I'd like to convert an existing partition to RAID 1 using a portion of a new, blank drive. All of the examples I've seen involve creating the RAID device with the *empty* partition (sda4), copying the data from the old partition to the new RAID, then adding the old partition to the RAID set. >From my modest understanding of how linux software RAID works, it seems I should be able to take an existing partition containing data (in this case sdb4 mounted as /mail) and build a RAID 1 array with something similar to this: umount /dev/sdb4 mdadm --build /dev/md0 --level=1 -n2 /dev/sdb4 missing mount /dev/md0 /mail mdadm --add /dev/md0 /dev/sda4 Will that work? Or am I misunderstanding something fundamental? Thanks! -Ben -- 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
