Consistency without ordering dependency
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 30, 2013
Grant Date -
Jun 16, 2011
app pub date -
Dec 11, 2009
filing date -
Dec 11, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Aspects of the subject matter described herein relate to maintaining consistency in a storage system. In aspects, one or more objects may be updated in the context of a transaction. In conjunction with updating the objects, logical copies of the objects may be obtained and modified. A request to write the updated logical copies is sent to a storage controller. The logical copies do not overwrite the original copies. In conjunction with sending the request, a data structure is provided for the storage controller to store on the disk. The data structure indicates the one or more objects that were supposed to be written to disk and may include verification data to indicate the content that was supposed to be written to disk. During recovery, this data structure may be used to determine whether all of the object(s) were correctly written to disk.
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