[Gllug] RAID on LVM - heracy?

[Alain Williams]

On Fri, Sep 28, 2007 at 05:17:26PM +0100, Ken Smith wrote:
> I've been using LVM for a while both on plain disks and on raided setups 
> both software and hardware.
> 
> But consider this. If I had a collection of disks, none really suitably 
> large or equal-ish in size for raid by themselves,  would it be valid to 
> group some of them together as for example - LV1 and some others 
> together as LV2  and so on and then run soft raid over the top?
> 
> Could you even run LVM over the resultant volume to retain the 
> flexibility of resizing file systems....

I do it the other way, get pairs of disks, mirror them (mdadm) and build
LVMs on top of that.

Works well for me.

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Alain Williams
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