LUKS and RAID-5

[Bruno Wolff III]

On Mon, Oct 19, 2009 at 19:38:04 +0200,
  Markus Lindholm <markus.lindholm at gmail.com> wrote:
> Short question:
> 
> - In Fedora 11 can I use LUKS to encrypt an ext3 filesystem that is
> based on a hardware RAID-5 and later be able to expand the filesystem
> by adding physical disk to the RAID?

If luks is run on top of the raid system (which it pretty much has to be
for hardware raid), then making changes to the array that result in the
same data being presented will not break luks. What you run on top of
luks (ext3 in this case) isn't relevant.