Method, system, and program for restoring data in cache
    1.
    发明申请
    Method, system, and program for restoring data in cache 有权
    缓存中恢复数据的方法,系统和程序

    公开(公告)号:US20040059870A1

    公开(公告)日:2004-03-25

    申请号:US10255026

    申请日:2002-09-24

    IPC分类号: G06F012/16

    摘要: Provided are a method, system, and program for maintaining data in a first cache and second cache, wherein a backup cache maintains a backup copy of data in the first cache, and wherein the first cache is used to cache a first set of data in a storage system and the second cache is used to cache a second set of data in the storage system. An unavailable state of the first cache is detected. In response to detecting the unavailable state, requests to the first set of data are blocked and at least one space in the second cache is allocated for data in the backup cache. Requests to the first set of data are allowed to proceed after the at least one space is allocated in the second cache and before the data in the backup cache is copied to the at least one allocated space in the second cache. The data from the backup cache is copied to the allocated at least one space in the second cache after the requests to the first set of data are allowed to proceed.

    摘要翻译: 提供了一种用于在第一高速缓存和第二高速缓存中维护数据的方法,系统和程序,其中备份高速缓存维护第一高速缓存中的数据的备份副本,并且其中第一高速缓存用于高速缓存第一组数据 存储系统和第二高速缓存用于在存储系统中缓存第二组数据。 检测到第一个缓存的不可用状态。 响应于检测不可用状态,阻止对第一组数据的请求,并且为备份高速缓存中的数据分配第二高速缓存中的至少一个空间。 允许在第二高速缓存中分配至少一个空间之后并且在将备份高速缓存中的数据复制到第二高速缓存中的至少一个分配的空间之前对第一组数据进行请求。 在对第一组数据的请求被允许继续之后,来自备份高速缓存的数据被复制到第二高速缓存中分配的至少一个空间。

    Method, system, and article of manufacture for preventing data loss
    2.
    发明申请
    Method, system, and article of manufacture for preventing data loss 有权
    防止数据丢失的方法,系统和制造

    公开(公告)号:US20030233613A1

    公开(公告)日:2003-12-18

    申请号:US10170666

    申请日:2002-06-12

    摘要: Provided are a method, system, and an article of manufacture for preventing data loss. Modified data is stored in a volatile storage. The stored modified data is copied onto a non-volatile storage. A determination is made as to whether the non-volatile storage should be checked for errors. In certain implementations, on determining that the nonvolatile storage should be checked for errors the non-volatile storage is checked for errors. If on checking the non-volatile storage is found to have an error, an indication of the error is provided.

    摘要翻译: 提供了一种用于防止数据丢失的方法,系统和制品。 修改后的数据存储在易失性存储器中。 存储的修改数据被复制到非易失性存储器上。 确定是否应检查非易失性存储器的错误。 在某些实现中,在确定应该检查非易失性存储器的错误时,检查非易失性存储器的错误。 如果检查非易失性存储器发现有错误,则提供错误的指示。

    Method, system, and program for destaging data in cache
    3.
    发明申请
    Method, system, and program for destaging data in cache 失效
    用于在缓存中降级数据的方法,系统和程序

    公开(公告)号:US20030105928A1

    公开(公告)日:2003-06-05

    申请号:US10005003

    申请日:2001-12-04

    IPC分类号: G06F013/00

    CPC分类号: G06F12/0871 G06F12/0804

    摘要: Provided is a method, system, and program for destaging data from a first computer readable medium to a second computer readable medium. A list of entries indicating data blocks in the first computer readable medium is scanned. For each entry scanned, a determination is made as to whether the data block indicated in the scanned entry satisfies a criteria. If the data block indicated in the scanned entry satisfies the criteria, then a destage operation is called to destage the data block in the scanned entry from the first computer readable medium to the second computer readable medium. If the called destage operation is not initiated, then the scanned entry is removed from the cache list. The removed scanned entry is added to one destage wait list. During one destage operation, data blocks indicated in entries in the destage wait list are destaged.

    摘要翻译: 提供了一种用于将数据从第一计算机可读介质降级到第二计算机可读介质的方法,系统和程序。 扫描第一计算机可读介质中指示数据块的条目列表。 对于扫描的每个条目,确定扫描条目中指示的数据块是否满足标准。 如果扫描条目中指示的数据块满足标准,则调度一个转移操作以将扫描条目中的数据块从第一计算机可读介质转移到第二计算机可读介质。 如果未启动所呼叫的终止操作,则从缓存列表中删除扫描的条目。 已删除的扫描条目将添加到一个目的地等待列表中。 在一个运行期间,在目的地等待列表中的条目中指示的数据块已停止运行。

    Method, system, and program for caching data in a storage controller
    4.
    发明申请
    Method, system, and program for caching data in a storage controller 失效
    用于缓存存储控制器中数据的方法,系统和程序

    公开(公告)号:US20030037204A1

    公开(公告)日:2003-02-20

    申请号:US09932765

    申请日:2001-08-17

    IPC分类号: G06F013/00

    摘要: Provided is a method, system, and program for caching updates to one target storage device in a first and second memories, wherein the target storage device is one of a plurality of storage devices. A determination is made of an allocation of available space in the second memory to the storage devices, wherein a total of the allocation of the available space to all the storage devices exceeds one hundred percent of the available space in the second memory. An update to one target storage device is received and then a determination is made as to whether adding the update to the second memory will exceed the allocation of available space for the target storage device in the second memory. One copy of the update is written to the second memory if adding the update to the second memory will not exceed the allocation of available space for the target storage device.

    摘要翻译: 提供了一种用于将更新缓存到第一和第二存储器中的一个目标存储设备的方法,系统和程序,其中目标存储设备是多个存储设备之一。 确定第二存储器中的可用空间的分配给存储设备,其中对所有存储设备的可用空间的总共分配超过第二存储器中的可用空间的百分之一。 接收对一个目标存储设备的更新,然后确定是否将对第二存储器的更新添加将超过第二存储器中的目标存储设备的可用空间的分配。 如果将更新添加到第二个内存中,则将更新的一个副本写入第二个内存不会超过目标存储设备的可用空间分配。