svs:implement CHILD UP notify in snapview-server

protocol/server expects a child up event to successfully
configure the graph. In the actual brick graph, posix is
the one who decide to initiate the notification to the parent
that the child is up.

But in snapd graph there is no posix, hence the child up
notification was missing.

Ideally each xlator should initiate the child up event whenever
it see's that this is the last child xlator.

Change-Id: Icccdb9fe920c265cadaf9f91c040a0831b4b78fc
BUG: 1467513
Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>
Reviewed-on: https://review.gluster.org/17689
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/xlators/features/snapview-server/src/snapview-server.c b/xlators/features/snapview-server/src/snapview-server.c
index 5cee414414b..22b0e1c6507 100644
--- a/xlators/features/snapview-server/src/snapview-server.c
+++ b/xlators/features/snapview-server/src/snapview-server.c
@@ -2180,6 +2180,21 @@ out:
         return 0;
 }
 
+int32_t
+notify (xlator_t *this, int32_t event, void *data, ...) {
+        switch (event) {
+
+        case GF_EVENT_PARENT_UP:
+        {
+                /* Tell the parent that snapview-server xlator is up */
+                default_notify (this, GF_EVENT_CHILD_UP, data);
+        }
+        break;
+        default:
+                break;
+        }
+        return 0;
+}
 
 int32_t
 mem_acct_init (xlator_t *this)