DETERMINING SLICES USED IN A RECONSTRUCTION

摘要

A method for a dispersed storage network (DSN) begins by receiving a read data object request from for a data object stored as a plurality of sets of encoded data slices in a set of storage units. The method continues by selecting a read threshold number of encoded data slices for retrieval. The method continues by issuing read slice requests to at least some of the storage units of the storage set to recover the selected read threshold number of encoded data slices. The method continues by receiving read slice responses from at least some of the storage units and selecting a decode threshold number of encoded data slices. The method continues by decoding the selected decode threshold number of encoded data slices to reproduce the data and generating audit information based on the selected slices for retrieval, the received slice, and the selected slices for decoding.

主权项

1. A method for execution by one or more processing modules of one or more computing devices of a dispersed storage network (DSN), the method comprises:
receiving a read data object request from for a data object stored as a plurality of sets of encoded data slices in a set of storage units; selecting, for each of the plurality of sets of encoded data slices, a read threshold number of encoded data slices for retrieval; issuing read slice requests to at least some storage units of the set of storage units to recover the selected read threshold number of encoded data slices; receiving read slice responses from at least some of the storage units, the read slice responses including received encoded data slices of the selected read threshold number of encoded data slices; selecting, for each of the received read slice responses of a set of the plurality of sets of encoded data slices, a decode threshold number of encoded data slices; decoding the selected decode threshold number of encoded data slices to reproduce the data; and generating audit information based on the selected read threshold number of encoded data slices for retrieval, the received read slice responses, and the selected decode threshold number of encoded data slices.