app_persistency: disable create flag on readonly persistency

When reading the persistency readonly, trying to open it with the create
flag results in an error. Removed create flag on readonly persistency

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bmcd"
-version = "2.3.3"
+version = "2.3.4"
 edition = "2021"
 license = "Apache-2.0"
 rust-version = "1.75.0"

src/persistency/app_persistency.rs

@@ -153,7 +153,7 @@ impl ApplicationPersistency {
         let serialized_file = OpenOptions::new()
             .read(true)
             .write(can_write)
-            .create(true)
+            .create(can_write)
             .truncate(false)
             .open(&path)
             .await;

src/serial_service/serial_handler.rs

@@ -28,7 +28,7 @@ use tokio_serial::{DataBits, Parity, SerialPortBuilderExt, StopBits};
 use tokio_stream::wrappers::BroadcastStream;
 use tokio_util::codec::{BytesCodec, Decoder};
 use tokio_util::sync::PollSender;
-use tracing::debug;
+use tracing::trace;
 
 use crate::utils::{string_from_utf16, string_from_utf32};
 
@@ -132,7 +132,7 @@ impl Handler {
         };
 
         let mut rb = self.ring_buffer.lock().await;
-        debug!("reading {} from node {}", rb.len(), self.node);
+        trace!("reading {} from node {}", rb.len(), self.node);
         Ok(Bytes::copy_from_slice(rb.make_contiguous()))
     }
 
@@ -205,7 +205,7 @@ impl Handler {
                             break;
                         };
 
-                        debug!("writing {} bytes node {}", bytes.len(), node);
+                        trace!("writing {} bytes node {}", bytes.len(), node);
                         // Implementation is actually infallible in the currently used v0.1.3
                         if buffer.lock().await.write(&bytes).is_err() {
                             tracing::error!("Failed to write to buffer of node {}", node);