fix: more error log to debug vnode info file

source/dnode/vnode/src/vnd/vnodeCommit.c

@@ -95,16 +95,19 @@ int vnodeSaveInfo(const char *dir, const SVnodeInfo *pInfo) {
   // save info to a vnode_tmp.json
   pFile = taosOpenFile(fname, TD_FILE_CREATE | TD_FILE_WRITE | TD_FILE_TRUNC);
   if (pFile == NULL) {
+    vError("failed to open info file: %s for write: %s", fname, terrstr());
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
   }
 
   if (taosWriteFile(pFile, data, strlen(data)) < 0) {
+    vError("failed to write info file: %s data: %s", fname, terrstr());
     terrno = TAOS_SYSTEM_ERROR(errno);
     goto _err;
   }
 
   if (taosFsyncFile(pFile) < 0) {
+    vError("failed to fsync info file: %s error: %s", fname, terrstr());
     terrno = TAOS_SYSTEM_ERROR(errno);
     goto _err;
   }