Hi Guillaume, On 11/08/2015 09:49 PM, Guillaume Paumier wrote: [trim /] > Looking at those event counts, my understanding is this: > * Two of the disks (sde, sdf) were dropped from the array for some reason. > * I didn't notice this immediately (an issue I'm addressing separately). > * A third disk (sdj) encountered a small issue today. > * The array went offline because it didn't have enough disks to function > cleanly any more. > > If I understand the documentation [1] correctly, since the event count for sdj > is very close to the event count of sd[b,c,d,g,h,i], I should be able to re- > assemble the array with these 7 disks using --force, leaving sde and sdf > aside. Once the array is assembled, I should be able to re-add sde and sdf, > and they will be re-sync'd. Yes, that is the correct response. Your situation is common. Please see the thread this weekend started by Franscisco Parada. https://marc.info/?t=144691643300001&r=1&w=2&n=12 You should provide "smartctl -i -A -l scterc /dev/sdX" reports for your drives. If you can find an old syslog for when your two worst drives fell out, it might help. Phil -- 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