On Tue, 12 Feb 2013, Phillip Susi wrote:

I just noticed that reducing the used dev size has not moved the 
metadata, so it is looking like it just isn't possible to shrink the md 
partition with metadata format 1.0?

From "man mdadm"

"The different sub-versions store the superblock at different locations on 
the device, either at the end (for 1.0), at the start (for 1.1) or 4K from 
the start (for 1.2)"

I don't really see how it could be shrunk with a superblock at the end, 
then you wouldn't be able to find it next time...

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se