Setup the Cinder image-volume cache by default
This will have devstack setup the Cinder internal tenant and generic
image-volume cache by default. If left alone it will use reasonable
defaults.
More information about configuration options and the cache can be found
here: http://docs.openstack.org/admin-guide/blockstorage_image_volume_cache.html
As part of this we switch the default lvm type to thin so it will
work more efficiently with the image cache.
Change-Id: I0b2cc261736f32d38d43c60254f0dc7225b24c01
Implements: blueprint cinder-image-volume-cache
diff --git a/lib/cinder b/lib/cinder
index 607a6f8..fe49416 100644
--- a/lib/cinder
+++ b/lib/cinder
@@ -68,9 +68,8 @@
CINDER_SERVICE_LISTEN_ADDRESS=${CINDER_SERVICE_LISTEN_ADDRESS:-$SERVICE_LISTEN_ADDRESS}
# What type of LVM device should Cinder use for LVM backend
-# Defaults to default, which is thick, the other valid choice
-# is thin, which as the name implies utilizes lvm thin provisioning.
-CINDER_LVM_TYPE=${CINDER_LVM_TYPE:-default}
+# Defaults to thin. For thick provisioning change to 'default'
+CINDER_LVM_TYPE=${CINDER_LVM_TYPE:-thin}
# Default backends
# The backend format is type:name where type is one of the supported backend
@@ -128,6 +127,17 @@
CINDER_NOVA_CATALOG_INFO=${CINDER_NOVA_CATALOG_INFO:-compute:nova:publicURL}
CINDER_NOVA_CATALOG_ADMIN_INFO=${CINDER_NOVA_CATALOG_ADMIN_INFO:-compute:nova:adminURL}
+# Environment variables to configure the image-volume cache
+CINDER_IMG_CACHE_ENABLED=${CINDER_IMG_CACHE_ENABLED:-True}
+
+# For limits, if left unset, it will use cinder defaults of 0 for unlimited
+CINDER_IMG_CACHE_SIZE_GB=${CINDER_IMG_CACHE_SIZE_GB:-}
+CINDER_IMG_CACHE_SIZE_COUNT=${CINDER_IMG_CACHE_SIZE_COUNT:-}
+
+# Configure which cinder backends will have the image-volume cache, this takes the same
+# form as the CINDER_ENABLED_BACKENDS config option. By default it will
+# enable the cache for all cinder backends.
+CINDER_CACHE_ENABLED_FOR_BACKENDS=${CINDER_CACHE_ENABLED_FOR_BACKENDS:-$CINDER_ENABLED_BACKENDS}
# Functions
# ---------
@@ -293,6 +303,7 @@
if [[ -n "$default_name" ]]; then
iniset $CINDER_CONF DEFAULT default_volume_type ${default_name}
fi
+ configure_cinder_image_volume_cache
fi
if is_service_enabled swift; then
@@ -394,6 +405,8 @@
"$CINDER_SERVICE_PROTOCOL://$CINDER_SERVICE_HOST:$CINDER_SERVICE_PORT/v3/\$(project_id)s" \
"$CINDER_SERVICE_PROTOCOL://$CINDER_SERVICE_HOST:$CINDER_SERVICE_PORT/v3/\$(project_id)s" \
"$CINDER_SERVICE_PROTOCOL://$CINDER_SERVICE_HOST:$CINDER_SERVICE_PORT/v3/\$(project_id)s"
+
+ configure_cinder_internal_tenant
fi
}
@@ -573,6 +586,31 @@
:
}
+function configure_cinder_internal_tenant {
+ # Re-use the Cinder service account for simplicity.
+ iniset $CINDER_CONF DEFAULT cinder_internal_tenant_project_id $(get_or_create_project $SERVICE_PROJECT_NAME)
+ iniset $CINDER_CONF DEFAULT cinder_internal_tenant_user_id $(get_or_create_user "cinder")
+}
+
+function configure_cinder_image_volume_cache {
+ # Expect CINDER_CACHE_ENABLED_FOR_BACKENDS to be a list of backends
+ # similar to CINDER_ENABLED_BACKENDS with NAME:TYPE where NAME will
+ # be the backend specific configuration stanza in cinder.conf.
+ for be in ${CINDER_CACHE_ENABLED_FOR_BACKENDS//,/ }; do
+ local be_name=${be##*:}
+
+ iniset $CINDER_CONF $be_name image_volume_cache_enabled $CINDER_IMG_CACHE_ENABLED
+
+ if [[ -n $CINDER_IMG_CACHE_SIZE_GB ]]; then
+ iniset $CINDER_CONF $be_name image_volume_cache_max_size_gb $CINDER_IMG_CACHE_SIZE_GB
+ fi
+
+ if [[ -n $CINDER_IMG_CACHE_SIZE_COUNT ]]; then
+ iniset $CINDER_CONF $be_name image_volume_cache_max_count $CINDER_IMG_CACHE_SIZE_COUNT
+ fi
+ done
+}
+
# Restore xtrace
$_XTRACE_CINDER