabric'), (u'name', u'fabric'))", 'object_name': 'VLAN'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'fabric': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['maasserver.Fabric']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '256'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {}),
+            'vid': ('django.db.models.fields.IntegerField', [], {})
+        },
+        u'maasserver.zone': {
+            'Meta': {'ordering': "[u'name']", 'object_name': 'Zone'},
+            'created': ('django.db.models.fields.DateTimeField', [], {}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '256'}),
+            'updated': ('django.db.models.fields.DateTimeField', [], {})
+        },
+        u'piston.consumer': {
+            'Meta': {'object_name': 'Consumer'},
+            'description': ('django.db.models.fields.TextField', [], {}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'key': ('django.db.models.fields.CharField', [], {'max_length': '18'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'secret': ('django.db.models.fields.CharField', [], {'max_length': '32'}),
+            'status': ('django.db.models.fields.CharField', [], {'default': "'pending'", 'max_length': '16'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'consumers'", 'null': 'True', 'to': u"orm['auth.User']"})
+        },
+        u'piston.token': {
+            'Meta': {'object_name': 'Token'},
+            'callback': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'callback_confirmed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'consumer': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['piston.Consumer']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_approved': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'key': ('django.db.models.fields.CharField', [], {'max_length': '18'}),
+            'secret': ('django.db.models.fields.CharField', [], {'max_length': '32'}),
+            'timestamp': ('django.db.models.fields.IntegerField', [], {'default': '1434991870L'}),
+            'token_type': ('django.db.models.fields.IntegerField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'tokens'", 'null': 'True', 'to': u"orm['auth.User']"}),
+            'verifier': ('django.db.models.fields.CharField', [], {'max_length': '10'})
+        }
+    }
+
+    complete_apps = ['maasserver']
+    symmetrical = True

=== modified file 'src/maasserver/models/__init__.py'
--- src/maasserver/models/__init__.py	2015-06-15 12:06:36 +0000
+++ src/maasserver/models/__init__.py	2015-06-22 16:52:47 +0000
@@ -41,8 +41,10 @@
     'Partition',
     'PartitionTable',
     'PhysicalBlockDevice',
+    'Space',
     'SSHKey',
     'SSLKey',
+    'Subnet',
     'Tag',
     'UserProfile',
     'VirtualBlockDevice',
@@ -92,9 +94,11 @@
 from maasserver.models.partition import Partition
 from maasserver.models.partitiontable import PartitionTable
 from maasserver.models.physicalblockdevice import PhysicalBlockDevice
+from maasserver.models.space import Space
 from maasserver.models.sshkey import SSHKey
 from maasserver.models.sslkey import SSLKey
 from maasserver.models.staticipaddress import StaticIPAddress
+from maasserver.models.subnet import Subnet
 from maasserver.models.tag import Tag
 from maasserver.models.user import create_user
 from maasserver.models.userprofile import UserProfile

=== added file 'src/maasserver/models/space.py'
--- src/maasserver/models/space.py	1970-01-01 00:00:00 +0000
+++ src/maasserver/models/space.py	2015-06-22 16:52:47 +0000
@@ -0,0 +1,80 @@
+# Copyright 2015 Canonical Ltd.  This software is licensed under the
+# GNU Affero General Public License version 3 (see the file LICENSE).
+
+"""Space objects."""
+
+from __future__ import (
+    absolute_import,
+    print_function,
+    unicode_literals,
+    )
+
+str = None
+
+__metaclass__ = type
+__all__ = [
+    "DEFAULT_SPACE_NAME",
+    "Space",
+    "SPACE_NAME_VALIDATOR",
+    ]
+
+import datetime
+
+from django.core.validators import RegexValidator
+from django.db.models import (
+    CharField,
+    Manager,
+)
+from maasserver import DefaultMeta
+from maasserver.models.cleansave import CleanSave
+from maasserver.models.timestampedmodel import TimestampedModel
+
+
+SPACE_NAME_VALIDATOR = RegexValidator('^[ \w-]+$')
+
+# Name of the special, default space.  This space cannot be deleted.
+DEFAULT_SPACE_NAME = 'Default space'
+
+
+class SpaceManager(Manager):
+    """Manager for :class:`Space` model."""
+
+    def get_default_space(self):
+        """Return the default space."""
+        now = datetime.datetime.now()
+        space, _ = self.get_or_create(
+            id=0,
+            defaults={
+                'id': 0,
+                'name': DEFAULT_SPACE_NAME,
+                'created': now,
+                'updated': now,
+            }
+        )
+        return space
+
+
+class Space(CleanSave, TimestampedModel):
+    """A `Space`.
+
+    :ivar name: The short-human-identifiable name for this space.
+    :ivar objects: An instance of the class :class:`SpaceManager`.
+    """
+
+    class Meta(DefaultMeta):
+        """Needed for South to recognize this model."""
+        verbose_name = "Space"
+        verbose_name_plural = "Spaces"
+
+    objects = SpaceManager()
+
+    name = CharField(
+        max_length=256, unique=True, editable=True,
+        validators=[SPACE_NAME_VALIDATOR])
+
+    def __unicode__(self):
+        return "name=%s" % self.name
+
+    def is_default(self):
+        """Is this the default space?"""
+        return self.id == 0

=== added file 'src/maasserver/models/subnet.py'
--- src/maasserver/models/subnet.py	1970-01-01 00:00:00 +0000
+++ src/maasserver/models/subnet.py	2015-06-22 16:52:47 +0000
@@ -0,0 +1,94 @@
+# Copyright 2015 Canonical Ltd.  This software is licensed under the
+# GNU Affero General Public License version 3 (see the file LICENSE).
+
+"""Model for subnets."""
+
+from __future__ import (
+    absolute_import,
+    print_function,
+    unicode_literals,
+)
+
+str = None
+
+__metaclass__ = type
+__all__ = [
+    'Subnet',
+]
+
+
+from django.core.exceptions import ValidationError
+from django.core.validators import RegexValidator
+from django.db.models import (
+    CharField,
+    ForeignKey,
+    PROTECT,
+)
+from djorm_pgarray.fields import ArrayField
+from maasserver import DefaultMeta
+from maasserver.fields import (
+    CIDRField,
+    MAASIPAddressField,
+)
+from maasserver.models.cleansave import CleanSave
+from maasserver.models.timestampedmodel import TimestampedModel
+from netaddr import (
+    IPAddress,
+    IPNetwork,
+)
+
+
+SUBNET_NAME_VALIDATOR = RegexValidator('^[.: \w/-]+$')
+
+
+def get_default_vlan():
+    from maasserver.models.vlan import VLAN
+    return VLAN.objects.get_default_vlan()
+
+
+class Subnet(CleanSave, TimestampedModel):
+
+    class Meta(DefaultMeta):
+        """Needed for South to recognize this model."""
+        unique_together = (
+            ('name', 'space'),
+        )
+
+    name = CharField(
+        blank=False, editable=True, max_length=255,
+        validators=[SUBNET_NAME_VALIDATOR],
+        help_text="Identifying name for this subnet.")
+
+    vlan = ForeignKey(
+        'VLAN', default=get_default_vlan, editable=True, blank=False,
+        null=False, on_delete=PROTECT)
+
+    space = ForeignKey(
+        'Space', editable=True, blank=False, null=False, on_delete=PROTECT)
+
+    # XXX:fabric: unique constraint should be relaxed once proper support for
+    # fabrics is implemented. The CIDR must be unique withing a Fabric, not
+    # globally unique.
+    cidr = CIDRField(
+        blank=False, unique=True, editable=True, null=False)
+
+    gateway_ip = MAASIPAddressField(blank=True, editable=True, null=True)
+
+    dns_servers = ArrayField(
+        dbtype="text", blank=True, editable=True, null=True, default=[])
+
+    def get_cidr(self):
+        return IPNetwork(self.cidr)
+
+    def __unicode__(self):
+        return "name=%s vlan.vid=%s, cidr=%s" % (
+            self.name, self.vlan.vid, self.cidr)
+
+    def validate_gateway_ip(self):
+        gateway_addr = IPAddress(self.gateway_ip)
+        if gateway_addr not in self.get_cidr():
+            message = "Gateway IP must be within CIDR range."
+            raise ValidationError({'gateway_ip': [message]})
+
+    def clean(self, *args, **kwargs):
+        self.validate_gateway_ip()

=== added file 'src/maasserver/models/tests/test_space.py'
--- src/maasserver/models/tests/test_space.py	1970-01-01 00:00:00 +0000
+++ src/maasserver/models/tests/test_space.py	2015-06-22 16:52:47 +0000
@@ -0,0 +1,69 @@
+
+# Copyright 2015 Canonical Ltd.  This software is licensed under the
+# GNU Affero General Public License version 3 (see the file LICENSE).
+
+"""Tests for the Space model."""
+
+from __future__ import (
+    absolute_import,
+    print_function,
+    unicode_literals,
+    )
+
+str = None
+
+__metaclass__ = type
+__all__ = []
+
+
+from django.db.models import ProtectedError
+from maasserver.models.space import (
+    DEFAULT_SPACE_NAME,
+    Space,
+)
+from maasserver.testing.factory import factory
+from maasserver.testing.testcase import MAASServerTestCase
+from testtools.matchers import MatchesStructure
+from testtools.testcase import ExpectedException
+
+
+class SpaceTest(MAASServerTestCase):
+
+    def test_creates_space(self):
+        name = factory.make_name('name')
+        space = Space(name=name)
+        space.save()
+        space_from_db = Space.objects.get(name=name)
+        self.assertThat(space_from_db, MatchesStructure.byEquality(
+            name=name))
+
+    def test_get_default_space_creates_default_space(self):
+        default_space = Space.objects.get_default_space()
+        self.assertThat(default_space, MatchesStructure.byEquality(
+            id=0, name=DEFAULT_SPACE_NAME))
+
+    def test_get_default_space_is_idempotent(self):
+        default_space = Space.objects.get_default_space()
+        default_space2 = Space.objects.get_default_space()
+        self.assertEqual(default_space.id, default_space2.id)
+
+    def test_is_default_detects_default_space(self):
+        default_space = Space.objects.get_default_space()
+        self.assertTrue(default_space.is_default())
+
+    def test_is_default_detects_non_default_space(self):
+        name = factory.make_name('name')
+        space = factory.make_Space(name=name)
+        self.assertFalse(space.is_default())
+
+    def test_can_be_deleted_if_does_not_contain_subnets(self):
+        name = factory.make_name('name')
+        space = factory.make_Space(name=name)
+        space.delete()
+        self.assertItemsEqual([], Space.objects.filter(name=name))
+
+    def test_cant_be_deleted_if_contains_subnet(self):
+        space = factory.make_Space()
+        factory.make_Subnet(space=space)
+        with ExpectedException(ProtectedError):
+            space.delete()

=== added file 'src/maasserver/models/tests/test_subnet.py'
--- src/maasserver/models/tests/test_subnet.py	1970-01-01 00:00:00 +0000
+++ src/maasserver/models/tests/test_subnet.py	2015-06-22 16:52:47 +0000
@@ -0,0 +1,54 @@
+# Copyright 2015 Canonical Ltd.  This software is licensed under the
+# GNU Affero General Public License version 3 (see the file LICENSE).
+
+"""Tests for the Subnet model."""
+
+from __future__ import (
+    absolute_import,
+    print_function,
+    unicode_literals,
+    )
+
+str = None
+
+__metaclass__ = type
+__all__ = []
+
+
+import random
+
+from django.core.exceptions import ValidationError
+from maasserver.models.subnet import Subnet
+from maasserver.testing.factory import factory
+from maasserver.testing.testcase import MAASServerTestCase
+from testtools.matchers import MatchesStructure
+
+
+class SubnetTest(MAASServerTestCase):
+
+    def test_creates_subnet(self):
+        name = factory.make_name('name')
+        vlan = factory.make_VLAN()
+        space = factory.make_Space()
+        network = factory.make_ip4_or_6_network()
+        cidr = unicode(network.cidr)
+        gateway_ip = factory.pick_ip_in_network(network)
+        dns_servers = [
+            factory.make_ip_address()
+            for _ in range(random.randint(1, 3))]
+        subnet = Subnet(
+            name=name, vlan=vlan, cidr=cidr, gateway_ip=gateway_ip,
+            space=space, dns_servers=dns_servers)
+        subnet.save()
+        subnet_from_db = Subnet.objects.get(name=name)
+        self.assertThat(subnet_from_db, MatchesStructure.byEquality(
+            name=name, vlan=vlan, cidr=cidr, space=space,
+            gateway_ip=gateway_ip, dns_servers=dns_servers))
+
+    def test_validates_gateway_ip(self):
+        error = self.assertRaises(
+            ValidationError, factory.make_Subnet, cidr='192.168.0.0/24',
+            gateway_ip='10.0.0.0')
+        self.assertEqual(
+            {'gateway_ip': ["Gateway IP must be within CIDR range."]},
+            error.message_dict)

=== modified file 'src/maasserver/models/tests/test_vlan.py'
--- src/maasserver/models/tests/test_vlan.py	2015-06-18 10:24:21 +0000
+++ src/maasserver/models/tests/test_vlan.py	2015-06-22 16:52:47 +0000
@@ -26,6 +26,7 @@
 from maasserver.models.nodegroupinterface import NodeGroupInterface
 from maasserver.models.vlan import VLAN
 from maasserver.testing.factory import factory
+from maasserver.testing.orm import reload_object
 from maasserver.testing.testcase import MAASServerTestCase
 from testtools.matchers import MatchesStructure
 from testtools.testcase import ExpectedException
@@ -115,6 +116,14 @@
         self.assertEqual(
             reconnected_interface.vlan, fabric.get_default_vlan())
 
+    def test_subnets_are_reconnected_when_vlan_is_deleted(self):
+        fabric = factory.make_Fabric()
+        vlan = factory.make_VLAN(fabric=fabric)
+        subnet = factory.make_Subnet(vlan=vlan)
+        vlan.delete()
+        self.assertEqual(
+            reload_object(subnet).vlan, fabric.get_default_vlan())
+
 
 class VLANVidValidationTest(MAASServerTestCase):
 

=== modified file 'src/maasserver/models/vlan.py'
--- src/maasserver/models/vlan.py	2015-06-18 10:24:21 +0000
+++ src/maasserver/models/vlan.py	2015-06-22 16:52:47 +0000
@@ -112,6 +112,12 @@
             ngi.vlan = self.fabric.get_default_vlan()
             ngi.save()
 
+    def manage_connected_subnets(self):
+        """Reconnect subnets the default VLAN of the fabric."""
+        for subnet in self.subnet_set.all():
+            subnet.vlan = self.fabric.get_default_vlan()
+            subnet.save()
+
     def delete(self):
         if self.is_fabric_default():
             raise ValidationError(
@@ -119,4 +125,5 @@
                 "it cannot be deleted.")
         self.manage_connected_interfaces()
         self.manage_connected_cluster_interfaces()
+        self.manage_connected_subnets()
         super(VLAN, self).delete()

=== modified file 'src/maasserver/testing/factory.py'
--- src/maasserver/testing/factory.py	2015-06-17 13:11:27 +0000
+++ src/maasserver/testing/factory.py	2015-06-22 16:52:47 +0000
@@ -72,9 +72,11 @@
     Partition,
     PartitionTable,
     PhysicalBlockDevice,
+    Space,
     SSHKey,
     SSLKey,
     StaticIPAddress,
+    Subnet,
     Tag,
     VirtualBlockDevice,
     VLAN,
@@ -102,6 +104,7 @@
 )
 from netaddr import (
     IPAddress,
+    IPNetwork,
     IPRange,
 )
 from provisioningserver.utils.enum import map_enum
@@ -588,6 +591,35 @@
         key.save()
         return key
 
+    def make_Space(self, name=None):
+        if name is None:
+            name = self.make_name('space')
+        space = Space(name=name)
+        space.save()
+        return space
+
+    def make_Subnet(self, name=None, vlan=None, space=None, cidr=None,
+                    gateway_ip=None, dns_servers=None):
+        if name is None:
+            name = factory.make_name('name')
+        if vlan is None:
+            vlan = factory.make_VLAN()
+        if space is None:
+            space = factory.make_Space()
+        if cidr is None:
+            network = factory.make_ip4_or_6_network()
+            cidr = unicode(network.cidr)
+        if gateway_ip is None:
+            gateway_ip = factory.pick_ip_in_network(IPNetwork(cidr))
+        if dns_servers is None:
+            dns_servers = [
+                self.make_ip_address() for _ in range(random.randint(1, 3))]
+        subnet = Subnet(
+            name=name, vlan=vlan, cidr=cidr, gateway_ip=gateway_ip,
+            space=space, dns_servers=dns_servers)
+        subnet.save()
+        return subnet
+
     def make_Fabric(self, name=None):
         if name is None:
             name = self.make_name('fabric')

=== modified file 'src/maasserver/tests/test_fields.py'
--- src/maasserver/tests/test_fields.py	2015-06-17 14:52:20 +0000
+++ src/maasserver/tests/test_fields.py	2015-06-22 16:52:47 +0000
@@ -52,7 +52,6 @@
 )
 from maastesting.djangotestcase import TestModelMixin
 from maastesting.matchers import MockCalledOnceWith
-from netaddr import IPNetwork
 from psycopg2 import OperationalError
 from psycopg2.extensions import ISQLQuote
 
@@ -530,7 +529,7 @@
     def test_stores_cidr(self):
         cidr = '192.0.2.0/24'
         instance = CIDRTestModel.objects.create(cidr=cidr)
-        self.assertEqual(reload_object(instance).cidr, IPNetwork(cidr))
+        self.assertEqual(cidr, reload_object(instance).cidr)
 
     def test_validates_cidr(self):
         cidr = 'invalid-cidr'
@@ -540,5 +539,6 @@
 
     def test_stores_cidr_with_bit_set_in_host_part(self):
         cidr = '192.0.2.1/24'
+        normalized_cidr = '192.0.2.0/24'
         instance = CIDRTestModel.objects.create(cidr=cidr)
-        self.assertEqual(reload_object(instance).cidr, IPNetwork(cidr))
+        self.assertEqual(normalized_cidr, reload_object(instance).cidr)

=== modified file 'src/maastesting/factory.py'
--- src/maastesting/factory.py	2015-06-10 20:01:19 +0000
+++ src/maastesting/factory.py	2015-06-22 16:52:47 +0000
@@ -263,6 +263,13 @@
             slash=slash, but_not=but_not, disjoint_from=disjoint_from,
             random_address_factory=self.make_ipv6_address)
 
+    def make_ip4_or_6_network(self):
+        """Generate a random IPv4 or IPv6 network."""
+        if random.randint(0, 1) == 0:
+            return self.make_ipv4_network()
+        else:
+            return self.make_ipv6_network()
+
     def pick_ip_in_network(self, network, but_not=None):
         if but_not is None:
             but_not = []