Heinz Sporn wrote:
Question: may I run mkraid /dev/md0 on the fly now or will that somehow
destroy the partition table on the entire disk A ?
This wont't work since only data written to md0 gets mirrored. You can't mirror
an existing partition. An mkraid will probably destroy partition A2.
You'll have to unmount the partiton A2 and mount md0 at some time. There's no
way to do this on the fly AFAIK.
But theres still a little shortcut:
First, let me recommend you mdadm. It's a replacement for the old raidtools.
*Much* better IMHO.
- Create a new RAID1 in degraded state from B2:
# mdadm --create /dev/md0 --level 1 --raid-devices 2 /dev/B2 missing
- Copy contents from A2 to md0
- umount A2
- add A2 to md0:
# mdadm /dev/md0 --add /dev/A2
Christoph
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