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    SNAPSHOT METADATA ARRANGEMENT FOR CLOUD INTEGRATION
    1.
    发明申请
    SNAPSHOT METADATA ARRANGEMENT FOR CLOUD INTEGRATION 审中-公开
    云集成的快照元数据安排

    公开(公告)号：WO2018081737A1

    公开(公告)日：2018-05-03

    申请号：PCT/US2017/059090

    申请日：2017-10-30

    Applicant: NETAPP, INC.

    Inventor： JAIN, Sharad ,  TAPASWI, Hrishikesh, Ashok ,  ZHENG, Ling ,  BHAT, Onkar ,  KAUSHIK, Akhil

    IPC: G06F11/14

    Abstract: A storage appliance arranges snapshot data and snapshot metadata into different structures, and arranges the snapshot metadata to facilitate efficient snapshot manipulation, which may be for snapshot management or snapshot restore. The storage appliance receives snapshots according to a forever incremental configuration and arranges snapshot metadata into different types of records. The storage appliance stores these records in key-value stores maintained for each defined data collection (e.g., volume). The storage appliance arranges the snapshot metadata into records for inode information, records for directory information, and records that map source descriptors of data blocks to snapshot file descriptors. The storage appliance uses a locally generated snapshot identifier as a key prefix for the records to conform to a sort constrain of the key-value store, which allows the efficiency of the key-value store to be leveraged. The snapshot metadata arrangement facilitates efficient snapshot restore, file restore, and snapshot reclamation.

    Abstract translation: 存储设备将快照数据和快照元数据安排到不同的结构中，并且排列快照元数据以促进高效的快照处理，这可以用于快照管理或快照恢复。 存储设备根据永久增量配置接收快照，并将快照元数据安排到不同类型的记录中。 存储设备将这些记录存储在为每个定义的数据收集（例如，卷）维护的键值存储中。 存储设备将快照元数据安排到inode信息的记录中，记录目录信息以及将数据块的源描述符映射到快照文件描述符的记录。 存储设备使用本地生成的快照标识符作为记录的键前缀，以符合键值存储的排序约束，从而可以利用键值存储的效率。 快照元数据安排有助于高效的快照恢复，文件恢复和快照回收。

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