diff --git a/src/common/channel.cpp b/src/common/channel.cpp
index e62478e8106fb8a73f6ac9ffec654074b1a19b9f..c20f6fb6a49dacebd97beb66eae6965cc65450cb 100644
--- a/src/common/channel.cpp
+++ b/src/common/channel.cpp
@@ -180,6 +180,7 @@ void HdcChannelBase::WriteCallback(uv_write_t *req, int status)
     --hChannel->ref;
     HdcChannelBase *thisClass = (HdcChannelBase *)hChannel->clsChannel;
     if (status < 0) {
+        WRITE_LOG(LOG_WARN, "WriteCallback status:%d", status);
         hChannel->writeFailedTimes++;
         Base::TryCloseHandle((uv_handle_t *)req->handle);
         if (!hChannel->isDead && !hChannel->ref) {
diff --git a/src/common/file.cpp b/src/common/file.cpp
index fdb6271b5f565b10a02c37f5d004110449acf37a..226c38b2484522009d779602a99f516bbe6fbc75 100644
--- a/src/common/file.cpp
+++ b/src/common/file.cpp
@@ -269,11 +269,13 @@ bool HdcFile::SlaveCheck(uint8_t *payload, const int payloadSize)
 
     if (!CheckLocalPath(ctxNow.localPath, stat.optionalName, errStr)) {
         LogMsg(MSG_FAIL, "%s", errStr.c_str());
+        WRITE_LOG(LOG_WARN, "SlaveCheck CheckLocalPath error:%s", errStr.c_str());
         return false;
     }
 
     if (!CheckFilename(ctxNow.localPath, stat.optionalName, errStr)) {
         LogMsg(MSG_FAIL, "%s", errStr.c_str());
+        WRITE_LOG(LOG_WARN, "SlaveCheck CheckFilename error:%s", errStr.c_str());
         return false;
     }
     // check path
diff --git a/src/common/transfer.cpp b/src/common/transfer.cpp
index a7a6d9e573f91473c602da42286522be8cedd7f2..07521c27aa77128a2339763a8515a64248268fd5 100644
--- a/src/common/transfer.cpp
+++ b/src/common/transfer.cpp
@@ -136,6 +136,7 @@ int HdcTransferBase::SimpleFileIO(CtxFile *context, uint64_t index, uint8_t *sen
         if (ioContext != nullptr) {
             delete ioContext;
             ioContext = nullptr;
+            WRITE_LOG(LOG_WARN, "SimpleFileIO ret=false, delete context.");
         }
 #ifndef CONFIG_USE_JEMALLOC_DFX_INIF
         cirbuf.Free(buf);
@@ -212,9 +213,13 @@ bool HdcTransferBase::SendIOPayload(CtxFile *context, uint64_t index, uint8_t *d
     payloadHead.compressSize = compressSize;
     head = SerialStruct::SerializeToString(payloadHead);
     if (head.size() + 1 > payloadPrefixReserve) {
+        WRITE_LOG(LOG_WARN, "SendIOPayload head size:%d, payloadprefix:%d.",
+            head.size(), payloadPrefixReserve);
         goto out;
     }
     if (EOK != memcpy_s(sendBuf, sendBufSize, head.c_str(), head.size() + 1)) {
+        WRITE_LOG(LOG_WARN, "SendIOPayload memcpy_s fail, sendBufSize:%d, head size:%d.",
+            sendBufSize, head.size());
         goto out;
     }
     ret = SendToAnother(commandData, sendBuf, payloadPrefixReserve + compressSize) > 0;
@@ -256,6 +261,7 @@ void HdcTransferBase::OnFileIO(uv_fs_t *req)
                       context->fileSize);
 #endif // HDC_DEBUG
             if (!thisClass->SendIOPayload(context, context->indexIO - req->result, bufIO, req->result)) {
+                WRITE_LOG(LOG_WARN, "OnFileIO SendIOPayload fail.");
                 context->ioFinish = true;
                 break;
             }
@@ -352,7 +358,8 @@ void HdcTransferBase::OnFileOpen(uv_fs_t *req)
         uv_strerror_r((int)req->result, buf, bufSize);
         thisClass->LogMsg(MSG_FAIL, "Error opening file: %s, path:%s", buf,
                           context->localPath.c_str());
-        WRITE_LOG(LOG_FATAL, "open path:%s error:%s", context->localPath.c_str(), buf);
+        WRITE_LOG(LOG_FATAL, "open path:%s error:%s, dir:%d, master:%d",
+            context->localPath.c_str(), buf, context->isDir, context->master);
         OnFileOpenFailed(context);
         return;
     }
@@ -716,6 +723,7 @@ bool HdcTransferBase::RecvIOPayload(CtxFile *context, uint8_t *data, int dataSiz
             break;
         }
         if (SimpleFileIO(context, pld.index, clearBuf, clearSize) < 0) {
+            WRITE_LOG(LOG_WARN, "RecvIOPayload SimpleFileIO fail.");
             break;
         }
         ret = true;