Clean up devstack plugin after LVM driver removal

Devstack plugin has some logic, specific to LVM driver,
due to removal of LVM driver this logic can and should be removed.

Partially implements blueprint remove-lvm-driver

Change-Id: Ife67f954f665ad5c2331f9399e66525a8f4ac743

contrib/devstack/README.rst

@@ -12,8 +12,6 @@ $ cp lib/manila ${DEVSTACK_DIR}/lib
 
 $ cp extras.d/70-manila.sh ${DEVSTACK_DIR}/extras.d
 
-note: 70-manila.sh uses simple lvm-driver without multitenancy support.
-
 To configure devstack to run manila:
 
 $ cd ${DEVSTACK_DIR}

contrib/devstack/lib/manila

@@ -32,11 +32,6 @@ MANILA_BRANCH=master
 MANILACLIENT_REPO=${MANILA_GIT_BASE}/${MANILA_REPO_ROOT}/python-manilaclient.git
 MANILACLIENT_BRANCH=master
 
-SHARE_BACKING_FILE_SIZE=${SHARE_BACKING_FILE_SIZE:-8400M}
-
-# set up default driver
-MANILA_DRIVER=${MANILA_DRIVER:-default}
-
 # set up default directories
 MANILA_DIR=${MANILA_DIR:=$DEST/manila}
 MANILACLIENT_DIR=${MANILACLIENT_DIR:=$DEST/python-manilaclient}
@@ -72,16 +67,11 @@ MANILA_SHARE_BACKEND1_NAME=${MANILA_SHARE_BACKEND1_NAME:-BACKEND1}
 MANILA_BACKEND2_CONFIG_GROUP_NAME=${MANILA_BACKEND2_CONFIG_GROUP_NAME:-backend2}
 MANILA_SHARE_BACKEND2_NAME=${MANILA_SHARE_BACKEND2_NAME:-BACKEND2}
 
-SHARE_GROUP=${SHARE_GROUP:-stack-shares}
 SHARE_NAME_PREFIX=${SHARE_NAME_PREFIX:-share-}
-SHARE_EXPORT_IP=${SHARE_EXPORT_IP:-$HOST_IP}
-#SHARE_DRIVER=${SHARE_DRIVER:-manila.share.drivers.lvm.LVMShareDriver}
 SHARE_DRIVER=${SHARE_DRIVER:-manila.share.drivers.generic.GenericShareDriver}
 
 MANILA_SCHEDULER_DRIVER=${MANILA_SCHEDULER_DRIVER:-manila.scheduler.filter_scheduler.FilterScheduler}
 
-CIFS_HELPER=${CIFS_HELPER:-manila.share.drivers.lvm.CIFSNetConfHelper}
-
 eval USER_HOME=~
 
 # These are used by generic driver
@@ -97,48 +87,12 @@ MANILA_SERVICE_VM_FLAVOR_RAM=${MANILA_SERVICE_VM_FLAVOR_RAM:-64}
 MANILA_SERVICE_VM_FLAVOR_DISK=${MANILA_SERVICE_VM_FLAVOR_DISK:-0}
 MANILA_SERVICE_VM_FLAVOR_VCPUS=${MANILA_SERVICE_VM_FLAVOR_VCPUS:-1}
 
-function _clean_share_group {
-   local vg=$1
-   local vg_prefix=$2
-   # Clean out existing shares
-   for lv in `sudo lvs --noheadings -o lv_name $vg`; do
-       # vg_prefix prefixes the LVs we want
-       if [[ "${lv#$vg_prefix}" != "$lv" ]]; then
-           sudo umount $MANILA_MNT_DIR/$lv
-           sudo lvremove -f $vg/$lv
-           sudo rm -rf $MANILA_MNT_DIR/$lv
-       fi
-   done
-}
-
-# _clean_share_group removes all manila shares from the specified shares group
-_clean_share_group $SHARE_GROUP $SHARE_NAME_PREFIX
-
-function _clean_manila_lvm_backing_file {
-    local vg=$1
-
-    # if there is no logical volume left, it's safe to attempt a cleanup
-    # of the backing file
-    if [ -z "`sudo lvs --noheadings -o lv_name $vg`" ]; then
-        # if the backing physical device is a loop device, it was probably setup by devstack
-        VG_DEV=$(sudo losetup -j $DATA_DIR/${vg}-backing-file | awk -F':' '/backing-file/ { print $1}')
-        if [[ -n "$VG_DEV" ]]; then
-            sudo losetup -d $VG_DEV
-            rm -f $DATA_DIR/${vg}-backing-file
-        fi
-    fi
-}
-
 # cleanup_manila - Remove residual data files, anything left over from previous
 # runs that a clean run would need to clean up
 function cleanup_manila {
-    # ensure the volume group is cleared up because fails might
+    # This is placeholder.
-    # leave dead volumes in the group
+    # All stuff, that are created by Generic driver will be cleaned up by other services.
-
+    :
-    # Campsite rule: leave behind a share volume group at least as clean as we found it
-    # _clean_share_group $SHARE_GROUP $SHARE_NAME_PREFIX
-    _clean_share_group $SHARE_GROUP $SHARE_NAME_PREFIX
-    _clean_manila_lvm_backing_file $SHARE_GROUP
 }
 
 function add_share_backend {
@@ -214,16 +168,12 @@ function configure_manila {
     iniset $MANILA_CONF DEFAULT debug True
     iniset $MANILA_CONF DEFAULT verbose True
     iniset $MANILA_CONF DEFAULT scheduler_driver $MANILA_SCHEDULER_DRIVER
-    iniset $MANILA_CONF DEFAULT share_export_ip $SHARE_EXPORT_IP
-    iniset $MANILA_CONF DEFAULT share_volume_group $SHARE_GROUP
     iniset $MANILA_CONF DEFAULT share_name_template ${SHARE_NAME_PREFIX}%s
-    iniset $MANILA_CONF DEFAULT iscsi_helper tgtadm
     iniset $MANILA_CONF DEFAULT sql_connection `database_connection_url manila`
     iniset $MANILA_CONF DEFAULT api_paste_config $MANILA_API_PASTE_INI
     iniset $MANILA_CONF DEFAULT rootwrap_config $MANILA_CONF_DIR/rootwrap.conf
     iniset $MANILA_CONF DEFAULT osapi_share_extension manila.api.openstack.share.contrib.standard_extensions
     iniset $MANILA_CONF DEFAULT state_path $MANILA_STATE_PATH
-    iniset $MANILA_CONF DEFAULT share_lvm_helpers CIFS=$CIFS_HELPER,NFS=manila.share.drivers.lvm.NFSHelper
 
     iniset $MANILA_CONF DEFAULT nova_admin_password $SERVICE_PASSWORD
     iniset $MANILA_CONF DEFAULT cinder_admin_password $SERVICE_PASSWORD
@@ -368,30 +318,6 @@ function init_manila {
         $MANILA_BIN_DIR/manila-manage db sync
     fi
 
-    if is_service_enabled m-shr; then
-        # Configure a default volume group called '`stack-shares`' for the share
-        # service if it does not yet exist.  If you don't wish to use a file backed
-        # volume group, create your own volume group called ``stack-volumes`` before
-        # invoking ``stack.sh``.
-        #
-        # By default, the backing file is 8G in size, and is stored in ``/opt/stack/data``.
-
-        if ! sudo vgs $SHARE_GROUP; then
-            SHARE_BACKING_FILE=${SHARE_BACKING_FILE:-$DATA_DIR/${SHARE_GROUP}-backing-file}
-            # Only create if the file doesn't already exists
-            [[ -f $SHARE_BACKING_FILE ]] || truncate -s $SHARE_BACKING_FILE_SIZE $SHARE_BACKING_FILE
-            DEV=`sudo losetup -f --show $SHARE_BACKING_FILE`
-            # Only create if the loopback device doesn't contain $SHARE_GROUP
-            if ! sudo vgs $SHARE_GROUP; then sudo vgcreate $SHARE_GROUP $DEV; fi
-        fi
-
-        mkdir -p $MANILA_STATE_PATH/shares
-
-        if sudo vgs $SHARE_GROUP; then
-            _clean_share_group $SHARE_GROUP $SHARE_NAME_PREFIX
-        fi
-    fi
-
     # Create cache dir
     sudo mkdir -p $MANILA_AUTH_CACHE_DIR
     sudo chown $STACK_USER $MANILA_AUTH_CACHE_DIR
@@ -402,26 +328,10 @@ function init_manila {
 function install_manila {
     git_clone $MANILA_REPO $MANILA_DIR $MANILA_BRANCH
     git_clone $MANILACLIENT_REPO $MANILACLIENT_DIR $MANILACLIENT_BRANCH
-
-    if is_service_enabled m-shr; then
-        if is_ubuntu; then
-            sudo apt-get install -y nfs-kernel-server nfs-common samba
-        elif is_fedora; then
-            sudo yum install -y nfs-utils nfs-utils-lib samba
-        fi
-    fi
 }
 
 # start_manila - Start running processes, including screen
 function start_manila {
-    samba_daemon_name=smbd
-    if is_service_enabled m-shr; then
-        if is_fedora; then
-            samba_daemon_name=smb
-        fi
-        stop_service $samba_daemon_name || echo "Couldn't stop '$samba_daemon_name' service"
-    fi
-
     screen_it m-api "cd $MANILA_DIR && $MANILA_BIN_DIR/manila-api --config-file $MANILA_CONF"
     screen_it m-shr "cd $MANILA_DIR && $MANILA_BIN_DIR/manila-share --config-file $MANILA_CONF"
     screen_it m-sch "cd $MANILA_DIR && $MANILA_BIN_DIR/manila-scheduler --config-file $MANILA_CONF"