[kvdb] update some log level.

Author: armink

src/fdb_kvdb.c

@@ -1071,12 +1071,12 @@ static uint32_t new_kv(fdb_kvdb_t db, kv_sec_info_t sector, size_t kv_size)
 
     if ((empty_kv = alloc_kv(db, sector, kv_size)) == FAILED_ADDR) {
         if (db->gc_request && !already_gc) {
-            FDB_DEBUG("Warning: Alloc an KV (size %" PRIu32 ") failed when new KV. Now will GC then retry.\n", (uint32_t)kv_size);
+            FDB_INFO("Warning: Alloc an KV (size %" PRIu32 ") failed when new KV. Now will GC then retry.\n", (uint32_t)kv_size);
             gc_collect_by_free_size(db, kv_size);
             already_gc = true;
             goto __retry;
         } else if (already_gc) {
-            FDB_DEBUG("Error: Alloc an KV (size %" PRIuLEAST16 ") failed after GC. KV full.\n", kv_size);
+            FDB_INFO("Error: Alloc an KV (size %" PRIuLEAST16 ") failed after GC. KV full.\n", kv_size);
             db->gc_request = false;
         }
     }
@@ -1120,7 +1120,7 @@ static bool do_gc(kv_sec_info_t sector, void *arg1, void *arg2)
             if (kv.crc_is_ok && (kv.status == FDB_KV_WRITE || kv.status == FDB_KV_PRE_DELETE)) {
                 /* move the KV to new space */
                 if (move_kv(db, &kv) != FDB_NO_ERR) {
-                    FDB_DEBUG("Error: Moved the KV (%.*s) for GC failed.\n", kv.name_len, kv.name);
+                    FDB_INFO("Error: Moved the KV (%.*s) for GC failed.\n", kv.name_len, kv.name);
                 }
             }
         } while ((kv.addr.start = get_next_kv_addr(db, sector, &kv)) != FAILED_ADDR);