store: update log.

src/raftstore/store/peer_storage.rs

@@ -391,7 +391,10 @@ impl PeerStorage {
         ctx.apply_state.mut_truncated_state().set_index(last_index);
         ctx.apply_state.mut_truncated_state().set_term(snap.get_metadata().get_term());
 
-        info!("{} apply snapshot meta ok", self.tag);
+        info!("{} apply snapshot for region {:?} with state {:?} ok",
+              self.tag,
+              region,
+              ctx.apply_state);
 
         Ok(ApplySnapResult {
             prev_region: self.region.clone(),

src/raftstore/store/store.rs

@@ -1097,20 +1097,20 @@ impl<T: Transport, C: PdClient> Store<T, C> {
             let f = try!(self.snap_mgr.rl().get_snap_file(&key, is_sending));
             if is_sending {
                 if key.term < compacted_term || key.idx < compacted_idx {
-                    debug!("snap file {} has been compacted, delete.", key);
+                    info!("snap file {} has been compacted, delete.", key);
                     f.delete();
                 } else if let Ok(meta) = f.meta() {
                     let modified = box_try!(meta.modified());
                     if let Ok(elapsed) = modified.elapsed() {
                         if elapsed > Duration::from_secs(self.cfg.snap_gc_timeout) {
-                            debug!("snap file {} has been expired, delete.", key);
+                            info!("snap file {} has been expired, delete.", key);
                             f.delete();
                         }
                     }
                 }
             } else if key.term <= compacted_term &&
                (key.idx < compacted_idx || key.idx == compacted_idx && !is_applying_snap) {
-                debug!("snap file {} has been applied, delete.", key);
+                info!("snap file {} has been applied, delete.", key);
                 f.delete();
             }
         }