Snapshot reconstruction from an existing snapshot and one or more modification logs
    41.
    发明授权
    Snapshot reconstruction from an existing snapshot and one or more modification logs 有权
    从现有快照和一个或多个修改日志快照重构

    公开(公告)号:US06981114B1

    公开(公告)日:2005-12-27

    申请号:US10271452

    申请日:2002-10-16

    IPC分类号: G06F12/16

    摘要: A deleted snapshot of a data volume may be reconstructed from an existing snapshot and one or more modification logs. For example, modifications to the data volume that occur subsequent to creation of a first snapshot may be logged in a modification log. If the first snapshot is deleted, the first snapshot may be reconstructed by modifying a second snapshot, created after the first snapshot, according to the modification log in order to undo any modifications made to the data volume prior to creation of the second snapshot and after creation of the first snapshot.

    摘要翻译: 可以从现有快照和一个或多个修改日志重构数据卷的已删除快照。 例如,在创建第一个快照后发生的数据卷的修改可能会记录在修改日志中。 如果第一个快照被删除,则可以通过根据修改日志修改在第一个快照之后创建的第二个快照来重构第一个快照,以便在创建第二个快照之前和之后撤销对数据卷的任何修改 创建第一个快照。