diff --git a/kernel/filesys/tree.go b/kernel/filesys/tree.go
index 64f453250..2b1178b65 100644
--- a/kernel/filesys/tree.go
+++ b/kernel/filesys/tree.go
@@ -41,6 +41,10 @@ func LoadTree(boxID, p string, luteEngine *lute.Lute) (ret *parse.Tree, err erro
 	data, err := filelock.ReadFile(filePath)
 	if nil != err {
 		logging.LogErrorf("load tree [%s] failed: %s", p, err)
+		if errors.Is(err, filelock.ErrUnableAccessFile) {
+			os.Exit(util.ExitCodeFileSysInconsistent)
+			return
+		}
 		return
 	}
 
@@ -92,6 +96,10 @@ func LoadTreeByData(data []byte, boxID, p string, luteEngine *lute.Lute) (ret *p
 				}
 			} else {
 				logging.LogWarnf("read parent tree data [%s] failed: %s", parentAbsPath, readErr)
+				if errors.Is(readErr, filelock.ErrUnableAccessFile) {
+					os.Exit(util.ExitCodeFileSysInconsistent)
+					return
+				}
 			}
 			hPathBuilder.WriteString("Untitled/")
 			continue
diff --git a/kernel/sql/queue.go b/kernel/sql/queue.go
index 2c9d04f78..d4b289746 100644
--- a/kernel/sql/queue.go
+++ b/kernel/sql/queue.go
@@ -130,7 +130,7 @@ func FlushQueue() {
 		context["total"] = groupOpsTotal[op.action]
 		if err = execOp(op, tx, context); nil != err {
 			tx.Rollback()
-			logging.LogErrorf("queue operation failed: %s", err)
+			logging.LogErrorf("queue operation [%s] failed: %s", op.action, err)
 			continue
 		}
 
diff --git a/kernel/util/runtime.go b/kernel/util/runtime.go
index 6ee85eb04..140c007b6 100644
--- a/kernel/util/runtime.go
+++ b/kernel/util/runtime.go
@@ -17,6 +17,7 @@
 package util
 
 import (
+	"bytes"
 	"fmt"
 	"math/rand"
 	"os"
@@ -137,7 +138,12 @@ func CheckFileSysStatus() {
 
 	reportFileSysFatalError := func(err error) {
 		stack := debug.Stack()
-		logging.LogErrorf("check file system status failed: %s, %s", err, stack)
+		output := string(stack)
+		if 5 < strings.Count(output, "\n") {
+			lines := strings.Split(output, "\n")
+			output = strings.Join(lines[5:], "\n")
+		}
+		logging.LogErrorf("check file system status failed: %s, %s", err, output)
 		os.Exit(ExitCodeFileSysInconsistent)
 	}
 
@@ -179,7 +185,15 @@ func CheckFileSysStatus() {
 			time.Sleep(time.Second)
 
 			for j := 0; j < 32; j++ {
-				f, err := os.Open(tmp)
+				renamed := tmp + "_renamed"
+				if err = os.Rename(tmp, renamed); nil != err {
+					reportFileSysFatalError(err)
+					break
+				}
+
+				time.Sleep(100 * time.Millisecond)
+
+				f, err := os.Open(renamed)
 				if nil != err {
 					reportFileSysFatalError(err)
 					break
@@ -190,15 +204,7 @@ func CheckFileSysStatus() {
 					break
 				}
 
-				time.Sleep(200 * time.Millisecond)
-
-				if err = os.Rename(tmp, tmp+"_renamed"); nil != err {
-					reportFileSysFatalError(err)
-					break
-				}
-
-				time.Sleep(200 * time.Millisecond)
-				if err = os.Rename(tmp+"_renamed", tmp); nil != err {
+				if err = os.Rename(renamed, tmp); nil != err {
 					reportFileSysFatalError(err)
 					break
 				}
@@ -209,14 +215,23 @@ func CheckFileSysStatus() {
 					break
 				}
 
-				count := 0
+				checkFilenames := bytes.Buffer{}
 				for _, entry := range entries {
 					if !entry.IsDir() && strings.Contains(entry.Name(), "check_") {
-						count++
+						checkFilenames.WriteString(entry.Name())
+						checkFilenames.WriteString("\n")
 					}
 				}
-				if 1 < count {
-					reportFileSysFatalError(fmt.Errorf("dir [%s] has more than 1 file", dir))
+				lines := strings.Split(strings.TrimSpace(checkFilenames.String()), "\n")
+				if 1 < len(lines) {
+					buf := bytes.Buffer{}
+					for _, line := range lines {
+						buf.WriteString("  ")
+						buf.WriteString(line)
+						buf.WriteString("\n")
+					}
+					output := buf.String()
+					reportFileSysFatalError(fmt.Errorf("dir [%s] has more than 1 file:\n%s", dir, output))
 					break
 				}
 			}