1.预安装修改：

因为红旗系统的局限性，导致在第二次预安装的时候，执行输出环境变量的命令执行不了
所以在代码中加上source命令，可以直接执行命令

2.增加获取主dn的日志打印

3.switchover后升级失败：
switchover后，使用gs_om -t refreshconf生成动态文件，但是由于930的解码方式和
1230的解码方式存在差异，导致升级过程中，解读动态文件时错误

script/gspylib/common/DbClusterInfo.py

@@ -6231,15 +6231,25 @@ class dbClusterInfo():
                 logPathWithUser[0:(logPathWithUser.rfind(splitMark))]
             dynamicConfigFile = self.__getDynamicConfig(user)
             # read dynamic_config_file
+            dynamicConfigFilePath = os.path.split(dynamicConfigFile)[0]
+            versionFile = os.path.join(
+                dynamicConfigFilePath, "upgrade_version")
+            version, number, commitid = VersionInfo.get_version_info(
+                versionFile)
             fp = open(dynamicConfigFile, "rb")
-            info = fp.read(24)
-            (crc, lenth, version, currenttime, nodeNum) = \
-                struct.unpack("=IIIqi", info)
+            if float(number) <= 92.200:
+                info = fp.read(28)
+                (crc, lenth, version, currenttime, nodeNum) = \
+                    struct.unpack("=qIIqi", info)
+            else:
+                info = fp.read(24)
+                (crc, lenth, version, currenttime, nodeNum) = \
+                    struct.unpack("=IIIqi", info)
             totalMaterDnNum = 0
             for i in range(nodeNum):
                 offset = (fp.tell() // PAGE_SIZE + 1) * PAGE_SIZE
                 fp.seek(offset)
-                (dbNode, materDnNum) = self.__unpackDynamicNodeInfo(fp)
+                (dbNode, materDnNum) = self.__unpackDynamicNodeInfo(fp, number)
                 totalMaterDnNum += materDnNum
                 self.dbNodes.append(dbNode)
             if totalMaterDnNum != 1:
@@ -6252,9 +6262,13 @@ class dbClusterInfo():
             raise Exception(ErrorCode.GAUSS_502["GAUSS_50204"] %
                             dynamicConfigFile + " Error:\n" + str(e))
 
-    def __unpackDynamicNodeInfo(self, fp):
-        info = fp.read(72)
-        (crc, nodeId, nodeName) = struct.unpack("=II64s", info)
+    def __unpackDynamicNodeInfo(self, fp, number):
+        if float(number) <= 92.200:
+            info = fp.read(76)
+            (crc, nodeId, nodeName) = struct.unpack("=qI64s", info)
+        else:
+            info = fp.read(72)
+            (crc, nodeId, nodeName) = struct.unpack("=II64s", info)
         nodeName = nodeName.decode().strip('\x00')
         dbNode = dbNodeInfo(nodeId, nodeName)
         info = fp.read(4)