glusterd: stop all the daemons services on peer detach

Backport of:  http://review.gluster.org/#/c/11509/

Currently glusterd is not stopping all the deamon service on peer detach

With this fix it will do peer detach cleanup properlly and will stop all
the daemon which was running before peer detach on the node.

Change-Id: Ifed403ed09187e84f2a60bf63135156ad1f15775
BUG: 1238706
Signed-off-by: Gaurav Kumar Garg <ggarg@redhat.com>
Reviewed-on: http://review.gluster.org/11971
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>

2 files changed, 41 insertions, 15 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-messages.h b/xlators/mgmt/glusterd/src/glusterd-messages.h
index addd3e215a9..d67837240e4 100644
--- a/xlators/mgmt/glusterd/src/glusterd-messages.h
+++ b/xlators/mgmt/glusterd/src/glusterd-messages.h
@@ -4594,6 +4594,22 @@
  */
 #define GD_MSG_SVC_STOP_SUCCESS                     (GLUSTERD_COMP_BASE + 568)
 
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ *
+ */
+#define GD_MSG_PARAM_NULL                           (GLUSTERD_COMP_BASE + 569)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ *
+ */
+#define GD_MSG_SVC_STOP_FAIL                        (GLUSTERD_COMP_BASE + 570)
+
 /*------------*/
 #define glfs_msg_end_x GLFS_MSGID_END, "Invalid: End of messages"
 #endif /* !_GLUSTERD_MESSAGES_H_ */
diff --git a/xlators/mgmt/glusterd/src/glusterd-sm.c b/xlators/mgmt/glusterd/src/glusterd-sm.c
index ec8d50d6062..926a4386bb5 100644
--- a/xlators/mgmt/glusterd/src/glusterd-sm.c
+++ b/xlators/mgmt/glusterd/src/glusterd-sm.c
@@ -35,6 +35,7 @@
 #include "glusterd-op-sm.h"
 #include "glusterd-utils.h"
 #include "glusterd-store.h"
+#include "glusterd-svc-helper.h"
 #include "glusterd-snapshot-utils.h"
 #include "glusterd-server-quorum.h"
 
@@ -600,17 +601,29 @@ out:
 /* Clean up stale volumes on the peer being detached. The volumes which have
  * bricks on other peers are stale with respect to the detached peer.
  */
-static int
+static void
 glusterd_peer_detach_cleanup (glusterd_conf_t *priv)
 {
-        int                     ret = -1;
-        glusterd_volinfo_t      *volinfo = NULL;
+        int                     ret          = -1;
+        glusterd_volinfo_t      *volinfo     = NULL;
         glusterd_volinfo_t      *tmp_volinfo = NULL;
+        glusterd_svc_t          *svc         = NULL;
 
         GF_ASSERT (priv);
 
         cds_list_for_each_entry_safe (volinfo, tmp_volinfo, &priv->volumes,
                                       vol_list) {
+                /* Stop snapd daemon service if snapd daemon is running*/
+                if (!volinfo->is_snap_volume) {
+                        svc = &(volinfo->snapd.svc);
+                        ret = svc->stop (svc, SIGTERM);
+                        if (ret) {
+                                gf_msg (THIS->name, GF_LOG_ERROR, 0,
+                                        GD_MSG_SVC_STOP_FAIL, "Failed to "
+                                        "stop snapd daemon service.");
+                        }
+                }
+
                 /* The peer detach checks make sure that, at this point in the
                  * detach process, there are only volumes contained completely
                  * within or completely outside the detached peer.
@@ -627,14 +640,17 @@ glusterd_peer_detach_cleanup (glusterd_conf_t *priv)
                                 gf_msg (THIS->name, GF_LOG_ERROR, 0,
                                         GD_MSG_STALE_VOL_REMOVE_FAIL,
                                         "Error deleting stale volume");
-                                goto out;
                         }
                 }
         }
-        ret = 0;
-out:
-        gf_msg_debug (THIS->name, 0, "Returning %d", ret);
-        return ret;
+
+        /* Stop all daemon services of Detaching node once  peer detached */
+        ret = glusterd_svcs_stop ();
+        if (ret) {
+                gf_msg (THIS->name, GF_LOG_ERROR, 0,
+                        GD_MSG_SVC_STOP_FAIL,
+                        "Failed to stop all daemon services.");
+        }
 }
 
 static int
@@ -679,13 +695,7 @@ glusterd_ac_handle_friend_remove_req (glusterd_friend_sm_event_t *event,
         }
         rcu_read_unlock ();
 
-        ret = glusterd_peer_detach_cleanup (priv);
-        if (ret) {
-                gf_msg (THIS->name, GF_LOG_WARNING, 0,
-                        GD_MSG_PEER_DETACH_CLEANUP_FAIL,
-                        "Peer detach cleanup was not successful");
-                ret = 0;
-        }
+        glusterd_peer_detach_cleanup (priv);
 out:
         if (new_event)
                 GF_FREE (new_event->peername);