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此 v4.2-sparsefile-ops 是否执行 ALLOCATE/DEALLOCATE？

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适用于

  • ONTAP
  • NFS

回答

  • 此功能是在 ONTAP 版本 9.12.1 中引入的

NFSv4.2 稀疏文件和空间保留支持

NFSv4.2 客户端能够为稀疏文件预留空间。也可以从文件中取消分配和取消预留空间。
  • 请注意：ONTAP 支持完整文件解除分配，而不是部分解除分配

  • 连续的 ONTAP 版本扩展了对 NFSv4.2 可选功能的支持。

    开头是…​ NFSv4.2 可选功能包括…​

    ONTAP 9.12.1

    • NFS 扩展属性

    • 稀疏文件

    • 空间预留
  • NFSv4.2 提供 ALLOCATE 操作，允许客户端为文件预分配磁盘空间，而无需实际向文件写入数据。
  • 这有助于减少碎片并确保空间可用性，从而实现对稀疏文件的高效管理

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