Mike Williams wrote:
Quicker method :)
create B1 and B2
umount /dev/A2
# mdadm --create /dev/md0 -l1 -n2 /dev/A2 /dev/B2
You CAN create a mirror of an existing partition, and NOT lose data.
I know, I've done it.
But how does it know which of the devices is the master? Does it simply copy the
first device mentioned to the second?
Also the RAID configuration gets stored on the partition. (see mdadm -Es
/dev/hdax). Where will it be put so the filesystem doesn't get corrupted? Are
there some reserved blocks the fs won't touch?
Christoph
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