diff --git a/source/dnode/vnode/src/inc/tsdbReadImpl.h b/source/dnode/vnode/src/inc/tsdbReadImpl.h
index cd24358b27..d25ac1d194 100644
--- a/source/dnode/vnode/src/inc/tsdbReadImpl.h
+++ b/source/dnode/vnode/src/inc/tsdbReadImpl.h
@@ -64,18 +64,20 @@ typedef enum {
 #define SBlockVerLatest TSDB_SBLK_VER_0
 
 typedef struct {
+  uint8_t  blkVer : 4;
+  uint8_t  algorithm : 4;
   uint8_t  last : 1;
-  uint8_t  blkVer : 7;
-  uint8_t  numOfSubBlocks;
-  int16_t  numOfCols;    // not including timestamp column
-  uint32_t len;          // data block length
-  uint32_t keyLen : 24;  // key column length, keyOffset = offset+sizeof(SBlockData)+sizeof(SBlockCol)*numOfCols
-  uint32_t reserve : 8;
-  int32_t  algorithm : 8;
-  int32_t  numOfRows : 24;
+  uint8_t  numOfSubBlocks : 7;
+  col_id_t numOfCols;       // not including timestamp column
+  uint32_t len;             // data block length
+  uint64_t keyLen : 24;     // key column length, keyOffset = offset+sizeof(SBlockData)+sizeof(SBlockCol)*numOfCols
+  uint64_t colSpan : 8;     // columns split span(0~255. 0: no split; other: +1(e.g. 63->64, 127->128, 255->256))
+  uint64_t schemaVer : 16;  // 0~65535
+  uint64_t numOfRows : 16;  // 0~65535
   int64_t  offset;
   uint64_t aggrStat : 1;
   uint64_t aggrOffset : 63;
+  uint64_t reserve;  // TODO: use compact mode or reserve for future use?
   TSKEY    keyFirst;
   TSKEY    keyLast;
 } SBlockV0;
diff --git a/source/dnode/vnode/src/vnd/vnodeWrite.c b/source/dnode/vnode/src/vnd/vnodeWrite.c
index 02d4524bce..94cbe776bc 100644
--- a/source/dnode/vnode/src/vnd/vnodeWrite.c
+++ b/source/dnode/vnode/src/vnd/vnodeWrite.c
@@ -179,12 +179,16 @@ int vnodeApplyWMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
       }
     } break;
     case TDMT_VND_CREATE_SMA: {  // timeRangeSMA
-#if 0
+#if 1
+      
       SSmaCfg vCreateSmaReq = {0};
       if (tDeserializeSVCreateTSmaReq(POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead)), &vCreateSmaReq) == NULL) {
         terrno = TSDB_CODE_OUT_OF_MEMORY;
+        vWarn("vgId%d: TDMT_VND_CREATE_SMA received but deserialize failed since %s", pVnode->config.vgId, terrstr(terrno));
         return -1;
       }
+      vWarn("vgId%d: TDMT_VND_CREATE_SMA received for %s:%" PRIi64, pVnode->config.vgId, vCreateSmaReq.tSma.indexName,
+            vCreateSmaReq.tSma.indexUid);
 
       // record current timezone of server side
       tstrncpy(vCreateSmaReq.tSma.timezone, tsTimezoneStr, TD_TIMEZONE_LEN);