fix: add some logs to detect vnodes.json emptyed

source/dnode/mgmt/mgmt_vnode/src/vmFile.c

@@ -16,7 +16,7 @@
 #define _DEFAULT_SOURCE
 #include "vmInt.h"
 
-#define MAX_CONTENT_LEN 1024 * 1024
+#define MAX_CONTENT_LEN 2 * 1024 * 1024
 
 SVnodeObj **vmGetVnodeListFromHash(SVnodeMgmt *pMgmt, int32_t *numOfVnodes) {
   taosThreadRwlockRdlock(&pMgmt->lock);
@@ -60,7 +60,7 @@ int32_t vmGetVnodeListFromFile(SVnodeMgmt *pMgmt, SWrapperCfg **ppCfgs, int32_t
 
   pFile = taosOpenFile(file, TD_FILE_READ);
   if (pFile == NULL) {
-    dDebug("file %s not exist", file);
+    dInfo("file %s not exist", file);
     code = 0;
     goto _OVER;
   }
@@ -133,7 +133,7 @@ int32_t vmGetVnodeListFromFile(SVnodeMgmt *pMgmt, SWrapperCfg **ppCfgs, int32_t
 
   *numOfVnodes = vnodesNum;
   code = 0;
-  dDebug("succcessed to read file %s, numOfVnodes:%d", file, vnodesNum);
+  dInfo("succcessed to read file %s, numOfVnodes:%d", file, vnodesNum);
 
 _OVER:
   if (content != NULL) taosMemoryFree(content);
@@ -163,6 +163,7 @@ int32_t vmWriteVnodeListToFile(SVnodeMgmt *pMgmt) {
   if (ppVnodes == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     code = -1;
+    dError("failed to write %s while get vnodelist", file);
     goto _OVER;
   }
 
@@ -172,6 +173,7 @@ int32_t vmWriteVnodeListToFile(SVnodeMgmt *pMgmt) {
   if (content == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     code = -1;
+    dError("failed to write %s while malloc content", file);
     goto _OVER;
   }
 
@@ -213,6 +215,12 @@ _OVER:
 
   if (code != 0) return -1;
 
-  dDebug("successed to write %s, numOfVnodes:%d", realfile, numOfVnodes);
-  return taosRenameFile(file, realfile);
+  dInfo("successed to write %s, numOfVnodes:%d", realfile, numOfVnodes);
+  code = taosRenameFile(file, realfile);
+  
+  if (code != 0) {
+    dError("failed to rename %s to %s", file, realfile);
+  }
+
+  return code;
 }
\ No newline at end of file

source/dnode/mgmt/mgmt_vnode/src/vmHandle.c

@@ -213,7 +213,7 @@ int32_t vmProcessCreateVnodeReq(SVnodeMgmt *pMgmt, SRpcMsg *pMsg) {
 
   SVnodeObj *pVnode = vmAcquireVnode(pMgmt, req.vgId);
   if (pVnode != NULL) {
-    dDebug("vgId:%d, already exist", req.vgId);
+    dInfo("vgId:%d, already exist", req.vgId);
     tFreeSCreateVnodeReq(&req);
     vmReleaseVnode(pMgmt, pVnode);
     terrno = TSDB_CODE_VND_ALREADY_EXIST;
@@ -358,7 +358,7 @@ int32_t vmProcessDropVnodeReq(SVnodeMgmt *pMgmt, SRpcMsg *pMsg) {
   }
 
   int32_t vgId = dropReq.vgId;
-  dDebug("vgId:%d, start to drop vnode", vgId);
+  dInfo("vgId:%d, start to drop vnode", vgId);
 
   if (dropReq.dnodeId != pMgmt->pData->dnodeId) {
     terrno = TSDB_CODE_INVALID_MSG;
@@ -368,7 +368,7 @@ int32_t vmProcessDropVnodeReq(SVnodeMgmt *pMgmt, SRpcMsg *pMsg) {
 
   SVnodeObj *pVnode = vmAcquireVnode(pMgmt, vgId);
   if (pVnode == NULL) {
-    dDebug("vgId:%d, failed to drop since %s", vgId, terrstr());
+    dInfo("vgId:%d, failed to drop since %s", vgId, terrstr());
     terrno = TSDB_CODE_VND_NOT_EXIST;
     return -1;
   }
@@ -383,6 +383,7 @@ int32_t vmProcessDropVnodeReq(SVnodeMgmt *pMgmt, SRpcMsg *pMsg) {
   vmCloseVnode(pMgmt, pVnode);
   vmWriteVnodeListToFile(pMgmt);
 
+  dInfo("vgId:%d, is dropped", vgId);
   return 0;
 }
 

source/dnode/mgmt/mgmt_vnode/src/vmInt.c

@@ -138,7 +138,7 @@ static void *vmOpenVnodeInThread(void *param) {
   SVnodeMgmt   *pMgmt = pThread->pMgmt;
   char          path[TSDB_FILENAME_LEN];
 
-  dDebug("thread:%d, start to open %d vnodes", pThread->threadIndex, pThread->vnodeNum);
+  dInfo("thread:%d, start to open %d vnodes", pThread->threadIndex, pThread->vnodeNum);
   setThreadName("open-vnodes");
 
   for (int32_t v = 0; v < pThread->vnodeNum; ++v) {
@@ -156,14 +156,14 @@ static void *vmOpenVnodeInThread(void *param) {
       pThread->failed++;
     } else {
       vmOpenVnode(pMgmt, pCfg, pImpl);
-      dDebug("vgId:%d, is opened by thread:%d", pCfg->vgId, pThread->threadIndex);
+      dInfo("vgId:%d, is opened by thread:%d", pCfg->vgId, pThread->threadIndex);
       pThread->opened++;
       atomic_add_fetch_32(&pMgmt->state.openVnodes, 1);
     }
   }
 
-  dDebug("thread:%d, numOfVnodes:%d, opened:%d failed:%d", pThread->threadIndex, pThread->vnodeNum, pThread->opened,
-         pThread->failed);
+  dInfo("thread:%d, numOfVnodes:%d, opened:%d failed:%d", pThread->threadIndex, pThread->vnodeNum, pThread->opened,
+        pThread->failed);
   return NULL;
 }
 
@@ -496,7 +496,7 @@ static void *vmRestoreVnodeInThread(void *param) {
       dError("vgId:%d, failed to restore vnode by thread:%d", pVnode->vgId, pThread->threadIndex);
       pThread->failed++;
     } else {
-      dDebug("vgId:%d, is restored by thread:%d", pVnode->vgId, pThread->threadIndex);
+      dInfo("vgId:%d, is restored by thread:%d", pVnode->vgId, pThread->threadIndex);
       pThread->opened++;
       atomic_add_fetch_32(&pMgmt->state.openVnodes, 1);
     }