Well, in that case you just might be able to do it. You'll need to shrink your filesystem (if you have one) ala resize2fs or similar. Then raidreconf the raid0. Then edit the partition table (there are tools to help with this, or just use fdisk very carefully) to shrink the partition. Then you can create a new partition and dump the data there. Create another similarly sized partition and raid1 them together...
That seems like it would work, but I thought raidreconf was used for adding disks to arrays, not making them smaller. How do you use raidreconf in this manner?
Thanks for your help,
Jeff Hoffmann
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