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SelectiveEC: Selective Reconstruction in Erasure-coded Storage Systems
USENIX Workshop on Hot Topics in Storage and File Systems
Erasure coding has been a commonly used approach to provide high reliability with low storage cost. But the skewed load in a recovery batch severely slows down the failure recovery process in storage systems. To this end, we propose a balanced scheduling module, SelectiveEC, which schedules reconstruction tasks out of order by dynamically selecting some stripes to be reconstructed into a batch and selecting source nodes and replacement nodes for each reconstruction task. So it achieves balanceddblp:conf/hotstorage/XuLLXX20 fatcat:gfhto3zg7nextak3pd634yb7va