Neil, >From md.c, there must be some changes or improvement to RAID1&5 resync code, which enabled the request based resynchronization. Does it mean we could enable or disable this resync? If so, how could we make it(where in the code)? Why do we have this feature the disk will be under no integrity if we disable this resync? Thanks in advance, Bo - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html