On Friday 07 January 2011, Rodolfo Gouveia wrote:
> On 01/06/2011 05:43 PM, Nick Holland wrote:
> [snip]
>
> > What new feature are you after?
> > Does that feature apply to crypto softraid?
> > There's the answer. :)
>
> None actually. :-)
> I was just being cautious not run in problems with an "old" softraid
> volume and newer systems but the upgrade guide clearly states that at
> least for this release, 4.8, backwards compatibility was achieved.
For the record, the softraid metadata change between 4.7 and 4.8 was to
facilitate boot loader storage within the softraid volume. The original
change was not backwards compatible and required a complete recreation of the
softraid volume. During c2k10 this was redeveloped so that an in-place
upgrade is performed - once you boot a 4.8 kernel the metadata will be
upgraded (obviously a 4.7 kernel will no longer be able to read it).
The in-place upgrade results in a boot loader storage area of 0 bytes in size
and as a result, you will not be able to boot from this softraid volume when
this functionality is supported.
--
"Stop assuming that systems are secure unless demonstrated insecure;
start assuming that systems are insecure unless designed securely."
- Bruce Schneier
