607 lines
21 KiB
Python
607 lines
21 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# Copyright: (c) 2013, Jeroen Hoekx <jeroen.hoekx@dsquare.be>, Alexander Bulimov <lazywolf0@gmail.com>
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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DOCUMENTATION = '''
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---
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author:
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- Jeroen Hoekx (@jhoekx)
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- Alexander Bulimov (@abulimov)
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- Raoul Baudach (@unkaputtbar112)
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- Ziga Kern (@zigaSRC)
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module: lvol
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short_description: Configure LVM logical volumes
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description:
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- This module creates, removes or resizes logical volumes.
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options:
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vg:
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type: str
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required: true
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description:
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- The volume group this logical volume is part of.
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lv:
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type: str
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description:
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- The name of the logical volume.
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size:
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type: str
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description:
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- The size of the logical volume, according to lvcreate(8) --size, by
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default in megabytes or optionally with one of [bBsSkKmMgGtTpPeE] units; or
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according to lvcreate(8) --extents as a percentage of [VG|PVS|FREE];
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Float values must begin with a digit.
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- When resizing, apart from specifying an absolute size you may, according to
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lvextend(8)|lvreduce(8) C(--size), specify the amount to extend the logical volume with
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the prefix C(+) or the amount to reduce the logical volume by with prefix C(-).
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- Resizing using C(+) or C(-) was not supported prior to community.general 3.0.0.
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- Please note that when using C(+) or C(-), the module is B(not idempotent).
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state:
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type: str
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description:
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- Control if the logical volume exists. If C(present) and the
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volume does not already exist then the C(size) option is required.
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choices: [ absent, present ]
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default: present
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active:
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description:
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- Whether the volume is active and visible to the host.
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type: bool
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default: 'yes'
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force:
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description:
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- Shrink or remove operations of volumes requires this switch. Ensures that
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that filesystems get never corrupted/destroyed by mistake.
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type: bool
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default: 'no'
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opts:
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type: str
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description:
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- Free-form options to be passed to the lvcreate command.
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snapshot:
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type: str
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description:
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- The name of the snapshot volume
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pvs:
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type: str
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description:
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- Comma separated list of physical volumes (e.g. /dev/sda,/dev/sdb).
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thinpool:
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type: str
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description:
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- The thin pool volume name. When you want to create a thin provisioned volume, specify a thin pool volume name.
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shrink:
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description:
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- Shrink if current size is higher than size requested.
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type: bool
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default: 'yes'
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resizefs:
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description:
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- Resize the underlying filesystem together with the logical volume.
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- Supported for C(ext2), C(ext3), C(ext4), C(reiserfs) and C(XFS) filesystems.
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Attempts to resize other filesystem types will fail.
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type: bool
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default: 'no'
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notes:
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- You must specify lv (when managing the state of logical volumes) or thinpool (when managing a thin provisioned volume).
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'''
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EXAMPLES = '''
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- name: Create a logical volume of 512m
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community.general.lvol:
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vg: firefly
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lv: test
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size: 512
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- name: Create a logical volume of 512m with disks /dev/sda and /dev/sdb
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community.general.lvol:
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vg: firefly
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lv: test
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size: 512
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pvs: /dev/sda,/dev/sdb
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- name: Create cache pool logical volume
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community.general.lvol:
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vg: firefly
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lv: lvcache
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size: 512m
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opts: --type cache-pool
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- name: Create a logical volume of 512g.
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community.general.lvol:
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vg: firefly
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lv: test
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size: 512g
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- name: Create a logical volume the size of all remaining space in the volume group
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community.general.lvol:
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vg: firefly
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lv: test
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size: 100%FREE
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- name: Create a logical volume with special options
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community.general.lvol:
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vg: firefly
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lv: test
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size: 512g
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opts: -r 16
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- name: Extend the logical volume to 1024m.
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community.general.lvol:
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vg: firefly
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lv: test
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size: 1024
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- name: Extend the logical volume to consume all remaining space in the volume group
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community.general.lvol:
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vg: firefly
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lv: test
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size: +100%FREE
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- name: Extend the logical volume by given space
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community.general.lvol:
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vg: firefly
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lv: test
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size: +512M
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- name: Extend the logical volume to take all remaining space of the PVs and resize the underlying filesystem
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community.general.lvol:
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vg: firefly
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lv: test
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size: 100%PVS
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resizefs: true
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- name: Resize the logical volume to % of VG
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community.general.lvol:
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vg: firefly
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lv: test
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size: 80%VG
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force: yes
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- name: Reduce the logical volume to 512m
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community.general.lvol:
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vg: firefly
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lv: test
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size: 512
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force: yes
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- name: Reduce the logical volume by given space
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community.general.lvol:
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vg: firefly
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lv: test
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size: -512M
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force: yes
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- name: Set the logical volume to 512m and do not try to shrink if size is lower than current one
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community.general.lvol:
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vg: firefly
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lv: test
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size: 512
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shrink: no
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- name: Remove the logical volume.
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community.general.lvol:
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vg: firefly
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lv: test
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state: absent
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force: yes
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- name: Create a snapshot volume of the test logical volume.
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community.general.lvol:
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vg: firefly
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lv: test
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snapshot: snap1
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size: 100m
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- name: Deactivate a logical volume
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community.general.lvol:
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vg: firefly
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lv: test
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active: false
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- name: Create a deactivated logical volume
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community.general.lvol:
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vg: firefly
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lv: test
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size: 512g
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active: false
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- name: Create a thin pool of 512g
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community.general.lvol:
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vg: firefly
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thinpool: testpool
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size: 512g
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- name: Create a thin volume of 128g
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community.general.lvol:
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vg: firefly
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lv: test
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thinpool: testpool
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size: 128g
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'''
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import re
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from ansible.module_utils.basic import AnsibleModule
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LVOL_ENV_VARS = dict(
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# make sure we use the C locale when running lvol-related commands
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LANG='C',
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LC_ALL='C',
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LC_MESSAGES='C',
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LC_CTYPE='C',
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)
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def mkversion(major, minor, patch):
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return (1000 * 1000 * int(major)) + (1000 * int(minor)) + int(patch)
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def parse_lvs(data):
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lvs = []
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for line in data.splitlines():
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parts = line.strip().split(';')
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lvs.append({
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'name': parts[0].replace('[', '').replace(']', ''),
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'size': float(parts[1]),
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'active': (parts[2][4] == 'a'),
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'thinpool': (parts[2][0] == 't'),
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'thinvol': (parts[2][0] == 'V'),
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})
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return lvs
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def parse_vgs(data):
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vgs = []
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for line in data.splitlines():
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parts = line.strip().split(';')
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vgs.append({
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'name': parts[0],
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'size': float(parts[1]),
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'free': float(parts[2]),
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'ext_size': float(parts[3])
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})
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return vgs
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def get_lvm_version(module):
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ver_cmd = module.get_bin_path("lvm", required=True)
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rc, out, err = module.run_command("%s version" % (ver_cmd))
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if rc != 0:
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return None
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m = re.search(r"LVM version:\s+(\d+)\.(\d+)\.(\d+).*(\d{4}-\d{2}-\d{2})", out)
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if not m:
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return None
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return mkversion(m.group(1), m.group(2), m.group(3))
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def main():
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module = AnsibleModule(
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argument_spec=dict(
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vg=dict(type='str', required=True),
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lv=dict(type='str'),
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size=dict(type='str'),
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opts=dict(type='str'),
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state=dict(type='str', default='present', choices=['absent', 'present']),
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force=dict(type='bool', default=False),
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shrink=dict(type='bool', default=True),
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active=dict(type='bool', default=True),
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snapshot=dict(type='str'),
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pvs=dict(type='str'),
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resizefs=dict(type='bool', default=False),
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thinpool=dict(type='str'),
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),
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supports_check_mode=True,
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required_one_of=(
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['lv', 'thinpool'],
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),
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)
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module.run_command_environ_update = LVOL_ENV_VARS
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# Determine if the "--yes" option should be used
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version_found = get_lvm_version(module)
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if version_found is None:
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module.fail_json(msg="Failed to get LVM version number")
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version_yesopt = mkversion(2, 2, 99) # First LVM with the "--yes" option
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if version_found >= version_yesopt:
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yesopt = "--yes"
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else:
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yesopt = ""
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vg = module.params['vg']
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lv = module.params['lv']
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size = module.params['size']
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opts = module.params['opts']
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state = module.params['state']
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force = module.boolean(module.params['force'])
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shrink = module.boolean(module.params['shrink'])
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active = module.boolean(module.params['active'])
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resizefs = module.boolean(module.params['resizefs'])
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thinpool = module.params['thinpool']
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size_opt = 'L'
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size_unit = 'm'
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size_operator = None
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snapshot = module.params['snapshot']
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pvs = module.params['pvs']
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if pvs is None:
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pvs = ""
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else:
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pvs = pvs.replace(",", " ")
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if opts is None:
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opts = ""
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# Add --test option when running in check-mode
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if module.check_mode:
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test_opt = ' --test'
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else:
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test_opt = ''
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if size:
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# LVEXTEND(8)/LVREDUCE(8) -l, -L options: Check for relative value for resizing
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if size.startswith('+'):
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size_operator = '+'
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size = size[1:]
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elif size.startswith('-'):
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size_operator = '-'
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size = size[1:]
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# LVCREATE(8) does not support [+-]
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# LVCREATE(8)/LVEXTEND(8)/LVREDUCE(8) -l --extents option with percentage
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if '%' in size:
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size_parts = size.split('%', 1)
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size_percent = int(size_parts[0])
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if size_percent > 100:
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module.fail_json(msg="Size percentage cannot be larger than 100%")
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size_whole = size_parts[1]
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if size_whole == 'ORIGIN':
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module.fail_json(msg="Snapshot Volumes are not supported")
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elif size_whole not in ['VG', 'PVS', 'FREE']:
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module.fail_json(msg="Specify extents as a percentage of VG|PVS|FREE")
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size_opt = 'l'
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size_unit = ''
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# LVCREATE(8)/LVEXTEND(8)/LVREDUCE(8) -L --size option unit
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if '%' not in size:
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if size[-1].lower() in 'bskmgtpe':
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size_unit = size[-1]
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size = size[0:-1]
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try:
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float(size)
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if not size[0].isdigit():
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raise ValueError()
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except ValueError:
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module.fail_json(msg="Bad size specification of '%s'" % size)
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# when no unit, megabytes by default
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if size_opt == 'l':
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unit = 'm'
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else:
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unit = size_unit
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# Get information on volume group requested
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vgs_cmd = module.get_bin_path("vgs", required=True)
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rc, current_vgs, err = module.run_command(
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"%s --noheadings --nosuffix -o vg_name,size,free,vg_extent_size --units %s --separator ';' %s" % (vgs_cmd, unit.lower(), vg))
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if rc != 0:
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if state == 'absent':
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module.exit_json(changed=False, stdout="Volume group %s does not exist." % vg)
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else:
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module.fail_json(msg="Volume group %s does not exist." % vg, rc=rc, err=err)
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vgs = parse_vgs(current_vgs)
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this_vg = vgs[0]
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# Get information on logical volume requested
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lvs_cmd = module.get_bin_path("lvs", required=True)
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rc, current_lvs, err = module.run_command(
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"%s -a --noheadings --nosuffix -o lv_name,size,lv_attr --units %s --separator ';' %s" % (lvs_cmd, unit.lower(), vg))
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if rc != 0:
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if state == 'absent':
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module.exit_json(changed=False, stdout="Volume group %s does not exist." % vg)
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else:
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module.fail_json(msg="Volume group %s does not exist." % vg, rc=rc, err=err)
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changed = False
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lvs = parse_lvs(current_lvs)
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if snapshot:
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# Check snapshot pre-conditions
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for test_lv in lvs:
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if test_lv['name'] == lv or test_lv['name'] == thinpool:
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if not test_lv['thinpool'] and not thinpool:
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break
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else:
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module.fail_json(msg="Snapshots of thin pool LVs are not supported.")
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else:
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module.fail_json(msg="Snapshot origin LV %s does not exist in volume group %s." % (lv, vg))
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check_lv = snapshot
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elif thinpool:
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if lv:
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# Check thin volume pre-conditions
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for test_lv in lvs:
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if test_lv['name'] == thinpool:
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break
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else:
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module.fail_json(msg="Thin pool LV %s does not exist in volume group %s." % (thinpool, vg))
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check_lv = lv
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else:
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check_lv = thinpool
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else:
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check_lv = lv
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for test_lv in lvs:
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if test_lv['name'] in (check_lv, check_lv.rsplit('/', 1)[-1]):
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this_lv = test_lv
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break
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else:
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this_lv = None
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msg = ''
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if this_lv is None:
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if state == 'present':
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if size_operator is not None:
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if size_operator == "-" or (size_whole not in ["VG", "PVS", "FREE", "ORIGIN", None]):
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module.fail_json(msg="Bad size specification of '%s%s' for creating LV" % (size_operator, size))
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# Require size argument except for snapshot of thin volumes
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if (lv or thinpool) and not size:
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for test_lv in lvs:
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if test_lv['name'] == lv and test_lv['thinvol'] and snapshot:
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break
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else:
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module.fail_json(msg="No size given.")
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# create LV
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lvcreate_cmd = module.get_bin_path("lvcreate", required=True)
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if snapshot is not None:
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if size:
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cmd = "%s %s %s -%s %s%s -s -n %s %s %s/%s" % (lvcreate_cmd, test_opt, yesopt, size_opt, size, size_unit, snapshot, opts, vg, lv)
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else:
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cmd = "%s %s %s -s -n %s %s %s/%s" % (lvcreate_cmd, test_opt, yesopt, snapshot, opts, vg, lv)
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elif thinpool and lv:
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if size_opt == 'l':
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module.fail_json(changed=False, msg="Thin volume sizing with percentage not supported.")
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size_opt = 'V'
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cmd = "%s %s %s -n %s -%s %s%s %s -T %s/%s" % (lvcreate_cmd, test_opt, yesopt, lv, size_opt, size, size_unit, opts, vg, thinpool)
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elif thinpool and not lv:
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cmd = "%s %s %s -%s %s%s %s -T %s/%s" % (lvcreate_cmd, test_opt, yesopt, size_opt, size, size_unit, opts, vg, thinpool)
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else:
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cmd = "%s %s %s -n %s -%s %s%s %s %s %s" % (lvcreate_cmd, test_opt, yesopt, lv, size_opt, size, size_unit, opts, vg, pvs)
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rc, dummy, err = module.run_command(cmd)
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if rc == 0:
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changed = True
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else:
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module.fail_json(msg="Creating logical volume '%s' failed" % lv, rc=rc, err=err)
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else:
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if state == 'absent':
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# remove LV
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if not force:
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module.fail_json(msg="Sorry, no removal of logical volume %s without force=yes." % (this_lv['name']))
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lvremove_cmd = module.get_bin_path("lvremove", required=True)
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rc, dummy, err = module.run_command("%s %s --force %s/%s" % (lvremove_cmd, test_opt, vg, this_lv['name']))
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if rc == 0:
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module.exit_json(changed=True)
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else:
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module.fail_json(msg="Failed to remove logical volume %s" % (lv), rc=rc, err=err)
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elif not size:
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pass
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elif size_opt == 'l':
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# Resize LV based on % value
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tool = None
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size_free = this_vg['free']
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if size_whole == 'VG' or size_whole == 'PVS':
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size_requested = size_percent * this_vg['size'] / 100
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else: # size_whole == 'FREE':
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size_requested = size_percent * this_vg['free'] / 100
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if size_operator == '+':
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size_requested += this_lv['size']
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elif size_operator == '-':
|
|
size_requested = this_lv['size'] - size_requested
|
|
|
|
# According to latest documentation (LVM2-2.03.11) all tools round down
|
|
size_requested -= (size_requested % this_vg['ext_size'])
|
|
|
|
if this_lv['size'] < size_requested:
|
|
if (size_free > 0) and (size_free >= (size_requested - this_lv['size'])):
|
|
tool = module.get_bin_path("lvextend", required=True)
|
|
else:
|
|
module.fail_json(
|
|
msg="Logical Volume %s could not be extended. Not enough free space left (%s%s required / %s%s available)" %
|
|
(this_lv['name'], (size_requested - this_lv['size']), unit, size_free, unit)
|
|
)
|
|
elif shrink and this_lv['size'] > size_requested + this_vg['ext_size']: # more than an extent too large
|
|
if size_requested < 1:
|
|
module.fail_json(msg="Sorry, no shrinking of %s to 0 permitted." % (this_lv['name']))
|
|
elif not force:
|
|
module.fail_json(msg="Sorry, no shrinking of %s without force=yes" % (this_lv['name']))
|
|
else:
|
|
tool = module.get_bin_path("lvreduce", required=True)
|
|
tool = '%s %s' % (tool, '--force')
|
|
|
|
if tool:
|
|
if resizefs:
|
|
tool = '%s %s' % (tool, '--resizefs')
|
|
if size_operator:
|
|
cmd = "%s %s -%s %s%s%s %s/%s %s" % (tool, test_opt, size_opt, size_operator, size, size_unit, vg, this_lv['name'], pvs)
|
|
else:
|
|
cmd = "%s %s -%s %s%s %s/%s %s" % (tool, test_opt, size_opt, size, size_unit, vg, this_lv['name'], pvs)
|
|
rc, out, err = module.run_command(cmd)
|
|
if "Reached maximum COW size" in out:
|
|
module.fail_json(msg="Unable to resize %s to %s%s" % (lv, size, size_unit), rc=rc, err=err, out=out)
|
|
elif rc == 0:
|
|
changed = True
|
|
msg = "Volume %s resized to %s%s" % (this_lv['name'], size_requested, unit)
|
|
elif "matches existing size" in err:
|
|
module.exit_json(changed=False, vg=vg, lv=this_lv['name'], size=this_lv['size'])
|
|
elif "not larger than existing size" in err:
|
|
module.exit_json(changed=False, vg=vg, lv=this_lv['name'], size=this_lv['size'], msg="Original size is larger than requested size", err=err)
|
|
else:
|
|
module.fail_json(msg="Unable to resize %s to %s%s" % (lv, size, size_unit), rc=rc, err=err)
|
|
|
|
else:
|
|
# resize LV based on absolute values
|
|
tool = None
|
|
if float(size) > this_lv['size'] or size_operator == '+':
|
|
tool = module.get_bin_path("lvextend", required=True)
|
|
elif shrink and float(size) < this_lv['size'] or size_operator == '-':
|
|
if float(size) == 0:
|
|
module.fail_json(msg="Sorry, no shrinking of %s to 0 permitted." % (this_lv['name']))
|
|
if not force:
|
|
module.fail_json(msg="Sorry, no shrinking of %s without force=yes." % (this_lv['name']))
|
|
else:
|
|
tool = module.get_bin_path("lvreduce", required=True)
|
|
tool = '%s %s' % (tool, '--force')
|
|
|
|
if tool:
|
|
if resizefs:
|
|
tool = '%s %s' % (tool, '--resizefs')
|
|
if size_operator:
|
|
cmd = "%s %s -%s %s%s%s %s/%s %s" % (tool, test_opt, size_opt, size_operator, size, size_unit, vg, this_lv['name'], pvs)
|
|
else:
|
|
cmd = "%s %s -%s %s%s %s/%s %s" % (tool, test_opt, size_opt, size, size_unit, vg, this_lv['name'], pvs)
|
|
rc, out, err = module.run_command(cmd)
|
|
if "Reached maximum COW size" in out:
|
|
module.fail_json(msg="Unable to resize %s to %s%s" % (lv, size, size_unit), rc=rc, err=err, out=out)
|
|
elif rc == 0:
|
|
changed = True
|
|
elif "matches existing size" in err:
|
|
module.exit_json(changed=False, vg=vg, lv=this_lv['name'], size=this_lv['size'])
|
|
elif "not larger than existing size" in err:
|
|
module.exit_json(changed=False, vg=vg, lv=this_lv['name'], size=this_lv['size'], msg="Original size is larger than requested size", err=err)
|
|
else:
|
|
module.fail_json(msg="Unable to resize %s to %s%s" % (lv, size, size_unit), rc=rc, err=err)
|
|
|
|
if this_lv is not None:
|
|
if active:
|
|
lvchange_cmd = module.get_bin_path("lvchange", required=True)
|
|
rc, dummy, err = module.run_command("%s -ay %s/%s" % (lvchange_cmd, vg, this_lv['name']))
|
|
if rc == 0:
|
|
module.exit_json(changed=((not this_lv['active']) or changed), vg=vg, lv=this_lv['name'], size=this_lv['size'])
|
|
else:
|
|
module.fail_json(msg="Failed to activate logical volume %s" % (lv), rc=rc, err=err)
|
|
else:
|
|
lvchange_cmd = module.get_bin_path("lvchange", required=True)
|
|
rc, dummy, err = module.run_command("%s -an %s/%s" % (lvchange_cmd, vg, this_lv['name']))
|
|
if rc == 0:
|
|
module.exit_json(changed=(this_lv['active'] or changed), vg=vg, lv=this_lv['name'], size=this_lv['size'])
|
|
else:
|
|
module.fail_json(msg="Failed to deactivate logical volume %s" % (lv), rc=rc, err=err)
|
|
|
|
module.exit_json(changed=changed, msg=msg)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|