add err log

pkg/app/raspberryChan.go

@@ -11,6 +11,9 @@ import (
 	"os"
 )
 
+var (
+	path string
+)
 
 func RaspberryChan() {
 	for {
@@ -19,6 +22,7 @@ func RaspberryChan() {
 			if value.Name == "" {
 				continue
 			}
+			path = GetAbsPath(setting.BityuanSetting.Name)
 			switch value.Name {
 			case "ROLLBACK":
 				err := rollback()
@@ -84,7 +88,6 @@ func rollback() error {
 	time.Sleep(time.Second * 2)
 	tlog.Info("rollback start","height",pai.LocalLastHeight,"rollbackheight",rollheight)
 	var buf bytes.Buffer
-	path := GetAbsPath(setting.BityuanSetting.Name)
 	if path == "" {
 		tlog.Error("GetAbsPath","err","path not exists")
 		BityuanFlag.Flag  = false
@@ -112,6 +115,7 @@ func backup() error {
 	ok,err := SafeCloseNode()
 	if err != nil  {
 		BityuanFlag.Flag = false
+		tlog.Error("SafeCloseNode","err",err)
 		return err
 	}
 	if !ok {
@@ -123,20 +127,19 @@ func backup() error {
 }
 
 func SafeBackup() error {
-	backup := exec.Command("cp","-r","datadir","datadir_backup")
-	return backup.Run()
+	var buf bytes.Buffer
+	backup := exec.Command("cp","-r",path+"/datadir",path+"/datadir_backup")
+	backup.Stderr = &buf
+	if err := backup.Run();err != nil {
+		tlog.Error("SafeBackup","err",buf.String())
+		return err
+	}
+	return nil
 }
 
 func recoverNode() error {
 	BityuanFlag.Lock.Lock()
 	defer BityuanFlag.Lock.Unlock()
-	remove := exec.Command("rm","-rf","datadir")
-	err := remove.Run()
-	if err != nil {
-		tlog.Error("rm -rf datadir","err",err)
-		return err
-	}
-	path := GetAbsPath(setting.BityuanSetting.Name)
 	if path == "" {
 		tlog.Error("path empty","err","node not exists")
 		return errors.New("node not exists")
@@ -148,7 +151,14 @@ func recoverNode() error {
 			return errors.New("backup file not exists")
 		}
 	}
-	recover := exec.Command("cp","-r","datadir_backup","datadir")
+	remove := exec.Command("rm","-rf",path+"/datadir")
+	err := remove.Run()
+	if err != nil {
+		tlog.Error("rm -rf datadir","err",err)
+		return err
+	}
+
+	recover := exec.Command("cp","-r",backupPath,path+"/datadir")
 	err = recover.Run()
 	if err != nil {
 		tlog.Error("cp -r datadir_backup datadir","err",err)