[lug] Convert swap from raid0 to raid1

[Dan Ferris]

Why would you want to mirror swap space?  I can think of a few things 
that will help to make a box slow and that is one of them.  If your 
computer swaps it will have to make twice as many writes as it does now.

Dan

dio2002 at indra.com wrote:
> On a recently installed system, I accidentally created a raid 0 for my
> swap when i really wanted to make it raid 1.
> 
> I'm trying to figure out the best way to convert it back to raid 1 mirror.
>  I don't think it's possible to do this while my system is up and running
> without destroying something since it depends on swap.
> 
> If i boot into rescue mode, i need to mount root which sits on lvm on top
> of raid1.  not sure if that's going to happen automagically or if i'm
> going to have to spin some manual magic.  and then i'm going to have to
> change the config.  most of the examples i've seen do this via the command
> line but don't actually create a config file.  so i'm a little confused.
> that's the drawback to the install, it automates it for you but when you
> need to manually configure things, you scramble.
> 
> i'm searching for answers as we speak.  but if anybody can offer a few
> steps or caveats to look out for while doing this that'd be great.
> 
> fwiw, i'm glad this is happening now.  it'll be a good exercise for future
> hairraisers.
> 
> 
> 
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