On Saturday June 26, chris@xxxxxxxxxxxxxx wrote: > > > Whenever I reboot my computer the RAID5 comes back in degraded mode, > and mdadm outputs the following info: > > Number Major Minor RaidDevice State > this 0 34 1 0 active sync /dev/hdg1 > 0 0 34 1 0 active sync /dev/hdg1 > 1 1 34 65 1 active sync /dev/hdh1 > 2 2 33 1 2 active sync /dev/hde1 > 3 3 33 65 3 active sync /dev/hdf1 > 4 4 22 1 4 active sync /dev/hdc1 > 5 5 0 0 5 faulty removed > 6 6 3 65 6 active sync /dev/hdb1 > > If I do a mdadm /dev/md0 --add /dev/hdd3 the missing disk is re-added > and everything seems fine after it has worked away for a few hours - > however after another reboot the disk has gone again. > > Does anyone have any idea what is going on? At a guess, I'd say that you are relying on auto-detection of raid arrays using raid-auto-detect partition types, and that /dev/hdd3 isn't set to raid-auto-detect. If that isn't it, some kernel log messages would probably help, along with more details of why you expect it to work (e.g. are you using raidstart, mdadm, autodetect, etc). 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