Put initial devstack plugin for bdd

devstack/plugin.sh

@@ -0,0 +1,88 @@
+#!/bin/bash
+#
+# lib/cinder_backends/bdd
+# Configure the BlockDeviceDriver backend
+
+# Enable with:
+#
+#   CINDER_ENABLED_BACKENDS+=,bdd:<volume-type-name>
+
+# Dependencies:
+#
+# - ``functions`` file
+# - ``cinder`` configurations
+
+# DATA_DIR
+# CINDER_BLOCK_DEVICES
+# CINDER_BDD_BACKING_FILE_NAME
+# CINDER_BDD_DEVICES_COUNT
+# CINDER_BDD_DEVICES_SIZE
+# CINDER_CONF
+
+# configure_cinder_backend_bdd - Configure Cinder for BlockDeviceDriver backends
+# cleanup_cinder_backend_bdd - Clean created files, devices, etc
+
+# Save trace setting
+BDD_XTRACE=$(set +o | grep xtrace)
+set +o xtrace
+
+CINDER_BDD_BACKING_FILE_NAME=${BDD_BACKING_FILE_NAME:-bdd-backing-file}
+CINDER_BDD_DEVICES=${CINDER_BDD_DEVICES:-default}
+CINDER_BDD_DEVICES_COUNT=${CINDER_BDD_DEVICES_COUNT:-4}
+CINDER_BDD_DEVICES_SIZE=${CINDER_BDD_DEVICES_SIZE:-4100M}
+
+function _init_cinder_bdd_device {
+    local backing_file=$DATA_DIR/$CINDER_BDD_BACKING_FILE_NAME-$1
+    [[ -f $backing_file ]] || truncate -s $CINDER_BDD_DEVICES_SIZE $backing_file
+    echo `sudo losetup -f --show $backing_file`
+}
+
+function _init_cinder_bdd_devices {
+    local idx=0
+    CINDER_BDD_DEVICES=""
+    while [ $idx -lt $CINDER_BDD_DEVICES_COUNT ]; do
+        local dev_name=`_init_cinder_bdd_device $idx`
+        CINDER_BDD_DEVICES=$CINDER_BDD_DEVICES$dev_name,
+        let idx=idx+1
+    done
+    CINDER_BDD_DEVICES=${CINDER_BDD_DEVICES%?}
+}
+
+function _cleanup_cinder_bdd_device {
+    local idx=$1
+    local backing_file=$DATA_DIR/$CINDER_BDD_BACKING_FILE_NAME-$idx
+    if [[ -n "$backing_file" ]] && [[ -e "$backing_file" ]]; then
+        local vg_dev=$(sudo losetup -j $backing_file | awk -F':' '/'$CINDER_BDD_BACKING_FILE_NAME-$idx'/ { print $1}')
+        sudo losetup -d $vg_dev
+        rm -f $backing_file
+    fi
+}
+
+# cleanup_cinder_backend_bdd - Clean created files, devices, etc
+function cleanup_cinder_backend_bdd {
+    local idx=0
+    while [ $idx -lt $CINDER_BDD_DEVICES_COUNT ]; do
+        _cleanup_cinder_bdd_device $idx
+        let idx=idx+1
+    done
+}
+
+# configure_cinder_backend_bdd - Set config files, create data dirs, etc
+function configure_cinder_backend_bdd {
+    local be_name=$1
+
+    if [ "$CINDER_BDD_DEVICES" = "default" ]; then
+        _init_cinder_bdd_devices
+    fi
+
+    iniset $CINDER_CONF $be_name volume_backend_name $be_name
+    iniset $CINDER_CONF $be_name volume_driver "cinder.volume.drivers.block_device.BlockDeviceDriver"
+    iniset $CINDER_CONF $be_name available_devices $CINDER_BDD_DEVICES
+}
+
+# Restore xtrace
+$BDD_XTRACE
+
+# Local variables:
+# mode: shell-script
+# End: