lvg module for managing LVM volume groups
This commit is contained in:
Alexander Bulimov
parent
84527b1d31
commit
12b10dabbc
1 changed files with 145 additions and 0 deletions
145
lvg
Executable file
145
lvg
Executable file
|
|
@ -0,0 +1,145 @@
|
|||
#!/usr/bin/python
|
||||
# -*- coding: utf-8 -*-
|
||||
|
||||
# (c) 2013, Alexander Bulimov <lazywolf0@gmail.com>
|
||||
# based on lvol module by Jeroen Hoekx <jeroen.hoekx@dsquare.be>
|
||||
#
|
||||
# This file is part of Ansible
|
||||
#
|
||||
# Ansible is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# Ansible is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
DOCUMENTATION = '''
|
||||
---
|
||||
author: Alexander Bulimov
|
||||
module: lvg
|
||||
short_description: Configure LVM volume groups
|
||||
description:
|
||||
- This module creates or removes volume groups.
|
||||
version_added: "1.1"
|
||||
options:
|
||||
vg:
|
||||
description:
|
||||
- The name of the volume group.
|
||||
required: true
|
||||
dev:
|
||||
description:
|
||||
- List of comma-separated devices to use in this volume group.
|
||||
required: true
|
||||
state:
|
||||
choices: [ "present", "absent" ]
|
||||
default: present
|
||||
description:
|
||||
- Control if the volume group exists.
|
||||
required: false
|
||||
force:
|
||||
choices: [ "yes", "no" ]
|
||||
default: no
|
||||
description:
|
||||
- If yes, allows to remove volume group with logical volumes.
|
||||
required: false
|
||||
examples:
|
||||
- description: Create a volume group on top of /dev/sda1.
|
||||
code: lvg vg=vg.services dev=/dev/sda1
|
||||
- description: Create a volume group on top of /dev/sdb1 and /dev/sdc5.
|
||||
code: lvg vg=vg.services dev=/dev/sdb1,/dev/sdc5
|
||||
- description: Remove a volume group with name vg.services.
|
||||
code: lvg vg=vg.services state=absent
|
||||
notes:
|
||||
- module does not check device list for already present volume group
|
||||
'''
|
||||
|
||||
def parse_vgs(data):
|
||||
vgs = []
|
||||
for line in data.splitlines():
|
||||
parts = line.strip().split(';')
|
||||
vgs.append({
|
||||
'name': parts[0],
|
||||
'pv_count': int(parts[1]),
|
||||
'lv_count': int(parts[2]),
|
||||
})
|
||||
return vgs
|
||||
|
||||
def main():
|
||||
module = AnsibleModule(
|
||||
argument_spec = dict(
|
||||
vg=dict(required=True),
|
||||
dev=dict(),
|
||||
state=dict(choices=["absent", "present"], default='present'),
|
||||
force=dict(choices=["yes", "no"], default='no'),
|
||||
),
|
||||
supports_check_mode=True,
|
||||
)
|
||||
|
||||
vg = module.params['vg']
|
||||
if module.params['dev']:
|
||||
dev = module.params['dev'].replace(',',' ')
|
||||
dev_list = module.params['dev'].split(',')
|
||||
state = module.params['state']
|
||||
force = module.params['force']
|
||||
|
||||
if state=='present' and not dev:
|
||||
module.fail_json(msg="No dev given.")
|
||||
|
||||
if state=='present':
|
||||
for test_dev in dev_list:
|
||||
if not os.path.exists(test_dev):
|
||||
module.fail_json(msg="No dev %s found."%test_dev)
|
||||
|
||||
rc,current_vgs,err = module.run_command("vgs --noheadings -o vg_name,pv_count,lv_count --separator ';'")
|
||||
|
||||
if rc != 0:
|
||||
module.fail_json(msg="Failed creating volume group %s."%vg, rc=rc, err=err)
|
||||
|
||||
changed = False
|
||||
|
||||
vgs = parse_vgs(current_vgs)
|
||||
|
||||
for test_vg in vgs:
|
||||
if test_vg['name'] == vg:
|
||||
this_vg = test_vg
|
||||
break
|
||||
else:
|
||||
this_vg = None
|
||||
|
||||
if this_vg is None:
|
||||
if state == 'present':
|
||||
### create VG
|
||||
if module.check_mode:
|
||||
changed = True
|
||||
else:
|
||||
rc,_,err = module.run_command("vgcreate %s %s"%(vg, dev))
|
||||
if rc == 0:
|
||||
changed = True
|
||||
else:
|
||||
module.fail_json(msg="Creating volume group '%s' failed"%(vg), rc=rc, err=err)
|
||||
else:
|
||||
if state == 'absent':
|
||||
if module.check_mode:
|
||||
module.exit_json(changed=True)
|
||||
else:
|
||||
if this_vg['lv_count'] == 0 or force == "yes":
|
||||
### remove VG
|
||||
rc,_,err = module.run_command("vgremove --force %s"%(vg))
|
||||
if rc == 0:
|
||||
module.exit_json(changed=True)
|
||||
else:
|
||||
module.fail_json(msg="Failed to remove volume group %s"%(vg),rc=rc, err=err)
|
||||
else:
|
||||
module.fail_json(msg="Refuse to remove non-empty volume group %s without force=yes"%(vg))
|
||||
|
||||
module.exit_json(changed=changed)
|
||||
|
||||
# this is magic, see lib/ansible/module_common.py
|
||||
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
|
||||
main()
|
||||
Loading…
Reference in a new issue