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FlexCache 是否自动执行回写

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ontap-9
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nas
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适用于

  • ONTAP 9.15.1 及更高版本
  • FlexCache
  • NFS

问题解答

  • 是的。
  • NFSv4.x(有状态协议):文件关闭时,缓存中大约有 40MB 的脏数据被刷新到原始存储。
  • NFSv3(无状态协议):在以下情况下,缓存中大约有 40MB 的脏数据被刷新到原始存储:
    • 另一个缓存请求对该文件的访问权限,或
    • 该文件已空闲超过 2 分钟(最多 5 分钟)。
  • 清理程序触发前端操作:
    • SETATTR(仅修改 mtime、atime 和/或 ctime 可以在缓存中处理)
    • 关闭
    • 在另一缓存中 OPEN
    • 在另一缓存中 READ
    • 在另一缓存中 READDIR
    • 在另一缓存中 READDIRPLUS
    • 在另一缓存中 WRITE
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