Re: raidframe performance question

[Matthias Scheler <tron%zhadum.org.uk@localhost>]

On Fri, May 06, 2011 at 09:34:57PM -0400, Thor Lancelot Simon wrote:
> On Fri, May 06, 2011 at 04:26:05PM -0700, Paul Goyette wrote:
> > On Fri, 6 May 2011, Matthias Scheler wrote:
> > >> c: 976768002       63    unused     0    0      # (Cyl.   0*- 969015*)
> > >> d: 976773168        0    unused     0    0      # (Cyl.   0 - 969020)
> > >> e: 976768002       63      RAID                 # (Cyl.   0*- 969015*)
> > >
> > >... and your partitions are not aligned.
> > >
> > >Please change the offset of "c" and "e" to block 64.
> > 
> > Duh.   :)
> 
> Hang on a minute.  The sectors are numbered starting with 0 ...

Yes, of course.

> ... -- aren't they already aligned?

No, they aren't. 4KB blocks means that there 8 logical 512KB sectors
per phyiscal block. Each block offset should therefore be a multiple
of eight.

        Kind regards

-- 
Matthias Scheler                                  http://zhadum.org.uk/