On Thursday September 22, orion@xxxxxxxxxxxxx wrote: > I created a new 8 disk raid5 set with no spares. Now, when I boot I end > up with: > > > md3 : active raid5 sdp1[7] sdo1[6] sdn1[5] sdm1[4] sdl1[3] sdk1[2] sdi1[0] > 3418687552 blocks level 5, 64k chunk, algorithm 2 [8/7] [U_UUUUUU] > > which I believe is a "degraded" array. I then have to do: > > mdadm -M -a /dev/md3 /dev/sdj1 > > to add in the missing disk. I had to do this after it was created as well. > > Why does this happen? What am I not understanding? I suspect that partition sdj1 isn't marked as 0xfd (auto-detect). NeilBrown - 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