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Re: macppc requests/needs



On Thu, Jun 04, 2009 at 04:12:35PM +0000, John Klos wrote:
> Just FYI, while I agree that being able to boot from an FFSv2 partition 
> would be good, you can use WAPBL just fine on FFSv1.

Really?  That's confusing!

From wapbl(4):

  WAPBL requires the super block to be in the UFS2 format.  The super block
  format can be checked using the -s option with dumpfs(8), and older FFSv1
  file systems will need to be updated to the newer super block layout with
  the -c option to fsck_ffs(8).

So, there is such a thing as a FFSv1 with a super block in UFS2 format?
From this description, I was under the impression that updating the file
system's super block layout _IS_ converting it to FFSv2.

Could someone please explain the difference between a FFSv2 and an
FFSv1-with-UFS2 superblock, and what advantages FFSv2 has over this?
A friendly pointer to relevant documentation would of course be very
welcome too.

Cheers,
Peter
-- 
http://sjamaan.ath.cx
--
"The process of preparing programs for a digital computer
 is especially attractive, not only because it can be economically
 and scientifically rewarding, but also because it can be an aesthetic
 experience much like composing poetry or music."
                                                        -- Donald Knuth

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