diff --git a/vmBackUp.sh b/vmBackUp.sh
index cd2ac6b..20fbbac 100755
--- a/vmBackUp.sh
+++ b/vmBackUp.sh
@@ -19,82 +19,109 @@ if [ ! -d "$BACKUP_DIR" ]; then
   mkdir -p "$BACKUP_DIR"
 fi
 
-# 步骤1: 禁用ES集群分片分配
-echo "禁用ES集群分片分配..."
-curl -u elastic:your_secure_password -X PUT "http://${ES_HOST}/_cluster/settings" -H 'Content-Type: application/json' -d'{
-    "persistent": {
-        "cluster.routing.allocation.enable": "none"
-    }
-}'
-if [ $? -ne 0 ]; then
-  echo "错误: 禁用ES集群分片分配失败"
-  exit 1
-fi
-echo ""
-
-# 步骤2: 停止虚机
-echo "停止虚机: $VM_NAME..."
-lxc stop "$VM_NAME"
-if [ $? -ne 0 ]; then
-  echo "错误: 无法停止虚机 $VM_NAME"
-  exit 1
-fi
-
-# 步骤3: 管理备份文件（保留最近3份）
-echo "管理备份文件..."
-if [ -f "${BACKUP_FILE}_bak1" ]; then
-  mv "${BACKUP_FILE}_bak1" "${BACKUP_FILE}_bak2"
-fi
-if [ -f "$BACKUP_FILE" ]; then
-  mv "$BACKUP_FILE" "${BACKUP_FILE}_bak1"
-fi
-
-# 步骤4: 执行备份
-echo "开始备份虚机 $VM_NAME 到 $BACKUP_FILE..."
-lxc export "$VM_NAME" "$BACKUP_FILE"
-if [ $? -ne 0 ]; then
-  echo "错误: 备份失败"
-  lxc start "$VM_NAME" # 备份失败时尝试重启虚机
-  exit 1
-fi
-
-# 步骤5: 重启虚机
-echo "重启虚机: $VM_NAME..."
-lxc start "$VM_NAME"
-if [ $? -ne 0 ]; then
-  echo "错误: 无法启动虚机 $VM_NAME"
-  exit 1
-fi
-
-# 步骤6: 等待节点加入ES集群
-echo "等待节点 $NODE_NAME 加入ES集群..."
-MAX_WAIT=60     # 最大等待时间（秒）
-WAIT_INTERVAL=5 # 检查间隔（秒）
-ELAPSED=0
-while [ $ELAPSED -lt $MAX_WAIT ]; do
-  NODE_COUNT=$(curl -s "http://${ES_HOST}/_cat/nodes" | grep -c "$NODE_NAME")
-  if [ "$NODE_COUNT" -ge 1 ]; then
-    echo "节点 $NODE_NAME 已加入集群"
-    break
+# 定义函数：重新启用ES集群分片分配
+enable_shard_allocation() {
+  echo "重新启用ES集群分片分配..."
+  curl -X PUT "http://${ES_HOST}/_cluster/settings" -H 'Content-Type: application/json' -d'{
+      "persistent": {
+          "cluster.routing.allocation.enable": "all"
+      }
+  }'
+  if [ $? -ne 0 ]; then
+    echo "警告: 重新启用ES集群分片分配失败"
+  else
+    echo "ES集群分片分配已成功重新启用"
   fi
-  sleep $WAIT_INTERVAL
-  ELAPSED=$((ELAPSED + WAIT_INTERVAL))
-done
-if [ $ELAPSED -ge $MAX_WAIT ]; then
-  echo "警告: 等待超时，节点 $NODE_NAME 未及时加入集群"
-fi
+}
 
-# 步骤7: 重新启用ES集群分片分配
-echo "重新启用ES集群分片分配..."
-curl -X PUT "http://${ES_HOST}/_cluster/settings" -H 'Content-Type: application/json' -d'{
-    "persistent": {
-        "cluster.routing.allocation.enable": "all"
-    }
-}'
-if [ $? -ne 0 ]; then
-  echo "错误: 重新启用ES集群分片分配失败"
+# 定义函数：禁用ES集群分片分配
+disable_shard_allocation() {
+  echo "禁用ES集群分片分配..."
+  curl -u elastic:your_secure_password -X PUT "http://${ES_HOST}/_cluster/settings" -H 'Content-Type: application/json' -d'{
+      "persistent": {
+          "cluster.routing.allocation.enable": "none"
+      }
+  }'
+  if [ $? -ne 0 ]; then
+    echo "错误: 禁用ES集群分片分配失败"
+    enable_shard_allocation
+    exit 1
+  fi
+  echo ""
+}
+
+# 定义函数：停止虚机
+stop_vm() {
+  echo "停止虚机: $VM_NAME..."
+  lxc stop "$VM_NAME"
+  if [ $? -ne 0 ]; then
+    echo "错误: 无法停止虚机 $VM_NAME"
+    enable_shard_allocation
+    exit 1
+  fi
+}
+
+# 定义函数：管理备份文件
+manage_backup_files() {
+  echo "管理备份文件..."
+  if [ -f "${BACKUP_FILE}_bak1" ]; then
+    mv "${BACKUP_FILE}_bak1" "${BACKUP_FILE}_bak2"
+  fi
+  if [ -f "$BACKUP_FILE" ]; then
+    mv "$BACKUP_FILE" "${BACKUP_FILE}_bak1"
+  fi
+}
+
+# 定义函数：执行备份
+perform_backup() {
+  echo "开始备份虚机 $VM_NAME 到 $BACKUP_FILE..."
+  lxc export "$VM_NAME" "$BACKUP_FILE"
+  if [ $? -ne 0 ]; then
+    echo "错误: 备份失败"
+    lxc start "$VM_NAME" # 备份失败时尝试重启虚机
+    enable_shard_allocation
+    exit 1
+  fi
+}
+
+# 定义函数：重启虚机
+start_vm() {
+  echo "重启虚机: $VM_NAME..."
+  lxc start "$VM_NAME"
+  if [ $? -ne 0 ]; then
+    echo "错误: 无法启动虚机 $VM_NAME"
+    enable_shard_allocation
+    exit 1
+  fi
+}
+
+# 定义函数：等待节点加入ES集群
+wait_for_node_join() {
+  echo "等待节点 $NODE_NAME 加入ES集群..."
+  MAX_WAIT=60     # 最大等待时间（秒）
+  WAIT_INTERVAL=5 # 检查间隔（秒）
+  ELAPSED=0
+  while [ $ELAPSED -lt $MAX_WAIT ]; do
+    NODE_COUNT=$(curl -s "http://${ES_HOST}/_cat/nodes" | grep -c "$NODE_NAME")
+    if [ "$NODE_COUNT" -ge 1 ]; then
+      echo "节点 $NODE_NAME 已加入集群"
+      return 0
+    fi
+    sleep $WAIT_INTERVAL
+    ELAPSED=$((ELAPSED + WAIT_INTERVAL))
+  done
+  echo "警告: 等待超时，节点 $NODE_NAME 未及时加入集群"
+  enable_shard_allocation
   exit 1
-fi
-echo ""
+}
+
+# 主流程
+disable_shard_allocation
+stop_vm
+manage_backup_files
+perform_backup
+start_vm
+wait_for_node_join
+enable_shard_allocation
 
 echo "备份完成！最新备份文件: $BACKUP_FILE"