lvm Cookbook

Installs lvm2 package and includes custom resources (providers) for managing LVM.

Note on LVM gems

This cookbook has used multiple varients of the ruby-lvm and ruby-lvm-attrib gems for interacting with LVM. Most recently we used di-ruby-lvm and di-ruby-lvm-attrib gems, which are no longer being maintained. As of the 4.0 release this cookbook uses new Chef maintained gems: chef-ruby-lvm and chef-ruby-lvm-attrib. The cookbook will first remove the old gems before load/installing the new gems, in order to prevent gem conflicts. If you previously used attributes to control the version of the gems to install, you will need to update to the latest attribute names to maintain that functionality.

Requirements

Platforms

• Debian/Ubuntu
• RHEL/CentOS/Scientific/Amazon/Oracle

Chef

• Chef 12.1+

Cookbooks

• none

Resources/Providers

lvm_physical_volume

Manages LVM physical volumes.

Actions

Action	Description
:create	(default) Creates a new physical volume
:resize	Resize an existing physical volume

Parameters

Parameter	Description	Example	Default
name	(required) The device to create the new physical volume on	/dev/sda
wipe_signatures	Force the creation of the Logical Volume, even if lvm detects existing PV signatures/td>	true	false

Examples

lvm_physical_volume '/dev/sda'

---

lvm_logical_volume

Manages LVM logical volumes.

Actions

Action	Description
:create	(default) Creates a new logical volume
:resize	Resize an existing logical volume

Parameters

Attribute	Description	Example	Default
name	(name attribute) Name of the logical volume	bacon
group	(required) Volume group in which to create the new volume (not required if the volume is declared inside of an `lvm_volume_group` block)	bits
size	(required) Size of the volume. It can be the size of the volume with units (k, K, m, M, g, G, t, T) It can be specified as the percentage of the size of the volume group	10G 25%VG
filesystem	The format for the file system	'ext4'
filesystem_params	Optional parameters to use when formatting the file system	'-j -L log -m 2 -i 10240 -J size=400 -b 4096'
mount_point	Either a String containing the path to the mount point, or a Hash with the following keys: driver: name: dokken privileged: true # because Docker and SystemD/Upstart chef_version: current - (required) the directory to mount the volume on options - the mount options for the volume dump - the dump field for the fstab entry pass - the pass field for the fstab entry	'/var/my/mount'
physical_volumes	Array of physical volumes that the volume will be restricted to	['/dev/sda', '/dev/sdb']
stripes	Number of stripes for the volume	5
stripe_size	Number of kilobytes per stripe segment (must be a power of 2 less than or equal to the physical extent size for the volume group)	24
mirrors	Number of mirrors for the volume	5
contiguous	Whether or not volume should use the contiguous allocation policy	true	false
readahead	The readahead sector count for the volume (can be a value between 2 and 120, 'auto', or 'none')	'auto'
take_up_free_space	whether to have the LV take up the remainder of free space on the VG. Only valid for resize action	true	false
wipe_signatures	Force the creation of the Logical Volume, even if `lvm` detects existing LV signatures/td>	`true`	`false`

Examples

lvm_logical_volume 'home' do
  group       'vg00'
  size        '25%VG'
  filesystem  'ext4'
  mount_point '/home'
  stripes     3
  mirrors     2
end

---

lvm_thin_pool

Manages LVM thin pools (which are simply logical volumes created with the --thinpool argument to lvcreate).

Actions

Action	Description
:create	(default) Create a new thin pool logical volume
:resize	Resize an existing thin pool logical volume

Parameters

Attribute	Description	Example	Default
name	(name attribute) Name of the logical volume	bacon
group	(required) Volume group in which to create the new volume (not required if the volume is declared inside of an `lvm_volume_group` block)	bits
size	(required) Size of the volume. It can be the size of the volume with units (k, K, m, M, g, G, t, T) It can be specified as the percentage of the size of the volume group	10G 25%VG
filesystem	The format for the file system	'ext4'
filesystem_params	Optional parameters to use when formatting the file system	'-j -L log -m 2 -i 10240 -J size=400 -b 4096'
mount_point	Either a String containing the path to the mount point, or a Hash with the following keys: driver: name: dokken privileged: true # because Docker and SystemD/Upstart chef_version: current - (required) the directory to mount the volume on options - the mount options for the volume dump - the dump field for the fstab entry pass - the pass field for the fstab entry	'/var/my/mount'
physical_volumes	Array of physical volumes that the volume will be restricted to	['/dev/sda', '/dev/sdb']
stripes	Number of stripes for the volume	5
stripe_size	Number of kilobytes per stripe segment (must be a power of 2 less than or equal to the physical extent size for the volume group)	24
mirrors	Number of mirrors for the volume	5
contiguous	Whether or not volume should use the contiguous allocation policy	true	false
readahead	The readahead sector count for the volume (can be a value between 2 and 120, 'auto', or 'none')	'auto'
take_up_free_space	whether to have the LV take up the remainder of free space on the VG. Only valid for resize action	true	false
thin_volume	Shortcut for creating a new `lvm_thin_volume` definition (the volumes will be created in the order they are declared)

---

lvm_thin_volume

Manages LVM thin volumes (which are simply logical volumes created with the --thin argument to lvcreate and are contained inside of other logical volumes that were created with the --thinpool option to lvcreate).

Actions

Action	Description
:create	(default) Create a new thin logical volume
:resize	Resize an existing thin logical volume

Parameters

Attribute	Description	Example	Default
name	(name attribute) Name of the logical volume	bacon
group	(required) Volume group in which to create the new volume (not required if the volume is declared inside of an `lvm_volume_group` block)	bits
pool	(required) Thin pool volume in which to create the new volume (not required if the volume is declared inside of an `lvm_thin_pool` block)	bits
size	(required) Size of the volume. It can be the size of the volume with units (k, K, m, M, g, G, t, T)	10G
filesystem	The format for the file system	'ext4'
filesystem_params	Optional parameters to use when formatting the file system	'-j -L log -m 2 -i 10240 -J size=400 -b 4096'
mount_point	Either a String containing the path to the mount point, or a Hash with the following keys: driver: name: dokken privileged: true # because Docker and SystemD/Upstart chef_version: current - (required) the directory to mount the volume on options - the mount options for the volume dump - the dump field for the fstab entry pass - the pass field for the fstab entry	'/var/my/mount'

Examples

lvm_thin_volume 'thin01' do
  group       'vg00'
  pool        'lv-thin-pool'
  size        '5G'
  filesystem  'ext4'
  mount_point location: '/var/thin01', options: 'noatime,nodiratime'
end

---

lvm_volume_group

Manages LVM volume groups.

Actions

Action	Description
:create	(default) Creates a new volume group
:extend	Extend an existing volume group to include new physical volumes

Parameters

Attribute	Description	Example	Default
name	(required) Name of the volume group	'bacon'
physical_volumes	(required) The device or list of devices to use as physical volumes (if they haven't already been initialized as physical volumes, they will be initialized automatically)	['/dev/sda', '/dev/sdb']
physical_extent_size	The physical extent size for the volume group
logical_volume	Shortcut for creating a new lvm_logical_volume definition (the logical volumes will be created in the order they are declared)
wipe_signatures	Force the creation of the Volume Group, even if lvm detects existing non-LVM data on disk	true	false
thin_pool	Shortcut for creating a new lvm_thin_pool definition (the logical volumes will be created in the order they are declared)

Examples

lvm_volume_group 'vg00' do
  physical_volumes ['/dev/sda', '/dev/sdb', '/dev/sdc']
  wipe_signatures true

  logical_volume 'logs' do
    size        '1G'
    filesystem  'xfs'
    mount_point location: '/var/log', options: 'noatime,nodiratime'
    stripes     3
  end

  logical_volume 'home' do
    size        '25%VG'
    filesystem  'ext4'
    mount_point '/home'
    stripes     3
    mirrors     2
  end

  thin_pool "lv-thin-pool" do
    size '5G'
    stripes 2

    thin_volume "thin01" do
      size '10G'
      filesystem  'ext4'
      mount_point location: '/var/thin01', options: 'noatime,nodiratime'
    end
  end
end

Usage

Include the default recipe in your run list on a node, in a role, or in another recipe:

run_list(
  'recipe[lvm::default]'
)

Depend on lvm in any cookbook that uses its Resources/Providers:

# other_cookbook/metadata.rb
depends 'lvm'

Caveats

This cookbook depends on the chef-ruby-lvm and chef-ruby-lvm-attrib gems. The chef-ruby-lvm-attrib gem in particular is a common cause of failures when using the providers. If you get a failure with an error message similar to

No such file or directory - /opt/chef/.../chef-ruby-lvm-attrib-0.0.3/lib/lvm/attributes/2.02.300(2)/lvs.yaml

then you are running a version of lvm that the gems do not support. However, getting support added is usually pretty easy. Just follow the instructions on "Adding Attributes" in the chef-ruby-lvm-attrib README.

License and Authors

• Author:: Joshua Timberman [email protected]
• Author:: Greg Symons [email protected]

Copyright:: 2011-2016, Chef Software, Inc

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.