diff --git a/pitr/agent/internal/handler/diskspace.go b/pitr/agent/internal/handler/diskspace.go
index 401d523c..b9807f9a 100644
--- a/pitr/agent/internal/handler/diskspace.go
+++ b/pitr/agent/internal/handler/diskspace.go
@@ -40,6 +40,10 @@ func DiskSpace(ctx *fiber.Ctx) error {
 		return fmt.Errorf("invalid parameter, err wrap: %w", err)
 	}
 
+	if err := os.MkdirAll(in.DiskPath, 0755); err != nil {
+		return fmt.Errorf("mkdir [%s] failure, err wrap: %w", in.DiskPath, err)
+	}
+
 	// show disk space
 	cmd := fmt.Sprintf("df -h %s", in.DiskPath)
 	output, err := cmds.Exec(os.Getenv("SHELL"), cmd)
diff --git a/pitr/agent/pkg/cmds/cmd.go b/pitr/agent/pkg/cmds/cmd.go
index 77a98f53..e39a3475 100644
--- a/pitr/agent/pkg/cmds/cmd.go
+++ b/pitr/agent/pkg/cmds/cmd.go
@@ -142,7 +142,7 @@ func Exec(name string, args ...string) (string, error) {
 
 	if err = cmd.Wait(); err != nil {
 		if ee, ok := err.(*exec.ExitError); ok {
-			return "", fmt.Errorf("exec failure[ee=%s,stdout=%s], wrap:%w", ee, string(reader), cons.CmdOperateFailed)
+			return "", fmt.Errorf("exec failure[ee=%s,stdout=%s,stderr=%s], wrap:%w", ee, string(reader), string(ereader), cons.CmdOperateFailed)
 		}
 		return "", fmt.Errorf("%s err: %s", cmd.String(), string(ereader))
 	}