Adding new ansible module lvol_cache
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Pavol Ipoth
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1 changed files with 793 additions and 0 deletions
793
system/lvol_cache.py
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793
system/lvol_cache.py
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2016, Pavol Ipoth <pavol.ipoth@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = '''
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---
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author:
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- "Pavol Ipoth <pavol.ipoth@gmail.com>"
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module: lvol_cache
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short_description: Configure Cache LVM logical volumes
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description:
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- This module creates, removes or resizes, converts cache logical volumes.
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options:
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vg:
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description:
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- The volume group this logical volume is part of.
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required: true
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lv:
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description:
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- The name of the logical volume.
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required: true
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size:
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description:
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- The size of the logical volume, by
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default in megabytes or optionally with one of [bBsSkKmMgGtTpPeE] units; or
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as a percentage of [VG|PVS|FREE]; +size is not implemented, as it is by
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design not indempodent
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Float values must begin with a digit.
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state:
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choices: [ "present", "absent" ]
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default: present
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description:
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- Control if the logical volume exists. If C(present) the C(size) option
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is required.
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required: false
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force:
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choices: [ "yes", "no" ]
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default: "no"
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description:
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- Shrink/extend/remove/conversion operations of volumes requires this switch. Ensures that
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that filesystems get never corrupted/destroyed by mistake.
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required: false
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opts:
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description:
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- Free-form options to be passed to the lvcreate command
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pvs:
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description:
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- Comma separated list of physical volumes /dev/sda,/dev/sdc
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type:
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choices: ["cache", "cache-pool", "normal"]
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default: normal
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description:
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- Type of logical volume, cache is cached lvol, cache-pool is cache pool
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supplying cached lvol, normal is lvol without any type. To create cache
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lvol, cache pool must already exist
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mode:
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choices: ["writeback", "writethrough"]
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default: writethrough
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- This value is used when type is cache pool, specifies how data
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are written to the lvol
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pool:
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description:
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- This value is used when type is cache, specifies which cache pool will
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be caching data for cache lvol. Must be in format vg/lv. Cache pool lvol
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and cache lvol must be from same vg (this is restriction of lvm2).
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notes:
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- Filesystems on top of the volume are not resized.
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'''
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EXAMPLES = '''
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# Create a logical volume of 512m.
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- lvol: vg=firefly lv=test size=512m
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# Create a logical volume of 512g.
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- lvol: vg=firefly lv=test size=512g
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# Create a logical volume the size of all remaining space in the volume group
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- lvol: vg=firefly lv=test size=100%FREE
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# Create a logical volume with special options
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- lvol: vg=firefly lv=test size=512g opts="-r 16"
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# Extend the logical volume to 1024m.
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- lvol: vg=firefly lv=test size=1024m
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# Extend the logical volume to take all remaining space of the PVs
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- lvol: vg=firefly lv=test size=100%PVS
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# Resize the logical volume to % of VG
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- lvol: vg=firefly lv=test size=80%VG force=yes
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# Reduce the logical volume to 512m
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- lvol: vg=firefly lv=test size=512m force=yes
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# Remove the logical volume.
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- lvol: vg=firefly lv=test state=absent force=yes
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# Create cache pool logical volume of 512m.
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- lvol: vg=firefly lv=testpool size=512m type=cache-pool
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# Create cache lvol testcached with cache pool firefly/testpool,
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# cache pool must already exist
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- lvol: vg=firefly lv=testcached size=1g type=cache pool=firefly/testpool
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# Extend cache pool to 2g, force must be yes
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- lvol: vg=firefly lv=testpool size=2g type=cache-pool force=yes
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# Extend cache lvol to 5g, force must be yes
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- lvol: vg=firefly lv=testcached size=5g type=cache pool=firefly/testpool force=yes
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# Convert cache lvol to normal lvol
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- lvol: vg=firefly lv=testcached size=5g type=normal force=yes
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# Convert normal lvol to cache pool
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- lvol: vg=firefly lv=testcached size=5g type=cache-pool force=yes
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# Convert cache pool lvol to cache lvol, you should notice that firefly/testpool
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# still exists
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- lvol: vg=firefly lv=testcached size=5g type=cache pool=firefly/testpool force=yes
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# Remove cache pool lvol, this also changes cache lvol to normal
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- lvol: vg=firefly lv=testpool size=2g type=cache-pool state=absent force=yes
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'''
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import re
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# import module snippets
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from ansible.module_utils.basic import *
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decimal_point = re.compile(r"(\d+\.?\d+)")
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class Vg(object):
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name = ''
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size = None
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unit = 'm'
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free = None
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vg_extent_size = None
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module = None
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def __init__(self, module, vg_name, unit):
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self.module = module
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vg_info = self.get_vg_info(vg_name, unit)
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self.name = vg_info['name']
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self.size = vg_info['size']
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self.unit = unit
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self.free = vg_info['free']
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self.vg_extent_size = vg_info['vg_extent_size']
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def get_vg_info(self, vg_name, unit):
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vgs_cmd = self.module.get_bin_path("vgs", required=True)
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cmd = "%s --noheadings -o vg_name,size,free,vg_extent_size --units %s --separator ';' %s" % (vgs_cmd, unit, vg_name)
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rc, current_vgs, err = self.module.run_command(cmd)
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if rc != 0:
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self.module.fail_json(msg="Volume group %s does not exist." % vg_name, rc=rc, err=err)
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parts = current_vgs.strip().split(';')
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return {
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'name': parts[0],
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'size': float(decimal_point.match(parts[1]).group(1)),
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'free': float(decimal_point.match(parts[2]).group(1)),
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'vg_extent_size': float(decimal_point.match(parts[3]).group(1))
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}
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class Lvol(object):
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name = ''
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size = None
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unit = 'm'
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pool_lv = ''
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vg = None
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yes_opt = ""
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cachemode = ""
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module = None
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def __init__(self, module, vg_name, lv_name, unit):
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self.vg = Vg(module, vg_name, unit)
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self.module = module
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lv_info = self.get_lv_info(vg_name, lv_name, unit)
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self.name = lv_info['name']
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self.pool_lv = lv_info['pool_lv']
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self.size = lv_info['size']
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self.cachemode = lv_info['cachemode']
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self.unit = unit
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self.yes_opt = self.get_yes_opt(module)
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@classmethod
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def exists(cls, module, vg_name, lv_name):
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exists = False
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lvs_cmd = module.get_bin_path("lvs", required=True)
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rc, current_lv, err = module.run_command(
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"%s -a %s/%s" % (lvs_cmd, vg_name, lv_name)
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)
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if rc == 0:
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exists = True
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elif rc == 5 and "Failed to find logical volume" in err:
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exists = False
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else:
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module.fail_json(msg="Unexpected error", rc=rc, err=err)
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return exists
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@classmethod
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def is_cache_pool(cls, module, vg_name, lv_name):
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is_cache_pool = False
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lvs_cmd = module.get_bin_path("lvs", required=True)
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rc, current_lv, err = module.run_command(
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"%s -a --noheadings --nosuffix -o lv_layout --separator ';' %s/%s" % (lvs_cmd, vg_name, lv_name)
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)
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if rc != 0:
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module.fail_json(msg="Error", rc=rc, err=err)
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parts = current_lv.strip().split(';')
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if 'cache,pool' in parts[0]:
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is_cache_pool = True
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return is_cache_pool
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@classmethod
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def is_cache_lv(cls, module, vg_name, lv_name):
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is_cache_lv = False
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lvs_cmd = module.get_bin_path("lvs", required=True)
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rc, current_lv, err = module.run_command(
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"%s -a --noheadings --nosuffix -o lv_layout --separator ';' %s/%s" % (lvs_cmd, vg_name, lv_name)
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)
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if rc != 0:
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module.fail_json(msg="Error", rc=rc, err=err)
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parts = current_lv.strip().split(';')
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if 'cache' in parts[0] and 'pool' not in parts[0]:
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is_cache_lv = True
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return is_cache_lv
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@classmethod
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def mkversion(cls, major, minor, patch):
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return (1000 * 1000 * int(major)) + (1000 * int(minor)) + int(patch)
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@classmethod
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def get_lvm_version(cls, 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("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 cls.mkversion(m.group(1), m.group(2), m.group(3))
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def get_lv_info(self, vg_name, lv_name, unit):
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lvs_cmd = self.module.get_bin_path("lvs", required=True)
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rc, current_lvs, err = self.module.run_command(
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"%s -a --noheadings --nosuffix -o lv_name,size,pool_lv,cachemode --units %s --separator ';' %s/%s" % (lvs_cmd, unit, vg_name, lv_name)
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)
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if rc != 0:
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self.module.fail_json(msg="Volume group or lvol does not exist." % vg_name, rc=rc, err=err)
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parts = current_lvs.strip().split(';')
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return {
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'name': parts[0].replace('[','').replace(']',''),
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'size': float(decimal_point.match(parts[1]).group(1)),
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'pool_lv': parts[2].replace('[','').replace(']',''),
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'cachemode': parts[3]
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}
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@classmethod
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def get_yes_opt(cls, module):
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# Determine if the "--yes" option should be used
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version_found = cls.get_lvm_version(module)
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if version_found == None:
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module.fail_json(msg="Failed to get LVM version number")
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version_yesopt = cls.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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return yesopt
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@classmethod
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def get_size_opt(cls, requested_size):
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if '%' in requested_size:
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return 'l'
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else:
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return 'L'
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@classmethod
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def calculate_size(cls, vg_free, vg_size, lv_size, size):
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if '%' in size:
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parts = size.split('%', 1)
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size_percent = parts[0]
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size_whole = parts[1]
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if size_whole == 'VG' or size_whole == 'PVS':
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size_requested = float(size_percent) * float(vg_size) / 100
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else: # size_whole == 'FREE':
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size_requested = float(size_percent) * float(vg_free) / 100
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if '+' in size:
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size_requested += float(lv_size)
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else:
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size_requested = float(size[0:-1])
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if '+' in size:
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size_requested += float(lv_size)
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return size_requested
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@classmethod
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def create_lv(cls, module, requested_size, unit, opts, vg_name, lv_name, pvs):
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yes_opt = cls.get_yes_opt(module)
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lvcreate_cmd = module.get_bin_path("lvcreate", required=True)
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cmd = "%s %s -n %s -L %s%s %s %s %s" % (lvcreate_cmd, yes_opt, lv_name, requested_size, unit, opts, vg_name, pvs)
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rc, _, err = module.run_command(cmd)
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if rc != 0:
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module.fail_json(msg="Creating logical volume '%s' failed" % lv_name, rc=rc, err=err)
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@classmethod
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def delete_lv(cls, module, force, vg_name, lv_name):
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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." % (lv_name))
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lvremove_cmd = module.get_bin_path("lvremove", required=True)
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rc, _, err = module.run_command("%s --force %s/%s" % (lvremove_cmd, vg_name, lv_name))
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if rc !=0 :
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module.fail_json(msg="Failed to remove logical volume %s/%s" % (vg_name, lv_name), rc=rc, err=err)
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def resize_common(self, tool, requested_size, pvs):
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cmd = "%s -L %s%s %s/%s %s" % (tool, requested_size, self.unit, self.vg.name, self.name, pvs)
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rc, out, err = self.module.run_command(cmd)
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if rc != 0:
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if "Reached maximum COW size" in out:
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self.module.fail_json(msg="Unable to resize %s to %s%s" % (self.name, requested_size, self.unit), rc=rc, err=err, out=out)
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elif "matches existing size" in err:
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self.module.exit_json(changed=False, vg=self.vg.name, lv=self.name, size=self.size)
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else:
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self.module.fail_json(msg="Unable to resize %s to %s%s" % (self.name, requested_size, self.unit), rc=rc, err=err)
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def shrink_lv(self, force, requested_size, pvs):
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if requested_size == 0:
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self.module.fail_json(msg="Sorry, no shrinking of %s to 0 permitted." % (self.name))
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elif not force:
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self.module.fail_json(msg="Sorry, no shrinking of %s without force=yes" % (self.name))
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else:
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tool = self.module.get_bin_path("lvreduce", required=True)
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tool = '%s %s' % (tool, '--force')
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self.resize_common(tool, requested_size, pvs)
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def extend_lv(self, requested_size, pvs):
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if (self.vg.free > 0) and self.vg.free >= (requested_size - self.size):
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tool = self.module.get_bin_path("lvextend", required=True)
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else:
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self.module.fail_json(
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msg="Logical Volume %s could not be extended. Not enough free space left (%s%s required / %s%s available)"
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% (self.name, (requested_size - self.size), self.unit, self.vg.free, self.unit)
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)
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self.resize_common(tool, requested_size, pvs)
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def resize_lv(self, force, requested_size, pvs):
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if self.size < requested_size:
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self.extend_lv(requested_size, pvs)
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elif self.size > requested_size + self.vg.vg_extent_size: # more than an extent too large
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self.shrink_lv(force, requested_size, pvs)
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self.__init__(self.module, self.vg.name, self.name, self.unit)
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def convert_to_cache(self, pool):
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lvconvert_cmd = self.module.get_bin_path("lvconvert", required=True)
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rc, out, err = self.module.run_command(
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"%s --type cache --cachepool %s %s/%s" % (lvconvert_cmd, pool, self.vg.name, self.name)
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)
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if rc != 0:
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self.module.fail_json(msg="Converting logical volume to cache LV '%s' failed" % self.name, rc=rc, err=err)
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return CacheLvol(self.module, self.vg.name, self.name, self.unit)
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def convert_to_cache_pool(self, force, mode):
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lvconvert_cmd = self.module.get_bin_path("lvconvert", required=True)
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yes_opt = self.get_yes_opt(self.module)
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if not force:
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self.module.fail_json(msg="Sorry, no conversion of %s to cache-pool without force=yes." % (self.name))
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rc, out, err = self.module.run_command(
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"%s %s --type cache-pool --cachemode %s %s/%s" % (lvconvert_cmd, yes_opt, mode, self.vg.name, self.name)
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)
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if rc != 0:
|
||||
self.module.fail_json(msg="Converting logical volume to cache pool '%s' failed" % self.name, rc=rc, err=err)
|
||||
|
||||
return CachePoolLvol(self.module, self.vg.name, self.name, self.unit)
|
||||
|
||||
class CachePoolLvol(Lvol):
|
||||
|
||||
@classmethod
|
||||
def create_lv(cls, module, requested_size, unit, opts, vg_name, lv_name, pvs, mode):
|
||||
opts += " --type cache-pool --cachemode %s" % (mode)
|
||||
super(CachePoolLvol, cls).create_lv(module, requested_size, unit, opts, vg_name, lv_name, pvs)
|
||||
|
||||
def get_cache_lvol_name(self):
|
||||
cache_lvol_info = None
|
||||
lvs_cmd = self.module.get_bin_path("lvs", required=True)
|
||||
|
||||
rc, current_lvs, err = self.module.run_command(
|
||||
"%s -a --noheadings --nosuffix -o lv_name,size,pool_lv --units %s --separator ';' %s" % (lvs_cmd, self.unit, self.vg.name))
|
||||
|
||||
if rc != 0:
|
||||
if state == 'absent':
|
||||
self.module.exit_json(changed=False, stdout="Volume group %s does not exist." % self.vg.name, stderr=False)
|
||||
else:
|
||||
self.module.fail_json(msg="Volume group %s does not exist." % self.vg.name, rc=rc, err=err)
|
||||
|
||||
for line in current_lvs.splitlines():
|
||||
parts = line.strip().split(';')
|
||||
pool = parts[2].replace('[','').replace(']','')
|
||||
|
||||
if pool == self.name:
|
||||
cache_lvol_info = parts[0].replace('[','').replace(']','')
|
||||
|
||||
return cache_lvol_info
|
||||
|
||||
def resize_lv(self, force, requested_size, pvs):
|
||||
parent_cache_lvol_name = self.get_cache_lvol_name()
|
||||
|
||||
self.delete_lv(self.module, force, self.vg.name, self.name)
|
||||
self.create_lv(self.module, requested_size, self.unit, '', self.vg.name, self.name, pvs, self.cachemode)
|
||||
|
||||
if parent_cache_lvol_name is not None:
|
||||
parent_cache_lvol = Lvol(self.module, self.vg.name, parent_cache_lvol_name, self.unit)
|
||||
parent_cache_lvol.convert_to_cache("%s/%s" % (self.vg.name, self.name))
|
||||
|
||||
self.__init__(self.module, self.vg.name, self.name, self.unit)
|
||||
|
||||
def convert_to_cache(self, force, opts, pvs, pool):
|
||||
self.delete_lv(self.module, force, self.vg.name, self.name)
|
||||
CacheLvol.create_lv(self.module, self.size, self.unit, opts, self.vg.name, self.name, pvs, pool)
|
||||
|
||||
return CacheLvol(self.module, self.vg.name, self.name, self.unit)
|
||||
|
||||
def convert_to_normal(self, force, opts, pvs):
|
||||
self.delete_lv(self.module, force, self.vg.name, self.name)
|
||||
Lvol.create_lv(self.module, self.size, self.unit, opts, self.vg.name, self.name, pvs)
|
||||
|
||||
return Lvol(self.module, self.vg.name, self.name, self.unit)
|
||||
|
||||
def change_mode(self, force, opts, pvs, mode):
|
||||
cache_lvol_name = self.get_cache_lvol_name()
|
||||
|
||||
self.delete_lv(self.module, force, self.vg.name, self.name)
|
||||
self.create_lv(self.module, self.size, self.unit, opts, self.vg.name, self.name, pvs, mode)
|
||||
|
||||
if cache_lvol_name is not None:
|
||||
lvol = Lvol(self.module, self.vg.name, cache_lvol_name, self.unit)
|
||||
lvol.convert_to_cache("%s/%s" % (self.vg.name, self.name))
|
||||
|
||||
self.__init__(self.module, self.vg.name, self.name, self.unit)
|
||||
|
||||
class CacheLvol(Lvol):
|
||||
|
||||
@classmethod
|
||||
def create_lv(cls, module, requested_size, unit, opts, vg_name, lv_name, pvs, pool):
|
||||
opts += " --type cache --cachepool %s" % (pool)
|
||||
super(CacheLvol, cls).create_lv(module, requested_size, unit, opts, vg_name, lv_name, pvs)
|
||||
|
||||
def shrink_cache_lv(self, force, requested_size, pvs):
|
||||
self.split_cache_lv()
|
||||
self.shrink_lv(force, requested_size, pvs)
|
||||
self.attach_cache_lv()
|
||||
|
||||
def extend_cache_lv(self, requested_size, pvs):
|
||||
self.split_cache_lv()
|
||||
self.extend_lv(requested_size, pvs)
|
||||
self.attach_cache_lv()
|
||||
|
||||
def convert_to_normal(self):
|
||||
lvconvert_cmd = self.module.get_bin_path("lvconvert", required=True)
|
||||
lvsplit_cmd = "%s --splitcache %s/%s" % (lvconvert_cmd, self.vg.name, self.name)
|
||||
|
||||
rc, _, err = self.module.run_command(lvsplit_cmd)
|
||||
|
||||
if rc != 0:
|
||||
self.module.fail_json(msg="Spliting cache from logical volume '%s' failed" % self.name, rc=rc, err=err)
|
||||
|
||||
return Lvol(self.module, self.vg.name, self.name, self.unit)
|
||||
|
||||
def split_cache_lv(self):
|
||||
lvconvert_cmd = self.module.get_bin_path("lvconvert", required=True)
|
||||
lvsplit_cmd = "%s --splitcache %s/%s" % (lvconvert_cmd, self.vg.name, self.name)
|
||||
|
||||
rc, _, err = self.module.run_command(lvsplit_cmd)
|
||||
|
||||
if rc != 0:
|
||||
self.module.fail_json(msg="Spliting cache from logical volume '%s' failed" % self.name, rc=rc, err=err)
|
||||
|
||||
def attach_cache_lv(self):
|
||||
lvconvert_cmd = self.module.get_bin_path("lvconvert", required=True)
|
||||
lvattach_cmd = "%s --type cache --cachepool %s %s/%s" % (lvconvert_cmd, self.pool_lv, self.vg.name, self.name)
|
||||
|
||||
rc, _, err = self.module.run_command(lvattach_cmd)
|
||||
|
||||
if rc != 0:
|
||||
self.module.fail_json(msg="Attaching cache %s to logical volume %s failed" % (self.pool_lv, self.name), rc=rc, err=err)
|
||||
|
||||
def resize_lv(self, force, requested_size, pvs):
|
||||
if self.size < requested_size:
|
||||
self.extend_cache_lv(requested_size, pvs)
|
||||
elif self.size > requested_size + self.vg.vg_extent_size: # more than an extent too large
|
||||
self.shrink_cache_lv(force, requested_size, pvs)
|
||||
|
||||
def convert_to_cache_pool(self, force, mode):
|
||||
lvol = self.convert_to_normal()
|
||||
cachePoolLvol = lvol.convert_to_cache_pool(force, mode)
|
||||
|
||||
return cachePoolLvol
|
||||
|
||||
def change_pool(self, pool):
|
||||
lvol = self.convert_to_normal()
|
||||
lvol.convert_to_cache(pool)
|
||||
|
||||
self.__init__(self.module, self.vg.name, self.name, self.unit)
|
||||
|
||||
def validate_size(module, size):
|
||||
if '%' in size:
|
||||
size_parts = size.split('%', 1)
|
||||
size_percent = int(size_parts[0])
|
||||
|
||||
if size_percent > 100:
|
||||
module.fail_json(msg="Size percentage cannot be larger than 100%")
|
||||
|
||||
size_whole = size_parts[1]
|
||||
|
||||
if size_whole == 'ORIGIN':
|
||||
module.fail_json(msg="Snapshot Volumes are not supported")
|
||||
elif size_whole not in ['VG', 'PVS', 'FREE']:
|
||||
module.fail_json(msg="Specify extents as a percentage of VG|PVS|FREE")
|
||||
|
||||
if not '%' in size:
|
||||
if size[-1].lower() in 'bskmgtpe':
|
||||
size = size[0:-1]
|
||||
else:
|
||||
module.fail_json(msg="Invalid units for size: %s" % size)
|
||||
|
||||
try:
|
||||
float(size)
|
||||
if not size[0].isdigit(): raise ValueError()
|
||||
except ValueError:
|
||||
module.fail_json(msg="Bad size specification of '%s'" % size)
|
||||
|
||||
def main():
|
||||
module = AnsibleModule(
|
||||
argument_spec=dict(
|
||||
vg=dict(required=True),
|
||||
lv=dict(required=True),
|
||||
size=dict(type='str'),
|
||||
opts=dict(type='str'),
|
||||
state=dict(choices=["absent", "present"], default='present'),
|
||||
force=dict(type='bool', default='no'),
|
||||
pvs=dict(type='str'),
|
||||
type=dict(choices=["cache", "cache-pool", "normal"], default="normal"),
|
||||
mode=dict(choices=["writeback", "writethrough"], default='writethrough'),
|
||||
pool=dict(type='str')
|
||||
),
|
||||
supports_check_mode=True,
|
||||
)
|
||||
|
||||
vg = module.params['vg']
|
||||
lv = module.params['lv']
|
||||
size = module.params['size']
|
||||
opts = module.params['opts']
|
||||
state = module.params['state']
|
||||
force = module.boolean(module.params['force'])
|
||||
pvs = module.params['pvs']
|
||||
type = module.params['type']
|
||||
mode = module.params['mode']
|
||||
pool = module.params['pool']
|
||||
|
||||
if size: validate_size(module, size)
|
||||
|
||||
if pvs is None:
|
||||
pvs = ""
|
||||
else:
|
||||
pvs = pvs.replace(",", " ")
|
||||
|
||||
if opts is None:
|
||||
opts = ""
|
||||
|
||||
# when no unit, megabytes by default
|
||||
if '%' in size:
|
||||
unit = 'm'
|
||||
else:
|
||||
unit = size[-1].lower()
|
||||
|
||||
changed = False
|
||||
msg = ''
|
||||
|
||||
if type == 'cache' and not pool:
|
||||
module.fail_json(msg="You must specify also pool when type is cache")
|
||||
|
||||
if state == 'present' and not size:
|
||||
if not Lvol.exists(module, vg, lv):
|
||||
module.fail_json(msg="No size given.")
|
||||
else:
|
||||
module.exit_json(changed=False, vg=vg, lv=lv, size=vg)
|
||||
|
||||
vg_obj = Vg(module, vg, unit)
|
||||
|
||||
if not Lvol.exists(module, vg, lv):
|
||||
if state == 'present':
|
||||
if module.check_mode:
|
||||
changed = True
|
||||
else:
|
||||
requested_size = Lvol.calculate_size(vg_obj.free, vg_obj.size, 0, size)
|
||||
|
||||
if type != "normal":
|
||||
if type == 'cache':
|
||||
CacheLvol.create_lv(module, requested_size, unit, opts, vg, lv, pvs, pool)
|
||||
elif type == 'cache-pool':
|
||||
CachePoolLvol.create_lv(module, requested_size, unit, opts, vg, lv, pvs, mode)
|
||||
else:
|
||||
Lvol.create_lv(module, requested_size, unit, opts, vg, lv, pvs)
|
||||
|
||||
changed = True
|
||||
msg="Volume %s/%s created" % (vg, lv)
|
||||
else:
|
||||
if state == 'absent':
|
||||
if module.check_mode:
|
||||
module.exit_json(changed=True)
|
||||
else:
|
||||
if Lvol.is_cache_lv(module, vg, lv):
|
||||
cacheLvol = CacheLvol(module, vg, lv, unit)
|
||||
lvol = cacheLvol.convert_to_normal()
|
||||
|
||||
changed = True
|
||||
msg = "Volume %s converted to normal LV to %s." % (lv, size)
|
||||
|
||||
Lvol.delete_lv(module, force, vg, lv)
|
||||
|
||||
changed = True
|
||||
msg += "Volume %s/%s deleted." % (vg, lv)
|
||||
else:
|
||||
if module.check_mode:
|
||||
changed = True
|
||||
else:
|
||||
if type != "normal":
|
||||
if type == 'cache':
|
||||
if not Lvol.is_cache_lv(module, vg, lv):
|
||||
if Lvol.is_cache_pool(module, vg, lv):
|
||||
cachePoolLvol = CachePoolLvol(module, vg, lv, unit)
|
||||
cacheLvol = cachePoolLvol.convert_to_cache(force, opts, pvs, pool)
|
||||
else:
|
||||
lvol = Lvol(module, vg, lv, unit)
|
||||
cacheLvol = lvol.convert_to_cache(pool)
|
||||
|
||||
changed = True
|
||||
msg = "Volume %s converted to cache LV to %s." % (lv, size)
|
||||
else:
|
||||
cacheLvol = CacheLvol(module, vg, lv, unit)
|
||||
|
||||
requested_size = cacheLvol.calculate_size(vg_obj.free, vg_obj.size, cacheLvol.size, size)
|
||||
lvol_size_min = cacheLvol.size - vg_obj.vg_extent_size
|
||||
lvol_size_max = cacheLvol.size + vg_obj.vg_extent_size
|
||||
|
||||
current_pool = "%s/%s" % (cacheLvol.vg.name, cacheLvol.pool_lv)
|
||||
|
||||
if pool != current_pool:
|
||||
cacheLvol.change_pool(pool)
|
||||
|
||||
changed = True
|
||||
msg += "Changed pool of %s to %s." % (lv, pool)
|
||||
|
||||
if not (lvol_size_min <= requested_size <= lvol_size_max):
|
||||
cacheLvol.resize_lv(force, requested_size, pvs)
|
||||
|
||||
changed = True
|
||||
msg += "Volume %s resized to %s." % (lv, size)
|
||||
|
||||
elif type == 'cache-pool':
|
||||
if not Lvol.is_cache_pool(module, vg, lv):
|
||||
if Lvol.is_cache_lv(module, vg, lv):
|
||||
cacheLvol = CacheLvol(module, vg, lv, unit)
|
||||
cachePoolLvol = cacheLvol.convert_to_cache_pool(force, mode)
|
||||
else:
|
||||
lvol = Lvol(module, vg, lv, unit)
|
||||
cachePoolLvol = lvol.convert_to_cache_pool(force, mode)
|
||||
|
||||
changed = True
|
||||
msg = "Volume %s converted to cache pool to %s." % (lv, size)
|
||||
else:
|
||||
cachePoolLvol = CachePoolLvol(module, vg, lv, unit)
|
||||
|
||||
requested_size = cachePoolLvol.calculate_size(vg_obj.free, vg_obj.size, cachePoolLvol.size, size)
|
||||
lvol_size_min = cachePoolLvol.size - vg_obj.vg_extent_size
|
||||
lvol_size_max = cachePoolLvol.size + vg_obj.vg_extent_size
|
||||
|
||||
if mode != cachePoolLvol.cachemode:
|
||||
cachePoolLvol.change_mode(force, opts, pvs, mode)
|
||||
|
||||
changed = True
|
||||
msg += "Changed pool mode of %s to %s." % (lv, mode)
|
||||
|
||||
if not (lvol_size_min <= requested_size <= lvol_size_max):
|
||||
cachePoolLvol.resize_lv(force, requested_size, pvs)
|
||||
|
||||
changed = True
|
||||
msg += "Volume %s resized to %s." % (lv, size)
|
||||
else:
|
||||
if Lvol.is_cache_lv(module, vg, lv):
|
||||
cacheLvol = CacheLvol(module, vg, lv, unit)
|
||||
lvol = cacheLvol.convert_to_normal()
|
||||
|
||||
changed = True
|
||||
msg = "Volume %s converted to normal LV to %s." % (lv, size)
|
||||
elif Lvol.is_cache_pool(module, vg, lv):
|
||||
cachePoolLvol = CachePoolLvol(module, vg, lv, unit)
|
||||
cache_lvol_name = cachePoolLvol.get_cache_lvol_name()
|
||||
|
||||
if cache_lvol_name is not None:
|
||||
cacheLvol = CacheLvol(module, vg, cache_lvol_name, unit)
|
||||
lvol = cacheLvol.convert_to_normal()
|
||||
else:
|
||||
lvol = cachePoolLvol.convert_to_normal(force, opts, pvs)
|
||||
|
||||
changed = True
|
||||
msg += "Volume %s converted to normal LV to %s." % (lv, size)
|
||||
else:
|
||||
lvol = Lvol(module, vg, lv, unit)
|
||||
|
||||
requested_size = lvol.calculate_size(vg_obj.free, vg_obj.size, lvol.size, size)
|
||||
lvol_size_min = lvol.size - vg_obj.vg_extent_size
|
||||
lvol_size_max = lvol.size + vg_obj.vg_extent_size
|
||||
|
||||
if not (lvol_size_min <= requested_size <= lvol_size_max):
|
||||
lvol.resize_lv(force, requested_size, pvs)
|
||||
|
||||
changed = True
|
||||
msg += "Volume %s resized to %s." % (lv, size)
|
||||
|
||||
module.exit_json(changed=changed, msg=msg)
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
Loading…
Reference in a new issue