def test_remove_snapshots(self):
"""
Validates whether the remove_snapshots call works as expected. Due to openvstorage/framework#1534
it needs to handle some backwards compatibiltiy.
"""
structure = DalHelper.build_dal_structure({
'vpools': [1],
'storagerouters': [1],
'storagedrivers':
[(1, 1, 1)], # (<id>, <vpool_id>, <storagerouter_id>)
'mds_services': [(1, 1)]
} # (<id>, <storagedriver_id>)
)
storagedriver = structure['storagedrivers'][1]
vdisk = VDisk(
VDiskController.create_new(volume_name='vdisk_1',
volume_size=1024**4,
storagedriver_guid=storagedriver.guid))
snapshots = []
for i in xrange(10):
metadata = {
'label': 'label{0}'.format(i),
'timestamp': int(time.time()),
'is_sticky': False,
'in_backend': True,
'is_automatic': True,
'is_consistent': True
}
snapshots.append(
VDiskController.create_snapshot(vdisk_guid=vdisk.guid,
metadata=metadata))
vdisk.invalidate_dynamics(['snapshots', 'snapshot_ids'])
self.assertEqual(len(vdisk.snapshots), 10)
self.assertEqual(len(vdisk.snapshot_ids), 10)
snapshot_id = snapshots[0]
# Old format
results = VDiskController.delete_snapshots({vdisk.guid: snapshot_id})
expected = {vdisk.guid: [True, snapshot_id]}
self.assertDictEqual(results, expected)
self.assertEqual(len(vdisk.snapshots), 9)
self.assertEqual(len(vdisk.snapshot_ids), 9)
results = VDiskController.delete_snapshots({vdisk.guid: snapshot_id})
expected = {vdisk.guid: [False, results[vdisk.guid][1]]}
self.assertDictEqual(results, expected)
self.assertRegexpMatches(results[vdisk.guid][1],
'^Snapshot (.*?) does not belong to vDisk')
self.assertEqual(len(vdisk.snapshots), 9)
self.assertEqual(len(vdisk.snapshot_ids), 9)
results = VDiskController.delete_snapshots({'foo': snapshot_id})
expected = {'foo': [False, results['foo'][1]]}
self.assertDictEqual(results, expected)
self.assertRegexpMatches(results['foo'][1],
'VDisk with guid (.*?) could not be found')
# New format
snapshot_id1 = snapshots[1]
snapshot_id2 = snapshots[2]
results = VDiskController.delete_snapshots(
{vdisk.guid: [snapshot_id1, snapshot_id2]})
expected = {
vdisk.guid: {
'success': True,
'error': None,
'results': {
snapshot_id1: [True, snapshot_id1],
snapshot_id2: [True, snapshot_id2]
}
}
}
self.assertDictEqual(results, expected)
self.assertEqual(len(vdisk.snapshots), 7)
self.assertEqual(len(vdisk.snapshot_ids), 7)
snapshot_id2 = snapshots[3]
results = VDiskController.delete_snapshots(
{vdisk.guid: [snapshot_id1, snapshot_id2]})
expected = {
vdisk.guid: {
'success': False,
'error': results[vdisk.guid]['error'],
'results': {
snapshot_id1:
[False, results[vdisk.guid]['results'][snapshot_id1][1]],
snapshot_id2: [True, snapshot_id2]
}
}
}
self.assertDictEqual(results, expected)
self.assertEquals(results[vdisk.guid]['error'],
'One or more snapshots could not be removed')
self.assertRegexpMatches(
results[vdisk.guid]['results'][snapshot_id1][1],
'^Snapshot (.*?) does not belong to vDisk')
self.assertEqual(len(vdisk.snapshots), 6)
self.assertEqual(len(vdisk.snapshot_ids), 6)
results = VDiskController.delete_snapshots({'foo': [snapshot_id1]})
expected = {
'foo': {
'success': False,
'error': results['foo']['error'],
'results': {}
}
}
self.assertDictEqual(results, expected)
self.assertRegexpMatches(results['foo']['error'],
'VDisk with guid (.*?) could not be found')
snapshot_id = snapshots[4]
VDiskController.clone(vdisk.guid, 'clone', snapshot_id)
results = VDiskController.delete_snapshots({vdisk.guid: [snapshot_id]})
expected = {
vdisk.guid: {
'success': False,
'error': results[vdisk.guid]['error'],
'results': {
snapshot_id:
[False, results[vdisk.guid]['results'][snapshot_id][1]]
}
}
}
self.assertDictEqual(results, expected)
self.assertEquals(results[vdisk.guid]['error'],
'One or more snapshots could not be removed')
self.assertRegexpMatches(
results[vdisk.guid]['results'][snapshot_id][1],
'^Snapshot (.*?) has [0-9]+ volume(.?) cloned from it, cannot remove$'
)
