software raid on freebsd5

Greg 'groggy' Lehey grog at
Tue Apr 29 21:26:23 PDT 2003

On Tuesday, 29 April 2003 at 18:44:51 +0200, Axel S. Gruner wrote:
> Hi.
> I want to use software raid 5 on my freebsd 5 box.  So, i am running
> freebsd 5 for a while, and have a lot of ports installed, and i dont
> want to erase all the stuff, is there a way to setup vinum or
> raidctl on that box?

You can't change an existing linear partition to RAID-5 and keep the

> i have 3 harddrives installed, 2 of them are totally clean, 1 is
> running FreeBSD.  And, is it possible in the future, to put on or
> two more devices to that raid?

With a lot of trickery, you could do that, but you'd be better off
borrowing a fourth disk to copy the data to, and then move the
contents of one of them back to the first disk after you've copied the

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