On Wednesday December 22, ferenc@xxxxxxxxxxxxx wrote: > Hello list, > > Does anybody know what this means: > > # mdadm -D /dev/md3 > <snip> > Number Major Minor RaidDevice State > 0 3 6 0 active sync /dev/hda6 > 1 0 0 0 sync > > 2 22 6 2 active sync /dev/hdc6 > > Please help. Which disk is '1 0 0 0 sync'? The array is currently > degraded. How do I remove number 1 and bring number 2 up? This is a missing drive, that is marked as in-sync, which is bad. I don't know how it happened, but the best way to fix it is to remake the array: umount .... mdadm -S /dev/md3 mdadm -C /dev/md3 -R -l1 -n2 /dev/hda6 missing mdadm /dev/md3 -a /dev/hdc6 should make it work. It won't destroy any data 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