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ONTAP CIFS 客户端能否在 LIF 迁移后生存?

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适用场景

  • Data ONTAP 8
  • ONTAP 9
  • CIFS/SMB

问题解答

可以,在某些情况下,对于 SMB 2.0 及更高版本, LIF 迁移不会造成中断。 

  • SMB 1、客户端会话在网络中断期间断开连接。
  • SMB 2.0和2.1、使用持久性文件句柄可以重新连接会话、而不会对应用程序产生任何影响:
    • 持久性句柄(默认情况下为SMB2.x启用)
  • SMB 1无法防止锁定状态在网络中断期间丢失。SMB 2可通过持久性句柄满足此需求:客户端保留的文件句柄、可用于重新建立已断开连接的会话。
  • 注意: 尽管持久性句柄在卷移动和LIF迁移中不会造成中断、但它们不会在节点之间进行镜像、并且节点的故障转移(或升级)会导致锁定状态丢失。SMB 3的永久性句柄通过在集群中的节点之间镜像锁定状态、改进了SMB 2持久性句柄。
  • 有关详细信息、请阅读 TR-4543 、第6页开始

警告

  • 持久性/持久性文件句柄专用于打开的单个文件。
  • 当多个用户访问同一文件时、无中断行为可能会受到影响。 

追加信息

 

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