[linux-lvm] automatically filter disks with imsm or ddf superblocks

[Alasdair G Kergon]

On Wed, Sep 05, 2012 at 05:47:53PM +0200, Miquel van Smoorenburg wrote:
> Note that dev-ddf.c and dev-imsm.c have "Copyright: Miquel van  
> Smoorenburg" headers.. it looks like lvm only has redhat copyrighted  
> stuff in it. Feel free to remove my copyright there, and/or add redhat  
> copyright. The contents of those files aren't really original anyway,  
> mostly copied from dev-md.c.

Copyright is additive in these circumstances: keep our copyright line and 
append yours.

> - mdadm calls this format "imsm", should we keep that name or use
>   "matrix", or perhaps "(Intel) RST" since Intel renamed "matrix
>   raid" to "Rapid Storage Technology" last year.

Internally, I'm not bothered. Docs should probably mention alternative
names.

> - right now the md_component_detection configuration option also
>   turns on/off ddf and imsm detection. I think that is fine as in
>   linux it is the "md" driver that supports those formats. 

I agree.  It's unlikely people will need one without the other.

Alasdair