SYSTEMS AND METHODS FOR REPAIR RATE CONTROL FOR LARGE ERASURE CODED DATA STORAGE

摘要

Systems and methods which implement repair bandwidth control techniques, such as may provide a feedback control structure for regulating repair bandwidth in the storage system. Embodiments control a source object repair rate in a storage system by analyzing source objects represented in a repair queue to determine repair rate metrics for the source objects and determining a repair rate based on the repair rate metrics to provide a determined level of recovery of source data stored as by the source objects and to provide a determined level of repair efficiency in the storage system. For example, embodiments may determine a per storage object repair rate (e.g., a repair rate preference for each of a plurality of source objects) and select a particular repair rate (e.g., a maximum repair rate) for use by a repair policy. Thereafter, the repair policy of embodiments may implement repair of one or more source objects in accordance with the repair rate.

主权项

1. A method, implemented by processor-based logic of a storage system in which source objects are stored as a plurality of erasure coded fragments, for controlling a source object repair rate in the storage system, the method comprising:
analyzing a plurality of source objects represented in a repair queue to determine at least one repair rate metric for source objects of the plurality of source objects; determining a first repair rate based on the at least one repair rate metric for the source objects of the plurality of source objects to provide a determined level of recovery of source data stored by the plurality of source objects and to provide a determined level of repair efficiency in the storage system; and implementing repair of one or more source objects of the plurality of source objects in accordance with the first repair rate.