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-rwxr-xr-xextras/hook-scripts/start/post/S29CTDBsetup.sh77
1 files changed, 77 insertions, 0 deletions
diff --git a/extras/hook-scripts/start/post/S29CTDBsetup.sh b/extras/hook-scripts/start/post/S29CTDBsetup.sh
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+++ b/extras/hook-scripts/start/post/S29CTDBsetup.sh
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+#! /bin/bash
+# RHS-2.0 only
+# - The script mounts the 'meta-vol' on start 'event' on a known
+# directory (eg. /gluster/lock)
+# - Adds the necessary configuration changes for ctdb in smb.conf and
+# restarts smb service.
+# - P.S: There are other 'tasks' that need to be done outside this script
+# to get CTDB based failover up and running.
+
+SMB_CONF=/etc/samba/smb.conf
+
+CTDB_MNT=/gluster/lock
+PROGNAME="ctdb"
+OPTSPEC="volname:"
+VOL=
+# $META is the volume that will be used by CTDB as a shared filesystem.
+# It is not desirable to use this volume for storing 'data' as well.
+# META is set to 'all' (viz. a keyword and hence not a legal volume name)
+# to prevent the script from running for volumes it was not intended.
+# User needs to set META to the volume that serves CTDB lockfile.
+META="all"
+
+function parse_args () {
+ ARGS=$(getopt -l $OPTSPEC -name $PROGNAME $@)
+ eval set -- "$ARGS"
+
+ while true; do
+ case $1 in
+ --volname)
+ shift
+ VOL=$1
+ ;;
+
+ *)
+ shift
+ break
+ ;;
+
+ esac
+
+ shift
+ done
+}
+
+function add_glusterfs_ctdb_options () {
+ PAT="Share Definitions"
+ GLUSTER_CTDB_CONFIG="# ctdb config for glusterfs\n\tclustering = yes\n\tidmap backend = tdb2\n"
+ exists=`grep "clustering = yes" "$SMB_CONF"`
+ if [ "$exists" == "" ]
+ then
+ sed -i /"$PAT"/i\ "$GLUSTER_CTDB_CONFIG" "$SMB_CONF"
+ fi
+}
+
+function add_fstab_entry () {
+ volname=$1
+ mntpt=$2
+ mntent="`hostname`:/$volname $mntpt glusterfs defaults,transport=tcp 0 0"
+ exists=`grep "^$mntent" /etc/fstab`
+ if [ "$exists" == "" ]
+ then
+ echo "$mntent" >> /etc/fstab
+ fi
+}
+
+parse_args $@
+if [ "$META" = "$VOL" ]
+then
+ #expects ctdb service to manage smb
+ service smb stop
+ add_glusterfs_ctdb_options
+ mkdir -p $CTDB_MNT
+ sleep 5
+ mount -t glusterfs `hostname`:$VOL "$CTDB_MNT" && \
+ add_fstab_entry $VOL $CTDB_MNT
+ chkconfig ctdb on
+fi