公开(公告)号：US20140250081A1

公开(公告)日：2014-09-04

申请号：US14274614

申请日：2014-05-09

Applicant: Delphix Corp.

Inventor： Michael J. Stewart ,  Vinay H. Srihari ,  Subhadeep Sinha ,  Adam H. Leventhal ,  Matthew Allan Ahrens

IPC: G06F11/14

CPC classification number: G06F11/1458 ,  G06F11/1446 ,  G06F11/1469 ,  G06F11/1471 ,  G06F2201/80 ,  G06F2201/82 ,  G06F2201/84

Abstract: Virtual databases are provisioned using point-in-time copies of a source database. Transaction logs received from the source database are applied to a point-in-time copy of the source database to create recovery milestones comprising database blocks that can be used to provision virtual databases. The recovery milestones are created in advance of receiving a request to provision a virtual database. Each recovery milestone is validated to determine that a consistent database snapshot can be created using the recovery milestone. If a problem is identified that prevents creation of a consistent database snapshot, the problem is fixed before creating the next recovery milestone. In response to receiving a request to provision a virtual database corresponding to a point in time, a recovery milestone is identified and transaction logs applied to the recovery milestone to create a database snapshot corresponding to the requested point in time.

Abstract translation: 使用源数据库的时间点副本来提供虚拟数据库。 从源数据库接收的事务日志应用于源数据库的时间点副本，以创建包含可用于配置虚拟数据库的数据库块的恢复里程碑。 恢复里程碑是在接收到提供虚拟数据库的请求之前创建的。 验证每个恢复里程碑以确定可以使用恢复里程碑创建一致的数据库快照。 如果确定了阻止创建一致的数据库快照的问题，则在创建下一个恢复里程碑之前，问题已解决。 响应于接收到对与时间点相对应的虚拟数据库的请求，识别恢复里程碑，并将事务日志应用于恢复里程碑以创建与所请求的时间点对应的数据库快照。

公开(公告)号：US10346369B2

公开(公告)日：2019-07-09

申请号：US13799644

申请日：2013-03-13

Applicant: Delphix Corp.

Inventor： Matthew Allen Ahrens ,  Subhadeep Sinha ,  George Raymond Wilson ,  Jeffrey Karr Biseda

IPC: G06F16/21 ,  G06F16/178 ,  G06F16/27 ,  G06F3/06 ,  G06F11/14

Abstract: A storage system maintains copies of a source database to allow virtual databases to be provisioned. Transaction logs received from the source database are applied to database blocks stored in the storage system to update the database blocks. The storage system checks if there are defect in the transaction logs of the source database. If a defect in transaction logs is detected, the storage system obtains a latest copy of the source database. The storage system matches database blocks of the received copy with database blocks already available in the storage system to determine whether a corresponding database block is already available in the storage system. If a received database block is different from database blocks already available at the storage system, the received database block is stored in the storage system. The database blocks may be matched using a hash value of the database blocks.

公开(公告)号：US09639429B2

公开(公告)日：2017-05-02

申请号：US14274614

申请日：2014-05-09

Applicant: Delphix Corp.

Inventor： Michael J. Stewart ,  Vinay H. Srihari ,  Subhadeep Sinha ,  Adam H. Leventhal ,  Matthew Allan Ahrens

IPC: G06F17/30 ,  G06F11/14

CPC classification number: G06F11/1458 ,  G06F11/1446 ,  G06F11/1469 ,  G06F11/1471 ,  G06F2201/80 ,  G06F2201/82 ,  G06F2201/84

Abstract: Virtual databases are provisioned using point-in-time copies of a source database. Transaction logs received from the source database are applied to a point-in-time copy of the source database to create recovery milestones comprising database blocks that can be used to provision virtual databases. The recovery milestones are created in advance of receiving a request to provision a virtual database. Each recovery milestone is validated to determine that a consistent database snapshot can be created using the recovery milestone. If a problem is identified that prevents creation of a consistent database snapshot, the problem is fixed before creating the next recovery milestone. In response to receiving a request to provision a virtual database corresponding to a point in time, a recovery milestone is identified and transaction logs applied to the recovery milestone to create a database snapshot corresponding to the requested point in time.