diff --git a/src/database/engine/journalfile.c b/src/database/engine/journalfile.c
index 1e25ad5fd7790f..b8e3de3bbaed16 100644
--- a/src/database/engine/journalfile.c
+++ b/src/database/engine/journalfile.c
@@ -669,6 +669,7 @@ static void journalfile_restore_extent_metadata(struct rrdengine_instance *ctx,
     }
 
     time_t now_s = max_acceptable_collected_time();
+    time_t extent_first_time_s = journalfile->v2.first_time_s ? journalfile->v2.first_time_s : LONG_MAX;
     for (i = 0; i < count ; ++i) {
         uuid_t *temp_id;
         uint8_t page_type = jf_metric_data->descr[i].type;
@@ -728,8 +729,18 @@ static void journalfile_restore_extent_metadata(struct rrdengine_instance *ctx,
                 journalfile->datafile,
                 jf_metric_data->extent_offset, jf_metric_data->extent_size, jf_metric_data->descr[i].page_length);
 
+        extent_first_time_s = MIN(extent_first_time_s, vd.start_time_s);
+
         mrg_metric_release(main_mrg, metric);
     }
+
+    journalfile->v2.first_time_s = extent_first_time_s;
+
+    time_t old = __atomic_load_n(&ctx->atomic.first_time_s, __ATOMIC_RELAXED);;
+    do {
+        if(old <= extent_first_time_s)
+            break;
+    } while(!__atomic_compare_exchange_n(&ctx->atomic.first_time_s, &old, extent_first_time_s, false, __ATOMIC_RELAXED, __ATOMIC_RELAXED));
 }
 
 /*
diff --git a/src/database/engine/rrdengine.c b/src/database/engine/rrdengine.c
index 2d9c701053c4a3..4db364659cb47a 100644
--- a/src/database/engine/rrdengine.c
+++ b/src/database/engine/rrdengine.c
@@ -1411,8 +1411,11 @@ time_t get_datafile_end_time(struct rrdengine_instance *ctx)
     uv_rwlock_rdlock(&ctx->datafiles.rwlock);
     struct rrdengine_datafile *datafile = ctx->datafiles.first;
 
-    if (datafile)
+    if (datafile) {
         last_time_s = datafile->journalfile->v2.last_time_s;
+        if (!last_time_s)
+            last_time_s = datafile->journalfile->v2.first_time_s;
+    }
 
     uv_rwlock_rdunlock(&ctx->datafiles.rwlock);
     return last_time_s;
@@ -1814,6 +1817,9 @@ void dbengine_retention_statistics(void)
                                                     100 * retention / multidb_ctx[tier]->config.max_retention_s :
                                                     0;
 
+        if (retention_percentage > 100.0)
+            retention_percentage = 100.0;
+
         rrddim_set_by_pointer(stats[tier].st, stats[tier].rd_space, (collected_number) disk_percentage);
         rrddim_set_by_pointer(stats[tier].st, stats[tier].rd_time, (collected_number) retention_percentage);