cli/hooks : Add volume set options to enable/disable nfs-ganesha support.

1. gluster volume set nfs-ganesha.enable ON/OFF
If the option is set to ON, the volume field in the nfs-ganesha configuartion file is
edited. Gluster-nfs is disabled on that volume and the volume is exported using
nfs-ganesha.

2.gluster volume set nfs-ganesha.host IP
This is used to provide the IP of the nfs-ganesha host.

Note : nfs-ganesha.host MUST be set before using nfs-ganesha.enable ON

The switch from gluster-nfs to nfs-ganesha is mostly done by the hook-scripts
in the post phase of the 'set' option. As a result, gluster volume reset does not
function as it is expected to. By default, nfs-ganesha will be set to off but the
process  will not be killed.

Hence, a few changes have to be made post 'reset' option as well. Those changes
also have been added.

Change-Id: I7fdc14ee49d1724af96eda33c6a3ec08b1020788
BUG: 1092283
Signed-off-by: Meghana <mmadhusu@redhat.com>
Reviewed-on: http://review.gluster.org/7321
Reviewed-by: Raghavendra Talur <rtalur@redhat.com>
Reviewed-by: Santosh Pradhan <spradhan@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/extras/hook-scripts/reset/post/S31ganesha-reset.sh b/extras/hook-scripts/reset/post/S31ganesha-reset.sh
new file mode 100755
index 00000000000..68411e4bd95
--- /dev/null
+++ b/extras/hook-scripts/reset/post/S31ganesha-reset.sh
@@ -0,0 +1,38 @@
+#/bin/bash
+PROGNAME="Sganesha-reset"
+OPTSPEC="volname:"
+VOL=
+
+function parse_args () {
+        ARGS=$(getopt -l $OPTSPEC  -o "o" -name $PROGNAME $@)
+        eval set -- "$ARGS"
+        case $1 in
+            --volname)
+               shift
+               VOL=$1
+                ;;
+        esac
+}
+
+function is_volume_started () {
+        volname=$1
+        echo "$(grep status /var/lib/glusterd/vols/"$volname"/info |\
+                cut -d"=" -f2)"
+}
+
+parse_args $@
+if ps aux | grep -q "[g]anesha.nfsd"
+        then
+        kill -s TERM `cat /var/run/ganesha.pid`
+        sleep 10
+        rm -rf /var/lib/ganesha/exports
+        rm -rf /var/lib/ganesha/export_added
+        sed -i /conf/d /var/lib/ganesha/nfs-ganesha.conf
+        if [ "1" = $(is_volume_started "$VOL") ];
+                then
+                gluster volume start $VOL force
+        fi
+fi
+
+
+