On Tuesday May 12, lrhorer@xxxxxxxxxxx wrote: > > But doesn't creating the array with the drive wipe the contents? If so, it > doesn't seem to me this provides much redundancy. No. Creating an array does not wipe the contents. It might cause a resync which will copy contents from one drive to the other and I don't promise which one. However if you: mdadm -C /dev/md0 --level 1 -n 2 /dev/foo missing mdadm /dev/md0 --add /dev/bar then the contents on /dev/foo will not be changed (except for a few K at the end for the metadata) and then all of foo will be copied to bar. 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
