def create_logical_volume(self, params):
"""Create a logical volume."""
# Only admin users can perform delete.
if not reload_object(self.user).is_superuser:
raise HandlerPermissionError()
node = self.get_object(params)
volume_group = VolumeGroup.objects.get(id=params['volume_group_id'])
if volume_group.get_node() != node:
raise VolumeGroup.DoesNotExist()
form = CreateLogicalVolumeForm(volume_group, {
'name': params['name'],
'size': params['size'],
})
if not form.is_valid():
raise HandlerError(form.errors)
else:
logical_volume = form.save()
self._update_obj_tags(logical_volume, params)
if 'fstype' in params:
self.update_blockdevice_filesystem(logical_volume,
params.get("fstype"),
params.get("mount_point"),
params.get("mount_options"))
def test_is_not_valid_if_invalid_uuid(self):
volume_group = factory.make_VolumeGroup()
name = factory.make_name("lv")
data = {
'name': name,
'uuid': factory.make_string(size=32),
'size': volume_group.get_size() - 1,
}
form = CreateLogicalVolumeForm(volume_group, data=data)
self.assertFalse(form.is_valid(),
"Should be invalid because of an invalid uuid.")
self.assertEqual({'uuid': ["Enter a valid value."]}, form._errors)
def test_is_not_valid_if_size_less_than_minimum_block_size(self):
volume_group = factory.make_VolumeGroup()
name = factory.make_name("lv")
data = {"name": name, "size": MIN_BLOCK_DEVICE_SIZE - 1}
form = CreateLogicalVolumeForm(volume_group, data=data)
self.assertFalse(form.is_valid(),
"Should be invalid because of an invalid size.")
self.assertEqual(
{
"size": [
"Ensure this value is greater than or equal to %s." %
MIN_BLOCK_DEVICE_SIZE
]
},
form._errors,
)
def create_logical_volume(self, request, system_id, id):
"""@description-title Create a logical volume
@description Create a logical volume in the volume group with the given
id on the machine with the given system_id.
@param (string) "{system_id}" [required=true] The machine system_id
containing the volume group.
@param (int) "{id}" [required=true] The id of the volume group.
@param (string) "name" [required=true] Name of the logical volume.
@param (string) "uuid" [required=false] (optional) UUID of the logical
volume.
@param (string) "size" [required=true] Size of the logical volume. Must
be larger than or equal to 4,194,304 bytes. E.g. ``4194304``.
@success (http-status-code) "server-success" 200
@success (json) "success-json" A JSON object containing the requested
volume group.
@success-example "success-json" [exkey=vol-groups-create-log-vol]
placeholder text
@error (http-status-code) "404" 404
@error (content) "not-found" The requested machine is not found.
@error-example "not-found"
Not Found
@error (http-status-code) "409" 409
@error (content) "not-ready" The requested machine is not ready.
"""
volume_group = VolumeGroup.objects.get_object_or_404(
system_id, id, request.user, NodePermission.admin
)
node = volume_group.get_node()
if node.status != NODE_STATUS.READY:
raise NodeStateViolation(
"Cannot create logical volume because the machine is not "
"Ready."
)
form = CreateLogicalVolumeForm(volume_group, data=request.data)
if not form.is_valid():
raise MAASAPIValidationError(form.errors)
else:
return form.save()
def test_creates_logical_volume(self):
volume_group = factory.make_VolumeGroup()
name = factory.make_name("lv")
vguuid = "%s" % uuid.uuid4()
size = random.randint(MIN_BLOCK_DEVICE_SIZE, volume_group.get_size())
data = {"name": name, "uuid": vguuid, "size": size}
form = CreateLogicalVolumeForm(volume_group, data=data)
self.assertTrue(form.is_valid(), form._errors)
logical_volume = form.save()
expected_size = round_size_to_nearest_block(
size, PARTITION_ALIGNMENT_SIZE, False
)
self.assertThat(
logical_volume,
MatchesStructure.byEquality(
name=name, uuid=vguuid, size=expected_size
),
)
def test_is_not_valid_if_free_space_less_than_min_size(self):
volume_group = factory.make_VolumeGroup()
volume_group.create_logical_volume(factory.make_name("lv"),
size=volume_group.get_size())
name = factory.make_name("lv")
data = {"name": name, "size": MIN_BLOCK_DEVICE_SIZE}
form = CreateLogicalVolumeForm(volume_group, data=data)
self.assertFalse(form.is_valid(),
"Should be invalid because of an no free space.")
self.assertEqual(
{
"__all__": [
"Volume group (%s) cannot hold any more logical volumes, "
"because it doesn't have enough free space." %
(volume_group.name)
]
},
form._errors,
)
def test_is_not_valid_if_size_greater_than_free_space(self):
volume_group = factory.make_VolumeGroup()
volume_group.create_logical_volume(factory.make_name("lv"),
size=volume_group.get_size() -
MIN_BLOCK_DEVICE_SIZE - 1)
name = factory.make_name("lv")
free_space = volume_group.get_lvm_free_space()
data = {
'name': name,
'size': free_space + 2,
}
form = CreateLogicalVolumeForm(volume_group, data=data)
self.assertFalse(form.is_valid(),
"Should be invalid because of an invalid size.")
self.assertEqual(
{
'size': [
"Ensure this value is less than or equal to %s." %
(volume_group.get_lvm_free_space()),
]
}, form._errors)
def create_logical_volume(self, params):
"""Create a logical volume."""
node = self._get_node_or_permission_error(
params, permission=self._meta.edit_permission)
volume_group = VolumeGroup.objects.get(id=params['volume_group_id'])
if volume_group.get_node() != node:
raise VolumeGroup.DoesNotExist()
form = CreateLogicalVolumeForm(
volume_group, {
'name': params['name'],
'size': params['size'],
})
if not form.is_valid():
raise HandlerError(form.errors)
else:
logical_volume = form.save()
self._update_obj_tags(logical_volume, params)
if 'fstype' in params:
self.update_blockdevice_filesystem(
logical_volume, params.get("fstype"),
params.get("mount_point"), params.get("mount_options"))
def create_logical_volume(self, request, system_id, id):
"""Create a logical volume in the volume group.
:param name: Name of the logical volume.
:param uuid: (optional) UUID of the logical volume.
:param size: Size of the logical volume.
Returns 404 if the machine or volume group is not found.
Returns 409 if the machine is not Ready.
"""
volume_group = VolumeGroup.objects.get_object_or_404(
system_id, id, request.user, NodePermission.admin)
node = volume_group.get_node()
if node.status != NODE_STATUS.READY:
raise NodeStateViolation(
"Cannot create logical volume because the machine is not "
"Ready.")
form = CreateLogicalVolumeForm(volume_group, data=request.data)
if not form.is_valid():
raise MAASAPIValidationError(form.errors)
else:
return form.save()
def test_requires_no_fields(self):
volume_group = factory.make_VolumeGroup()
form = CreateLogicalVolumeForm(volume_group, data={})
self.assertFalse(form.is_valid(), form.errors)
self.assertItemsEqual(['name', 'size'], form.errors.keys())