Merge lp:~blake-rouse/maas/partition-model into lp:maas/trunk

[Blake Rouse]

Add new partition model.

Adds the data model that will be used to configure the partitions that we be placed on the disk when a node is deployed.

Working towards this new model:

https://docs.google.com/a/canonical.com/document/d/1qWkaJfr1KgwfHSZyIiLKxYVP6u8lW_qXFH1NNJ7ZChU/edit#heading=h.srjthbv7bedy

[Gavin Panella (allenap)]

Looks good, but there are a few things that need to be fixed.

review: Needs Fixing

[lp:~blake-rouse/maas/partition-model]

3633. By Blake Rouse on 2015-03-11

Merged partition-table-model into partition-model.

3634. By Blake Rouse on 2015-03-12

Fix code review.

3635. By Blake Rouse on 2015-03-12

Merged partition-table-model into partition-model.

3636. By Blake Rouse on 2015-03-12

Fix code review.

[Gavin Panella (allenap)]

The fixes look good :)

review: Approve

=== added file 'src/maasserver/migrations/0130_add_partition_model.py'
--- src/maasserver/migrations/0130_add_partition_model.py	1970-01-01 00:00:00 +0000
+++ src/maasserver/migrations/0130_add_partition_model.py	2015-03-12 03:23:40 +0000
@@ -0,0 +1,422 @@
+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 'Partition'
+        db.create_table(u'maasserver_partition', (
+            (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')()),
+            ('partition_table', self.gf('django.db.models.fields.related.ForeignKey')(related_name=u'partitions', to=orm['maasserver.PartitionTable'])),
+            ('uuid', self.gf('django.db.models.fields.CharField')(max_length=36, unique=True, null=True, blank=True)),
+            ('start_offset', self.gf('django.db.models.fields.BigIntegerField')()),
+            ('size', self.gf('django.db.models.fields.BigIntegerField')()),
+            ('bootable', self.gf('django.db.models.fields.BooleanField')(default=False)),
+        ))
+        db.send_create_signal(u'maasserver', ['Partition'])
+
+
+    def backwards(self, orm):
+        # Deleting model 'Partition'
+        db.delete_table(u'maasserver_partition')
+
+
+    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.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'c76af252-c866-11e4-b9cc-bcee7b78dc5b'", '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.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'}),
+            'system_id': ('django.db.models.fields.CharField', [], {'default': "u'node-c76a0bf8-c866-11e4-b9cc-bcee7b78dc5b'", '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': ('django.db.models.fields.CharField', [], {'max_length': '80', 'blank': 'True'}),
+            'status': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            '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', [], {})
+        },
+        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.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', [], {}),
+            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.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.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': '1426130448L'}),
+            '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

=== modified file 'src/maasserver/models/__init__.py'
--- src/maasserver/models/__init__.py	2015-03-12 03:23:40 +0000
+++ src/maasserver/models/__init__.py	2015-03-12 03:23:40 +0000
@@ -35,6 +35,7 @@
     'Node',
     'NodeGroup',
     'NodeGroupInterface',
+    'Partition',
     'PartitionTable',
     'PhysicalBlockDevice',
     'SSHKey',
@@ -80,6 +81,7 @@
     )
 from maasserver.models.nodegroup import NodeGroup
 from maasserver.models.nodegroupinterface import NodeGroupInterface
+from maasserver.models.partition import Partition
 from maasserver.models.partitiontable import PartitionTable
 from maasserver.models.physicalblockdevice import PhysicalBlockDevice
 from maasserver.models.sshkey import SSHKey
@@ -99,7 +101,7 @@
     ComponentError, Config, DHCPLease, DownloadProgress, Event, EventType,
     FileStorage, LargeFile, LicenseKey, StaticIPAddress, MACAddress,
     MACStaticIPAddressLink, Network, NodeGroup, NodeGroupInterface,
-    PartitionTable, SSHKey, Tag, UserProfile, Zone, logger)
+    Partition, PartitionTable, SSHKey, Tag, UserProfile, Zone, logger)
 
 
 # Connect the 'create_user' method to the post save signal of User.

=== added file 'src/maasserver/models/partition.py'
--- src/maasserver/models/partition.py	1970-01-01 00:00:00 +0000
+++ src/maasserver/models/partition.py	2015-03-12 03:23:40 +0000
@@ -0,0 +1,76 @@
+# Copyright 2015 Canonical Ltd.  This software is licensed under the
+# GNU Affero General Public License version 3 (see the file LICENSE).
+
+"""Model for a partition in a partition table."""
+
+from __future__ import (
+    absolute_import,
+    print_function,
+    unicode_literals,
+    )
+
+str = None
+
+__metaclass__ = type
+__all__ = [
+    'Partition',
+    ]
+
+from uuid import uuid4
+
+from django.db.models import (
+    BigIntegerField,
+    BooleanField,
+    CharField,
+    ForeignKey,
+    )
+from maasserver import DefaultMeta
+from maasserver.enum import PARTITION_TABLE_TYPE
+from maasserver.models.cleansave import CleanSave
+from maasserver.models.partitiontable import PartitionTable
+from maasserver.models.timestampedmodel import TimestampedModel
+
+
+class Partition(CleanSave, TimestampedModel):
+    """A partition in a partition table.
+
+    :ivar partition_table: `PartitionTable` this partition belongs to.
+    :ivar uuid: UUID of the partition if it's part of a GPT partition.
+    :ivar start_offset: Offset in bytes the partition is from the start of
+        the disk.
+    :ivar size: Size of the partition in bytes.
+    :ivar bootable: Whether the partition is set as bootable.
+    """
+
+    class Meta(DefaultMeta):
+        """Needed for South to recognize this model."""
+
+    partition_table = ForeignKey(
+        PartitionTable, null=False, blank=False, related_name="partitions")
+
+    uuid = CharField(
+        max_length=36, unique=True, null=True, blank=True)
+
+    start_offset = BigIntegerField(null=False)
+
+    size = BigIntegerField(null=False)
+
+    bootable = BooleanField(default=False)
+
+    def get_node(self):
+        """`Node` this partition belongs to."""
+        return self.partition_table.get_node()
+
+    def get_block_size(self):
+        """Block size of partition."""
+        return self.partition_table.get_block_size()
+
+    def save(self, *args, **kwargs):
+        """Save partition."""
+        if (self.partition_table.table_type == PARTITION_TABLE_TYPE.GPT and
+                not self.uuid):
+            # Partition is part of a GPT partition table and doesn't have
+            # a UUID set. Set the UUID so MAAS will know the UUID of the
+            # partition on the created machine.
+            self.uuid = uuid4()
+        return super(Partition, self).save(*args, **kwargs)

=== added file 'src/maasserver/models/tests/test_partition.py'
--- src/maasserver/models/tests/test_partition.py	1970-01-01 00:00:00 +0000
+++ src/maasserver/models/tests/test_partition.py	2015-03-12 03:23:40 +0000
@@ -0,0 +1,56 @@
+# Copyright 2015 Canonical Ltd.  This software is licensed under the
+# GNU Affero General Public License version 3 (see the file LICENSE).
+
+"""Tests for `Partition`."""
+
+from __future__ import (
+    absolute_import,
+    print_function,
+    unicode_literals,
+    )
+
+str = None
+
+__metaclass__ = type
+__all__ = []
+
+from uuid import uuid4
+
+from maasserver.enum import PARTITION_TABLE_TYPE
+from maasserver.testing.factory import factory
+from maasserver.testing.testcase import MAASServerTestCase
+
+
+class TestPartition(MAASServerTestCase):
+    """Tests for the `Partition` model."""
+
+    def test_get_node_returns_partition_table_node(self):
+        partition = factory.make_Partition()
+        self.assertEquals(
+            partition.partition_table.get_node(), partition.get_node())
+
+    def test_get_block_size_returns_partition_table_block_size(self):
+        partition = factory.make_Partition()
+        self.assertEquals(
+            partition.partition_table.get_block_size(),
+            partition.get_block_size())
+
+    def test_doesnt_set_uuid_if_partition_table_is_MBR(self):
+        table = factory.make_PartitionTable(
+            table_type=PARTITION_TABLE_TYPE.MBR)
+        partition = factory.make_Partition(partition_table=table)
+        self.assertIsNone(partition.uuid)
+
+    def test_set_uuid_if_partition_table_is_GPT(self):
+        table = factory.make_PartitionTable(
+            table_type=PARTITION_TABLE_TYPE.GPT)
+        partition = factory.make_Partition(partition_table=table)
+        self.assertIsNotNone(partition.uuid)
+
+    def test_save_doesnt_overwrite_uuid(self):
+        uuid = uuid4()
+        table = factory.make_PartitionTable(
+            table_type=PARTITION_TABLE_TYPE.GPT)
+        partition = factory.make_Partition(partition_table=table, uuid=uuid)
+        partition.save()
+        self.assertEquals('%s' % uuid, partition.uuid)

=== modified file 'src/maasserver/testing/factory.py'
--- src/maasserver/testing/factory.py	2015-03-12 03:23:40 +0000
+++ src/maasserver/testing/factory.py	2015-03-12 03:23:40 +0000
@@ -61,6 +61,7 @@
     Node,
     NodeGroup,
     NodeGroupInterface,
+    Partition,
     PartitionTable,
     PhysicalBlockDevice,
     SSHKey,
@@ -1091,6 +1092,21 @@
         return PartitionTable.objects.create(
             table_type=table_type, block_device=block_device)
 
+    def make_Partition(
+            self, partition_table=None, uuid=None, start_offset=None,
+            size=None, bootable=None):
+        if partition_table is None:
+            partition_table = self.make_PartitionTable()
+        if start_offset is None:
+            start_offset = random.randint(0, partition_table.get_size() - 2)
+        if size is None:
+            size = random.randint(1, partition_table.get_size() - start_offset)
+        if bootable is None:
+            bootable = random.choice([True, False])
+        return Partition.objects.create(
+            partition_table=partition_table, uuid=uuid,
+            start_offset=start_offset, size=size, bootable=bootable)
+
 
 # Create factory singleton.
 factory = Factory()