On 05/30/2016 06:00 PM, bobzer wrote: > I did follow his advice for the smartctl i can't right now but i will > post the output > my drives are desktop grade normal seagate, not NAS nor entreprise so > i will retry but i will limit the speed of reconstruction with : > echo 40000 > /proc/sys/dev/raid/speed_limit_max > echo 1000 > /proc/sys/dev/raid/speed_limit_min > I hope that it will permit to finish the rebuilding No, that is unlikely to help. You need to read about "timeout mismatch" as you clearly have a bad case of it. This is not a new issue, as you can see from the dates of the following: http://marc.info/?l=linux-raid&m=139050322510249&w=2 http://marc.info/?l=linux-raid&m=135863964624202&w=2 http://marc.info/?l=linux-raid&m=135811522817345&w=1 http://marc.info/?l=linux-raid&m=133761065622164&w=2 http://marc.info/?l=linux-raid&m=132477199207506 http://marc.info/?l=linux-raid&m=133665797115876&w=2 http://marc.info/?l=linux-raid&m=142487508806844&w=3 http://marc.info/?l=linux-raid&m=144535576302583&w=2 -- 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