[Tfug] Crappy USB LVM/Software RAID10 performance?

[Tom Rini]

On Fri, May 29, 2009 at 01:34:59PM -0700, Bowie J. Poag wrote:

> Two striped partitions, existing on two different drives, can be a
> mirror of a striped data set, or a striped mirrored data set. Again,
> they are two different things. Think of it like this--The difference
> between RAID0+1 and RAID10 is like a steak thats been marinated in
> steak sauce THEN grilled, versus a steak thats been grilled then
> covered in steak sauce.* They are two different methods of preparation
> of the same piece of delicious beef just as RAID10 and RAID0+1 are
> different methods of preparation of the same piece of data.<br>

So, you're having LVM take care of splitting things up so that in the
end you have 1 750'ish device that in theory might be faster than a
simple mirror, right?  I'm suggesting that the overhead of doing this,
especially over USB, might be part of your problem.

-- 
Tom Rini