公开(公告)号：US20060106873A1

公开(公告)日：2006-05-18

申请号：US10993092

申请日：2004-11-18

申请人： James Springer ,  Yu-Cheng Hsu ,  Lloyd Wiebe ,  Kurt Lovrien ,  David Mannenbach ,  Angelique Budaya

发明人： James Springer ,  Yu-Cheng Hsu ,  Lloyd Wiebe ,  Kurt Lovrien ,  David Mannenbach ,  Angelique Budaya

IPC分类号： G06F17/00

CPC分类号： G06F3/0652 ,  G06F3/0605 ,  G06F3/0614 ,  G06F3/0683 ,  G06F11/1435

摘要： Method for selectively clearing persistent data such as metadata in a storage subsystem. The method includes identifying one or more metadata tracks to clear, receiving a request from a client to clear the identified metadata tracks, passing the request to a storage device driver, and clearing the identified metadata tracks. The metadata tracks to be cleared may be identified by a specific storage function associated with the metadata to be cleared or by a specific storage target associated with metadata. Alternatively, both a storage function and a storage target may be specified. Preferably, the request to clear one or more identified metadata tracks may be executed without affecting unrelated storage functions. In addition, the request may be executed while preserving metadata tracks unrelated to the identified metadata tracks. Thus, execution of a request to selectively clear identified global metadata tracks in accordance with the present invention will typically not cause the loss of configuration information and will not necessitate a reboot of the system. In addition, a request as described above may be executed at any point in time while the storage system is running.

摘要翻译： 用于选择性地清除诸如存储子系统中的元数据的持久性数据的方法。 该方法包括识别一个或多个元数据轨道以清除，接收来自客户端的请求以清除所识别的元数据轨道，将请求传递到存储设备驱动器，以及清除所识别的元数据轨道。 要清除的元数据轨迹可以通过与要清除的元数据或与元数据相关联的特定存储目标相关联的特定存储功能来识别。 或者，可以指定存储功能和存储目标。 优选地，可以执行清除一个或多个所识别的元数据轨道的请求而不影响不相关的存储功能。 此外，可以在保留与所识别的元数据轨道无关的元数据轨道的同时执行请求。 因此，根据本发明的执行选择性地清除所标识的全局元数据轨迹的请求通常不会导致配置信息的丢失，并且不会使系统重新启动。 此外，当存储系统运行时，可以在任何时间点执行如上所述的请求。