clusterer: Add/Improve some important logs during startup sync

(cherry picked from commit 2bf1bdc)

modules/clusterer/clusterer.c

@@ -101,8 +101,10 @@ void sync_check_timer(utime_t ticks, void *param)
 						sr_set_status(cl_srg, STR2CI(cap->reg.sr_id), CAP_SR_SYNCED,
 							STR2CI(CAP_SR_STATUS_STR(CAP_SR_SYNCED)), 0);
 						sr_add_report_fmt(cl_srg, STR2CI(cap->reg.sr_id), 0,
-							"Donor node not found, fallback to synced state");
-						LM_INFO("No donor found, falling back to synced state\n");
+							"ERROR: Sync request aborted! (no donor found in due time)"
+							" => fallback to synced state");
+						LM_ERR("Sync request aborted! (no donor found in due time)"
+						    ", falling back to synced state\n");
 						/* send update about the state of this capability */
 						send_single_cap_update(cl, cap, 1);
 

modules/clusterer/sync.c

@@ -101,9 +101,14 @@ int queue_sync_request(cluster_info_t *cluster, struct local_cap *lcap)
 
 	lock_release(cluster->lock);
 
+	LM_INFO("Queue'ing sync request for capability '%.*s' in cluster %d "
+	    "(no donor available)\n", lcap->reg.name.len, lcap->reg.name.s,
+	    cluster->cluster_id);
+
 	sr_set_status(cl_srg, STR2CI(lcap->reg.sr_id), CAP_SR_SYNC_PENDING,
 		STR2CI(CAP_SR_STATUS_STR(CAP_SR_SYNC_PENDING)), 0);
-	if (sr_add_report_fmt(cl_srg, STR2CI(lcap->reg.sr_id), 0, "Sync requested"))
+	if (sr_add_report_fmt(cl_srg, STR2CI(lcap->reg.sr_id), 0,
+	        "Sync request postponed! (no donor available)"))
 		return -1;
 
 	return 0;
@@ -326,7 +331,7 @@ void send_sync_repl(int sender, void *param)
 	bin_packet_t sync_end_pkt, *pkt, *next_pkt;
 	str bin_buffer;
 	struct local_cap *cap;
-	int rc, cluster_id, pkt_no;
+	int rc, cluster_id, pkt_no = 0;
 	struct reply_rpc_params *p = (struct reply_rpc_params *)param;
 
 	for (cap = p->cluster->capabilities; cap; cap = cap->next)