I managed to find a solution in the list archives (imagine that! I should've looked there sooner): http://marc.theaimsgroup.com/?l=linux-raid&m=95200941830954&w=2 Takes some trickery to get it to work on a root filesystem, but it can be done. :) Micah ----- Forwarded message from Micah Anderson <micah@riseup.net> ----- > Date: Tue, 19 Feb 2002 19:41:06 -0800 > From: Micah Anderson <micah@riseup.net> > To: linux-raid@vger.kernel.org > Subject: creating raid with existing data? > > I've got /dev/sda with data on it, I want to add /dev/sdb on as a > mirror (raid-1), can I do this without destroying data on /dev/sda > when creating the raid? I've setup /dev/sdb to have all the same > partitions and sizes as /dev/sda has, and I've setup a raidtab file so > that all the devices match up, but I am a little paranoid about > creating the raid because I dont want to destroy data on /dev/sda. > > Thanks! > Micah ----- End forwarded message ----- - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html