From 0034cb44f43c669ea391ed3c0df2d98f1837d4d4 Mon Sep 17 00:00:00 2001
From: Bharat Kumar Kobagana <bharat.kobagana@redhat.com>
Date: Mon, 19 Jan 2015 12:43:03 +0530
Subject: [PATCH] Moved plugin code from glusterfs branch to master.

---
 devstack/plugin.sh | 144 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 devstack/plugin.sh

diff --git a/devstack/plugin.sh b/devstack/plugin.sh
new file mode 100644
index 0000000..38fbcc3
--- /dev/null
+++ b/devstack/plugin.sh
@@ -0,0 +1,144 @@
+# 60-glusterfs.sh - DevStack extras script to install GlusterFS
+# Functions to control the configuration and operation of the **GlusterFS** storage service
+
+# Dependencies:
+#
+# - ``functions`` file
+# - ``GLUSTERFS_DATA_DIR`` or ``DATA_DIR`` must be defined
+
+# ``stack.sh`` calls the entry points in this order:
+#
+# - install_glusterfs
+# - configure_glusterfs_cinder
+# - start_glusterfs
+# - stop_glusterfs
+# - cleanup_glusterfs
+
+# Defaults
+# --------
+
+# Set ``GLUSTERFS_DATA_DIR`` to the location of GlusterFS drives.
+# Default is the common DevStack data directory.
+GLUSTERFS_DATA_DIR=${GLUSTERFS_DATA_DIR:-/var/lib/glusterfs}
+GLUSTERFS_DISK_IMAGE=${DATA_DIR}/cinder/glusterfs.img
+
+# DevStack will create a loop-back disk formatted as XFS to store the
+# GlusterFS data. Set ``GLUSTERFS_LOOPBACK_DISK_SIZE`` to the disk size in
+# kilobytes.
+# Default is 4 gigabyte.
+GLUSTERFS_LOOPBACK_DISK_SIZE=${GLUSTERFS_LOOPBACK_DISK_SIZE:-4G}
+
+# Devstack will create GlusterFS shares to store Cinder volumes.
+# Those shares can be configured by seting CINDER_GLUSTERFS_SHARES.
+# By default CINDER_GLUSTERFS_SHARES="127.0.0.1:/vol1;127.0.0.1:/vol2"
+
+CINDER_GLUSTERFS_SHARES=${CINDER_GLUSTERFS_SHARES:-"127.0.0.1:/vol1;127.0.0.1:/vol2"}
+
+# Adding GlusterFS repo to CentOS / RHEL 7 platform.
+
+GLUSTERFS_CENTOS_REPO=${GLUSTERFS_CENTOS_REPO:-"http://download.gluster.org/pub/gluster/glusterfs/LATEST/CentOS/glusterfs-epel.repo"}
+
+# Functions
+# ------------
+
+# cleanup_glusterfs() - Remove residual data files, anything left over from previous
+# runs that a clean run would need to clean up
+function cleanup_glusterfs {
+    for share in $(echo $CINDER_GLUSTERFS_SHARES | sed "s/;/ /");  do
+        local mount_point=$(grep $share /proc/mounts | awk '{print $2}')
+        if [[ -n $mount_point ]]; then
+            sudo umount $mount_point
+        fi
+    done
+
+    if [[ -e ${GLUSTERFS_DISK_IMAGE} ]]; then
+        sudo rm -f ${GLUSTERFS_DISK_IMAGE}
+    fi
+
+    for share in $(echo $CINDER_GLUSTERFS_SHARES | sed "s/;/ /"); do
+        GLUSTERFS_VOLUMES+=,$(echo $share | cut -d/ -f2);
+    done
+
+    for vol_name in $(echo $GLUSTERFS_VOLUMES | sed "s/,/ /g"); do
+        sudo gluster --mode=script volume stop $vol_name
+        sudo gluster --mode=script volume delete $vol_name
+    done
+
+    uninstall_package glusterfs-server
+    if egrep -q ${GLUSTERFS_DATA_DIR} /proc/mounts; then
+        sudo umount ${GLUSTERFS_DATA_DIR}
+    fi
+    sudo rm -rf ${GLUSTERFS_DATA_DIR}
+}
+
+# configure_glusterfs_cinder() - Create GlusterFS volumes
+function configure_glusterfs_cinder {
+    for share in $(echo $CINDER_GLUSTERFS_SHARES | sed "s/;/ /"); do
+        GLUSTERFS_VOLUMES+=,$(echo $share | cut -d/ -f2);
+    done
+
+    if is_fedora; then
+        stop_glusterfs
+        start_glusterfs
+    fi
+    # create a backing file disk
+    create_disk ${GLUSTERFS_DISK_IMAGE} ${GLUSTERFS_DATA_DIR} ${GLUSTERFS_LOOPBACK_DISK_SIZE}
+
+    for vol_name in $(echo $GLUSTERFS_VOLUMES | sed "s/,/ /g"); do
+        sudo mkdir -p ${GLUSTERFS_DATA_DIR}/$vol_name
+        sudo gluster --mode=script volume \
+            create $vol_name $(hostname):${GLUSTERFS_DATA_DIR}/$vol_name
+        sudo gluster --mode=script volume start $vol_name
+        sudo gluster --mode=script volume set $vol_name server.allow-insecure on
+    done
+}
+
+# install_glusterfs() - Collect source and prepare
+function install_glusterfs {
+    if [[ ${DISTRO} =~ rhel7 ]] && [[ ! -f /etc/yum.repos.d/glusterfs-epel.repo ]]; then
+        sudo  wget $GLUSTERFS_CENTOS_REPO -O /etc/yum.repos.d/glusterfs-epel.repo
+    fi
+    install_package glusterfs-server
+    install_package xfsprogs
+}
+
+# start_glusterfs() - Start running processes
+function start_glusterfs {
+    if is_ubuntu; then
+        sudo service glusterfs-server start
+    else
+        sudo service glusterd start
+    fi
+}
+
+# stop_glusterfs() - Stop running processes
+function stop_glusterfs {
+    if is_ubuntu; then
+        sudo service glusterfs-server stop
+    else
+        sudo service glusterd stop
+    fi
+}
+
+if [[ "$1" == "stack" && "$2" == "pre-install" ]]; then
+    echo_summary "Installing GlusterFS"
+    install_glusterfs
+elif [[ "$1" == "stack" && "$2" == "post-config" ]]; then
+    if is_service_enabled cinder; then
+        echo_summary "Configuring Cinder for GlusterFS"
+        configure_glusterfs_cinder
+    fi
+fi
+
+if [[ "$1" == "unstack" ]]; then
+    cleanup_glusterfs
+    stop_glusterfs
+fi
+
+if [[ "$1" == "clean" ]]; then
+    cleanup_glusterfs
+fi
+
+## Local variables:
+## mode: shell-script
+## End: