[Parted-maintainers] Bug#579948: [parted-devel] Some debugging info

Karel Zak kzak at redhat.com
Mon Jun 14 18:40:12 UTC 2010


On Mon, Jun 14, 2010 at 01:06:09PM +0100, Colin Watson wrote:
> parted-devel, can anyone comment on this?  It seems to me that either
> (a) _get_lax_constraint should be using ped_alignment_any for its start
> alignment, rather than aligning to sectors * heads boundaries, or (b)
> Sun labels really and truly require cylinder alignment, in which case
> requests to use optimal alignment shouldn't be honoured.

The begin of the partition has to be defined in cylinders:

        struct __attribute__ ((packed)) _SunRawPartition {
                u_int32_t       start_cylinder; /* where the part starts... */
                u_int32_t       num_sectors;    /* ...and it's length */
        };

IMHO it does not make sense to use non-cylinder alignment here.

    Karel

-- 
 Karel Zak  <kzak at redhat.com>
 http://karelzak.blogspot.com





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