#!/usr/bin/python
# (c) 2017, NetApp, Inc
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'certified'}
DOCUMENTATION = '''
module: na_ontap_lun
short_description: NetApp ONTAP manage LUNs
extends_documentation_fragment:
- netapp.na_ontap
version_added: '2.6'
author: NetApp Ansible Team (@carchi8py) <[email protected]>
description:
- Create, destroy, resize LUNs on NetApp ONTAP.
options:
state:
description:
- Whether the specified LUN should exist or not.
choices: ['present', 'absent']
default: present
name:
description:
- The name of the LUN to manage.
required: true
flexvol_name:
description:
- The name of the FlexVol the LUN should exist on.
required: true
size:
description:
- The size of the LUN in C(size_unit).
- Required when C(state=present).
size_unit:
description:
- The unit used to interpret the size parameter.
choices: ['bytes', 'b', 'kb', 'mb', 'gb', 'tb', 'pb', 'eb', 'zb', 'yb']
default: 'gb'
force_resize:
description:
Forcibly reduce the size. This is required for reducing the size of the LUN to avoid accidentally
reducing the LUN size.
type: bool
default: false
force_remove:
description:
- If "true", override checks that prevent a LUN from being destroyed if it is online and mapped.
- If "false", destroying an online and mapped LUN will fail.
type: bool
default: false
force_remove_fenced:
description:
- If "true", override checks that prevent a LUN from being destroyed while it is fenced.
- If "false", attempting to destroy a fenced LUN will fail.
- The default if not specified is "false". This field is available in Data ONTAP 8.2 and later.
type: bool
default: false
vserver:
required: true
description:
- The name of the vserver to use.
ostype:
description:
- The os type for the LUN.
default: 'image'
space_reserve:
description:
- This can be set to "false" which will create a LUN without any space being reserved.
type: bool
default: True
space_allocation:
description:
- This enables support for the SCSI Thin Provisioning features. If the Host and file system do
not support this do not enable it.
type: bool
default: False
version_added: '2.7'
'''
EXAMPLES = """
- name: Create LUN
na_ontap_lun:
state: present
name: ansibleLUN
flexvol_name: ansibleVolume
vserver: ansibleVServer
size: 5
size_unit: mb
ostype: linux
space_reserve: True
hostname: "{{ netapp_hostname }}"
username: "{{ netapp_username }}"
password: "{{ netapp_password }}"
- name: Resize LUN
na_ontap_lun:
state: present
name: ansibleLUN
force_resize: True
flexvol_name: ansibleVolume
vserver: ansibleVServer
size: 5
size_unit: gb
hostname: "{{ netapp_hostname }}"
username: "{{ netapp_username }}"
password: "{{ netapp_password }}"
"""
RETURN = """
"""
import traceback
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils._text import to_native
import ansible.module_utils.netapp as netapp_utils
HAS_NETAPP_LIB = netapp_utils.has_netapp_lib()
class NetAppOntapLUN(object):
def __init__(self):
self._size_unit_map = dict(
bytes=1,
b=1,
kb=1024,
mb=1024 ** 2,
gb=1024 ** 3,
tb=1024 ** 4,
pb=1024 ** 5,
eb=1024 ** 6,
zb=1024 ** 7,
yb=1024 ** 8
)
self.argument_spec = netapp_utils.na_ontap_host_argument_spec()
self.argument_spec.update(dict(
state=dict(required=False, choices=['present', 'absent'], default='present'),
name=dict(required=True, type='str'),
size=dict(type='int'),
size_unit=dict(default='gb',
choices=['bytes', 'b', 'kb', 'mb', 'gb', 'tb',
'pb', 'eb', 'zb', 'yb'], type='str'),
force_resize=dict(default=False, type='bool'),
force_remove=dict(default=False, type='bool'),
force_remove_fenced=dict(default=False, type='bool'),
flexvol_name=dict(required=True, type='str'),
vserver=dict(required=True, type='str'),
ostype=dict(required=False, type='str', default='image'),
space_reserve=dict(required=False, type='bool', default=True),
space_allocation=dict(required=False, type='bool', default=False),
))
self.module = AnsibleModule(
argument_spec=self.argument_spec,
required_if=[
('state', 'present', ['size'])
],
supports_check_mode=True
)
parameters = self.module.params
# set up state variables
self.state = parameters['state']
self.name = parameters['name']
self.size_unit = parameters['size_unit']
if parameters['size'] is not None:
self.size = parameters['size'] * self._size_unit_map[self.size_unit]
else:
self.size = None
self.force_resize = parameters['force_resize']
self.force_remove = parameters['force_remove']
self.force_remove_fenced = parameters['force_remove_fenced']
self.flexvol_name = parameters['flexvol_name']
self.vserver = parameters['vserver']
self.ostype = parameters['ostype']
self.space_reserve = parameters['space_reserve']
self.space_allocation = parameters['space_allocation']
if HAS_NETAPP_LIB is False:
self.module.fail_json(msg="the python NetApp-Lib module is required")
else:
self.server = netapp_utils.setup_na_ontap_zapi(module=self.module, vserver=self.vserver)
def get_lun(self):
"""
Return details about the LUN
:return: Details about the lun
:rtype: dict
"""
luns = []
tag = None
while True:
lun_info = netapp_utils.zapi.NaElement('lun-get-iter')
if tag:
lun_info.add_new_child('tag', tag, True)
query_details = netapp_utils.zapi.NaElement('lun-info')
query_details.add_new_child('vserver', self.vserver)
query_details.add_new_child('volume', self.flexvol_name)
query = netapp_utils.zapi.NaElement('query')
query.add_child_elem(query_details)
lun_info.add_child_elem(query)
result = self.server.invoke_successfully(lun_info, True)
if result.get_child_by_name('num-records') and int(result.get_child_content('num-records')) >= 1:
attr_list = result.get_child_by_name('attributes-list')
luns.extend(attr_list.get_children())
tag = result.get_child_content('next-tag')
if tag is None:
break
# The LUNs have been extracted.
# Find the specified lun and extract details.
return_value = None
for lun in luns:
path = lun.get_child_content('path')
_rest, _splitter, found_name = path.rpartition('/')
if found_name == self.name:
size = lun.get_child_content('size')
# Find out if the lun is attached
attached_to = None
lun_id = None
if lun.get_child_content('mapped') == 'true':
lun_map_list = netapp_utils.zapi.NaElement.create_node_with_children(
'lun-map-list-info', **{'path': path})
result = self.server.invoke_successfully(
lun_map_list, enable_tunneling=True)
igroups = result.get_child_by_name('initiator-groups')
if igroups:
for igroup_info in igroups.get_children():
igroup = igroup_info.get_child_content(
'initiator-group-name')
attached_to = igroup
lun_id = igroup_info.get_child_content('lun-id')
return_value = {
'name': found_name,
'size': size,
'attached_to': attached_to,
'lun_id': lun_id
}
else:
continue
return return_value
def create_lun(self):
"""
Create LUN with requested name and size
"""
path = '/vol/%s/%s' % (self.flexvol_name, self.name)
lun_create = netapp_utils.zapi.NaElement.create_node_with_children(
'lun-create-by-size', **{'path': path,
'size': str(self.size),
'ostype': self.ostype,
'space-reservation-enabled': str(self.space_reserve),
'space-allocation-enabled': str(self.space_allocation)})
try:
self.server.invoke_successfully(lun_create, enable_tunneling=True)
except netapp_utils.zapi.NaApiError as e:
self.module.fail_json(msg="Error provisioning lun %s of size %s: %s" % (self.name, self.size, to_native(e)),
exception=traceback.format_exc())
def delete_lun(self):
"""
Delete requested LUN
"""
path = '/vol/%s/%s' % (self.flexvol_name, self.name)
lun_delete = netapp_utils.zapi.NaElement.create_node_with_children(
'lun-destroy', **{'path': path,
'force': str(self.force_remove),
'destroy-fenced-lun':
str(self.force_remove_fenced)})
try:
self.server.invoke_successfully(lun_delete, enable_tunneling=True)
except netapp_utils.zapi.NaApiError as e:
self.module.fail_json(msg="Error deleting lun %s: %s" % (path, to_native(e)),
exception=traceback.format_exc())
def resize_lun(self):
"""
Resize requested LUN.
:return: True if LUN was actually re-sized, false otherwise.
:rtype: bool
"""
path = '/vol/%s/%s' % (self.flexvol_name, self.name)
lun_resize = netapp_utils.zapi.NaElement.create_node_with_children(
'lun-resize', **{'path': path,
'size': str(self.size),
'force': str(self.force_resize)})
try:
self.server.invoke_successfully(lun_resize, enable_tunneling=True)
except netapp_utils.zapi.NaApiError as e:
if to_native(e.code) == "9042":
# Error 9042 denotes the new LUN size being the same as the
# old LUN size. This happens when there's barely any difference
# in the two sizes. For example, from 8388608 bytes to
# 8194304 bytes. This should go away if/when the default size
# requested/reported to/from the controller is changed to a
# larger unit (MB/GB/TB).
return False
else:
self.module.fail_json(msg="Error resizing lun %s: %s" % (path, to_native(e)),
exception=traceback.format_exc())
return True
def apply(self):
property_changed = False
size_changed = False
lun_exists = False
netapp_utils.ems_log_event("na_ontap_lun", self.server)
lun_detail = self.get_lun()
if lun_detail:
lun_exists = True
current_size = lun_detail['size']
if self.state == 'absent':
property_changed = True
elif self.state == 'present':
if not int(current_size) == self.size:
size_changed = True
property_changed = True
else:
if self.state == 'present':
property_changed = True
if property_changed:
if self.module.check_mode:
pass
else:
if self.state == 'present':
if not lun_exists:
self.create_lun()
else:
if size_changed:
# Ensure that size was actually changed. Please
# read notes in 'resize_lun' function for details.
size_changed = self.resize_lun()
if not size_changed:
property_changed = False
elif self.state == 'absent':
self.delete_lun()
changed = property_changed or size_changed
# TODO: include other details about the lun (size, etc.)
self.module.exit_json(changed=changed)
def main():
v = NetAppOntapLUN()
v.apply()
if __name__ == '__main__':
main()
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