feature #1613: Monitor for ceph datastore

install.sh

@@ -1009,6 +1009,7 @@ DATASTORE_DRIVER_CEPH_SCRIPTS="src/datastore_mad/remotes/ceph/cp \
                          src/datastore_mad/remotes/ceph/mkfs \
                          src/datastore_mad/remotes/ceph/stat \
                          src/datastore_mad/remotes/ceph/rm \
+                         src/datastore_mad/remotes/ceph/monitor \
                          src/datastore_mad/remotes/ceph/clone \
                          src/datastore_mad/remotes/ceph/ceph.conf"
 

src/datastore_mad/remotes/ceph/monitor

@@ -0,0 +1,72 @@
+#!/bin/bash
+
+# -------------------------------------------------------------------------- #
+# Copyright 2002-2013, OpenNebula Project (OpenNebula.org), C12G Labs        #
+#                                                                            #
+# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
+# not use this file except in compliance with the License. You may obtain    #
+# a copy of the License at                                                   #
+#                                                                            #
+# http://www.apache.org/licenses/LICENSE-2.0                                 #
+#                                                                            #
+# Unless required by applicable law or agreed to in writing, software        #
+# distributed under the License is distributed on an "AS IS" BASIS,          #
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
+# See the License for the specific language governing permissions and        #
+# limitations under the License.                                             #
+#--------------------------------------------------------------------------- #
+
+###############################################################################
+# This script is used to monitor the free and used space of a datastore
+###############################################################################
+
+# -------- Set up the environment to source common tools & conf ------------
+
+if [ -z "${ONE_LOCATION}" ]; then
+    LIB_LOCATION=/usr/lib/one
+else
+    LIB_LOCATION=$ONE_LOCATION/lib
+fi
+
+. $LIB_LOCATION/sh/scripts_common.sh
+
+DRIVER_PATH=$(dirname $0)
+source ${DRIVER_PATH}/../libfs.sh
+source ${DRIVER_PATH}/ceph.conf
+
+# -------- Get datastore arguments from OpenNebula core ------------
+
+DRV_ACTION=$1
+ID=$2
+
+XPATH="${DRIVER_PATH}/../xpath.rb -b $DRV_ACTION"
+
+unset i XPATH_ELEMENTS
+
+while IFS= read -r -d '' element; do
+    XPATH_ELEMENTS[i++]="$element"
+done < <($XPATH     /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/HOST \
+                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/POOL_NAME)
+
+HOST="${XPATH_ELEMENTS[0]}"
+POOL_NAME="${XPATH_ELEMENTS[1]}"
+
+# ------------ Compute datastore usage -------------
+
+MONITOR_SCRIPT=$(cat <<EOF
+$SUDO $RADOS df | $AWK '{
+    if (\$1 == "total") {
+
+        space = int(\$3/1024)
+
+        if      (\$2 == "used")  {var = "USED_MB" }
+        else if (\$2 == "avail") {var = "FREE_MB" }
+        else if (\$2 == "space") {var = "TOTAL_MB" }
+
+        print var "=" space
+    }
+}'
+EOF
+)
+
+ssh_monitor_and_log $HOST "$MONITOR_SCRIPT" | tr ' ' '\n'

src/mad/sh/scripts_common.sh

@@ -36,6 +36,7 @@ MKFS=mkfs
 MKISOFS=genisoimage
 MKSWAP=mkswap
 QEMU_IMG=qemu-img
+RADOS=rados
 RBD=rbd
 READLINK=readlink
 RM=rm
@@ -334,7 +335,7 @@ EOF`
 
     if [ $SSH_EXEC_RC -ne 0 ]; then
         log_error "Command \"$2\" failed: $SSH_EXEC_OUT"
-        error_message "Cannot moinitor $1"
+        error_message "Cannot monitor $1"
 
         exit $SSH_EXEC_RC
     fi