there were two optimizations-redirection of reads and piggybacking of writes-which first introduced in paper "Performance Analysis of Disk Arrays under Failure" 16th VLDB conference 1990. redirection of reads: the user accesses to data that has already been reconstructed are serviced by (redirected to) the replacement disk, rather than invoking on-the-fly reconstruction as they would if the data were not yet available. piggybacking of writes: the user reads that cause on-the-fly reconstruction also cause the reconstructed data to be written to the replacement disk. have these two features been implemented in md driver now? if so, where i can find them? if not, is there any plan on them? Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
