send the CHILD_DOWN event also to fuse

and start the fuse thread in CHILD_DOWN event too.

Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 2005 (Mounting Gluster volume with RO bricks hangs)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2005

2 files changed, 13 insertions, 33 deletions

diff --git a/libglusterfs/src/defaults.c b/libglusterfs/src/defaults.c
index 00f84694a06..ec41ce92626 100644
--- a/libglusterfs/src/defaults.c
+++ b/libglusterfs/src/defaults.c
@@ -1219,10 +1219,11 @@ default_notify (xlator_t *this, int32_t event, void *data, ...)
         break;
         case GF_EVENT_CHILD_CONNECTING:
         case GF_EVENT_CHILD_MODIFIED:
+        case GF_EVENT_CHILD_DOWN:
         case GF_EVENT_CHILD_UP:
         {
                 xlator_list_t *parent = this->parents;
-                /* Handle the case of CHILD_UP specially, send it to fuse */
+                /* Handle case of CHILD_* event specially, send it to fuse */
                 if (!parent && this->ctx && this->ctx->master)
                         xlator_notify (this->ctx->master, event, this->graph, NULL);
 
@@ -1234,7 +1235,6 @@ default_notify (xlator_t *this, int32_t event, void *data, ...)
                 }
         }
         break;
-        case GF_EVENT_CHILD_DOWN:
         default:
         {
                 xlator_list_t *parent = this->parents;
diff --git a/xlators/mount/fuse/src/fuse-bridge.c b/xlators/mount/fuse/src/fuse-bridge.c
index affa37d5b31..f988c0102ce 100644
--- a/xlators/mount/fuse/src/fuse-bridge.c
+++ b/xlators/mount/fuse/src/fuse-bridge.c
@@ -3324,21 +3324,10 @@ notify (xlator_t *this, int32_t event, void *data, ...)
 
                 break;
 
+        case GF_EVENT_CHILD_UP:
+        case GF_EVENT_CHILD_DOWN:
         case GF_EVENT_CHILD_CONNECTING:
         {
-                if (!private->fuse_thread_started) {
-                        private->fuse_thread_started = 1;
-
-                        ret = pthread_create (&private->fuse_thread, NULL,
-                                              fuse_thread_proc, this);
-                        if (ret != 0) {
-                                gf_log (this->name, GF_LOG_DEBUG,
-                                        "pthread_create() failed (%s)",
-                                        strerror (errno));
-                                break;
-                        }
-                }
-
                 if (data) {
                         graph = data;
                         ret = fuse_graph_setup (this, graph);
@@ -3347,17 +3336,15 @@ notify (xlator_t *this, int32_t event, void *data, ...)
                                         "failed to setup the graph");
                 }
 
-                break;
-        }
-        case GF_EVENT_CHILD_UP:
-        {
-                /* set priv->active_subvol */
-                /* set priv->first_lookup = 1 */
-                graph = data;
-                ret = fuse_graph_setup (this, graph);
-                if (ret)
-                        gf_log (this->name, GF_LOG_WARNING,
-                                "failed to setup the graph");
+                if (event == GF_EVENT_CHILD_UP) {
+
+                        pthread_mutex_lock (&private->sync_mutex);
+                        {
+                                private->child_up = 1;
+                                pthread_cond_broadcast (&private->sync_cond);
+                        }
+                        pthread_mutex_unlock (&private->sync_mutex);
+                }
 
                 if (!private->fuse_thread_started) {
                         private->fuse_thread_started = 1;
@@ -3372,13 +3359,6 @@ notify (xlator_t *this, int32_t event, void *data, ...)
                         }
                 }
 
-                pthread_mutex_lock (&private->sync_mutex);
-                {
-                        private->child_up = 1;
-                        pthread_cond_broadcast (&private->sync_cond);
-                }
-                pthread_mutex_unlock (&private->sync_mutex);
-
                 break;
         }