NFS-Ganesha: Volume set option for managing NFS-Ganesha exports.

A dummy translator has been introduced as a place
holder for functions related to managing NFS-Ganesha
exports. A volume set option is introduced to
manage volume level exports.

gluster vol set <volname> ganesha.enable ON/OFF

1. gluster volume set <volname> ganesha.enable ON

It creates the export config file with a unique export ID.
Sends a DBus signal to export this volume dynamically.

2. gluster vol set <volname> ganesha.enable OFF

Unexports the specific volume. Deletes the specfic
config file related to the volume.

This change also removes the handling of the older
keys "nfs-ganesha.enable" and "nfs-ganesha.host"

Change-Id: I8d4a0b542326a6a0c8e4711600b106274d666587
BUG: 1188184
Signed-off-by: Meghana Madhusudhan <mmadhusu@redhat.com>
Reviewed-on: http://review.gluster.org/9585
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>

1 files changed, 20 insertions, 28 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c
index f20490423f6..c140e680261 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volgen.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c
@@ -3318,6 +3318,25 @@ client_graph_builder (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
                 }
         }
 
+        ret = dict_get_str_boolean (set_dict, "ganesha.enable", _gf_false);
+
+        if (ret == -1) {
+                gf_log (this->name, GF_LOG_WARNING, "setting ganesha.enable"
+                        "option failed.");
+                goto out;
+        }
+
+        if (ret) {
+                xl = volgen_graph_add (graph, "features/ganesha", volname);
+
+                if (!xl) {
+                        gf_log (this->name, GF_LOG_ERROR, "failed to add"
+                               "add features/ganesha to graph");
+                        ret = -1;
+                        goto out;
+                }
+        }
+
         /* add debug translators depending on the options */
         ret = check_and_add_debug_xl (graph, set_dict, volname,
                                       "client");
@@ -3535,35 +3554,8 @@ nfs_option_handler (volgen_graph_t *graph,
                         return -1;
         }
 
-          if (! strcmp (vme->option, "!nfs-ganesha.enable")) {
-                ret = gf_asprintf (&aa, "nfs-ganesha.%s.enable",
-                                        volinfo->volname);
-
-                if (ret != -1) {
-                        ret = xlator_set_option (xl, aa, vme->value);
-                        GF_FREE (aa);
-                }
-
-                if (ret)
-                        return -1;
-        }
-
-         if (! strcmp (vme->option, "!nfs-ganesha.host")) {
-                ret = gf_asprintf (&aa, "nfs-ganesha.%s.host",
-                                        volinfo->volname);
-
-                if (ret != -1) {
-                        ret = xlator_set_option (xl, aa, vme->value);
-                        GF_FREE (aa);
-                }
-
-                if (ret)
-                        return -1;
-        }
-
-
 
-        if ( (strcmp (vme->voltype, "nfs/server") == 0) &&
+      if ((strcmp (vme->voltype, "nfs/server") == 0) &&
              (vme->option && vme->option[0]!='!') ) {
                ret = xlator_set_option (xl, vme->option, vme->value);
                 if (ret)