diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c b/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
index 185aa071d717b3bbe0a7a047569a479041c668db..99977f29278f2dd1219ba9ae873264ae8bd0f388 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
@@ -107,7 +107,7 @@ static void vmGenerateVnodeCfg(SCreateVnodeReq *pCreate, SVnodeCfg *pCfg) {
 
   pCfg->vgId = pCreate->vgId;
   strcpy(pCfg->dbname, pCreate->db);
-  pCfg->szBuf = pCreate->cacheBlockSize * 1024 * 1024;
+  // pCfg->szBuf = pCreate->cacheBlockSize * 1024 * 1024;
   pCfg->streamMode = pCreate->streamMode;
   pCfg->isWeak = true;
   pCfg->tsdbCfg.days = 10;