5451b7135b
Some of the volume drivers support the reserved_percentage option which determines the minimum free percentage kept. This introduces support for this option. Although the option is defined in the base volume driver class, it has effect only in drivers with appropriate implementations. Change-Id: I6060daab9fd72f96084b3d0c5cc5783da7f5c64c
195 lines
7.1 KiB
Puppet
195 lines
7.1 KiB
Puppet
# == define: cinder::backend::rbd
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#
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# Setup Cinder to use the RBD driver.
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# Compatible for multiple backends
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#
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# === Parameters
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#
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# [*rbd_pool*]
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# (required) Specifies the pool name for the block device driver.
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#
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# [*rbd_user*]
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# (required) A required parameter to configure OS init scripts and cephx.
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#
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# [*backend_host*]
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# (optional) Allows specifying the hostname/key used for the owner of volumes
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# created. This must be set to the same value on all nodes in a multi-node
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# environment.
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# Defaults to 'rbd:<rbd_pool>'
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#
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# [*volume_backend_name*]
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# (optional) Allows for the volume_backend_name to be separate of $name.
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# Defaults to: $name
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#
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# [*backend_availability_zone*]
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# (Optional) Availability zone for this volume backend.
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# If not set, the storage_availability_zone option value
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# is used as the default for all backends.
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# Defaults to $facts['os_service_default'].
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#
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# [*reserved_percentage*]
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# (Optional) The percentage of backend capacity is reserved.
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# Defaults to $facts['os_service_default'].
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#
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# [*rbd_ceph_conf*]
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# (optional) Path to the ceph configuration file to use
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# Defaults to '/etc/ceph/ceph.conf'
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#
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# [*rbd_flatten_volume_from_snapshot*]
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# (optional) Enable flatten volumes created from snapshots.
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# Defaults to false
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#
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# [*rbd_secret_uuid*]
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# (optional) A required parameter to use cephx.
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# Defaults to $facts['os_service_default']
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#
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# [*rbd_max_clone_depth*]
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# (optional) Maximum number of nested clones that can be taken of a
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# volume before enforcing a flatten prior to next clone.
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# A value of zero disables cloning
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# Defaults to $facts['os_service_default']
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#
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# [*rados_connect_timeout*]
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# (optional) Timeout value (in seconds) used when connecting to ceph cluster.
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# If value < 0, no timeout is set and default librados value is used.
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# Defaults to $facts['os_service_default']
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#
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# [*rados_connection_interval*]
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# (optional) Interval value (in seconds) between connection retries to ceph
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# cluster.
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# Defaults to $facts['os_service_default']
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#
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# [*rados_connection_retries*]
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# (optional) Number of retries if connection to ceph cluster failed.
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# Defaults to $facts['os_service_default']
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#
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# [*rbd_store_chunk_size*]
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# (optional) Volumes will be chunked into objects of this size (in megabytes).
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# Defaults to $facts['os_service_default']
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#
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# [*report_dynamic_total_capacity*]
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# (optional) Set to True for driver to report total capacity as a dynamic
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# value
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# Defaults to $facts['os_service_default']
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#
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# [*rbd_exclusive_cinder_pool*]
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# (optional) Set to True if the pool is used exclusively by Cinder.
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# Defaults to $facts['os_service_default']
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#
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# [*manage_volume_type*]
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# (Optional) Whether or not manage Cinder Volume type.
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# If set to true, a Cinder Volume type will be created
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# with volume_backend_name=$volume_backend_name key/value.
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# Defaults to false.
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#
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# [*extra_options*]
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# (optional) Hash of extra options to pass to the backend stanza
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# Defaults to: {}
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# Example :
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# { 'rbd_backend/param1' => { 'value' => value1 } }
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#
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define cinder::backend::rbd (
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$rbd_pool,
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$rbd_user,
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$backend_host = undef,
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$volume_backend_name = $name,
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$backend_availability_zone = $facts['os_service_default'],
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$reserved_percentage = $facts['os_service_default'],
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$rbd_ceph_conf = '/etc/ceph/ceph.conf',
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$rbd_flatten_volume_from_snapshot = $facts['os_service_default'],
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$rbd_secret_uuid = $facts['os_service_default'],
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$rbd_max_clone_depth = $facts['os_service_default'],
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$rados_connect_timeout = $facts['os_service_default'],
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$rados_connection_interval = $facts['os_service_default'],
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$rados_connection_retries = $facts['os_service_default'],
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$rbd_store_chunk_size = $facts['os_service_default'],
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$report_dynamic_total_capacity = $facts['os_service_default'],
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$rbd_exclusive_cinder_pool = $facts['os_service_default'],
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Boolean $manage_volume_type = false,
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Hash $extra_options = {},
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) {
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include cinder::deps
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include cinder::params
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$rbd_cluster_name = basename($rbd_ceph_conf, '.conf')
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if $rbd_cluster_name == 'ceph' {
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# Do not pass a parameter value in order to avoid service restarts
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$rbd_cluster_name_real = undef
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} else {
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$rbd_cluster_name_real = $rbd_cluster_name
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}
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cinder_config {
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"${name}/volume_backend_name": value => $volume_backend_name;
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"${name}/backend_availability_zone": value => $backend_availability_zone;
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"${name}/reserved_percentage": value => $reserved_percentage;
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"${name}/volume_driver": value => 'cinder.volume.drivers.rbd.RBDDriver';
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"${name}/rbd_ceph_conf": value => $rbd_ceph_conf;
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"${name}/rbd_user": value => $rbd_user;
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"${name}/rbd_pool": value => $rbd_pool;
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"${name}/rbd_max_clone_depth": value => $rbd_max_clone_depth;
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"${name}/rbd_flatten_volume_from_snapshot": value => $rbd_flatten_volume_from_snapshot;
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"${name}/rbd_secret_uuid": value => $rbd_secret_uuid;
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"${name}/rados_connect_timeout": value => $rados_connect_timeout;
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"${name}/rados_connection_interval": value => $rados_connection_interval;
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"${name}/rados_connection_retries": value => $rados_connection_retries;
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"${name}/rbd_store_chunk_size": value => $rbd_store_chunk_size;
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"${name}/rbd_cluster_name": value => $rbd_cluster_name_real;
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"${name}/report_dynamic_total_capacity": value => $report_dynamic_total_capacity;
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"${name}/rbd_exclusive_cinder_pool": value => $rbd_exclusive_cinder_pool;
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"${name}/report_discard_supported": value => true;
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}
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if $manage_volume_type {
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cinder_type { $volume_backend_name:
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ensure => present,
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properties => ["volume_backend_name=${volume_backend_name}"],
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}
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}
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# Avoid colliding with code in backends.pp
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unless defined(Cinder_config["${name}/backend_host"]) {
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if $backend_host {
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cinder_config {
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"${name}/backend_host": value => $backend_host;
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}
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} else {
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cinder_config {
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"${name}/backend_host": value => "rbd:${rbd_pool}";
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}
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}
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}
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ensure_packages( 'ceph-common', {
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ensure => present,
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name => $::cinder::params::ceph_common_package_name,
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tag => 'cinder-support-package'})
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create_resources('cinder_config', $extra_options)
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case $facts['os']['family'] {
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'Debian': {
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$override_line = "CEPH_ARGS=\"--id ${rbd_user}\""
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$override_match = '^CEPH_ARGS='
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}
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'RedHat': {
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$override_line = "export CEPH_ARGS=\"--id ${rbd_user}\""
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$override_match = '^export CEPH_ARGS='
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}
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default: {
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fail("unsupported osfamily ${facts['os']['family']}")
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}
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}
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# Creates an empty file if it doesn't yet exist
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ensure_resource('file', $::cinder::params::ceph_init_override, {'ensure' => 'present'})
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file_line { "set initscript env ${name}":
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line => $override_line,
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path => $::cinder::params::ceph_init_override,
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notify => Anchor['cinder::service::begin'],
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}
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}
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