chore: prompt and test case for log

source/util/src/tlog.c

@@ -402,7 +402,7 @@ static void taosKeepOldLog(char *oldName) {
     }
     if (code != 0 && tsLogEmbedded == 1) {  // print error messages only in embedded log mode
       // avoid using uWarn or uError, as they may open a new log file and potentially cause a deadlock.
-      fprintf(stderr, "failed at line %d to keep old log file:%s, reason:%s\n", lino, oldName, tstrerror(code));
+      fprintf(stderr, "WARN: failed at line %d to keep old log file:%s, reason:%s\n", lino, oldName, tstrerror(code));
     }
   }
 }

tests/system-test/0-others/taosdlog.py

@@ -118,6 +118,8 @@ class TDTestCase:
             tdLog.info(f"wait {i+1} second(s) for log compress")
             time.sleep(1)
         tdSql.checkEqual(True, logCompress)
+        tdSql.execute("alter all dnodes 'numOfLogLines 1000000'")
+        tdSql.execute("alter all dnodes 'debugFlag 131'")
 
     def prepareCfg(self, cfgPath, cfgDict):
         tdLog.info("make dir %s" % cfgPath)