[Parted-maintainers] [parted-devel] a problem about 100% indicating the whole disk

[Phillip Susi]

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On 11/6/2013 1:22 AM, zhuyj wrote:
> Hi, Phillip
> 
> Thanks for your reply. I made tests. Other percentages will not get
> the incorrect treatment. Only when percentage is 100%, this problem
> will appear, that is, parted fails to work.

The problem has two parts: the first is that the power of two size is
triggering the exact placement, and the second is that with 100%,
rounding error ends up changing the size to 1 sector past the end of
the disk, and when that is combined with the exact placement, causes
you to be unable to create the partition.  The exact placement still
applies to the other percentages and it shouldn't.

This should become visible as failures if you try to create multiple
partitions using percentages, where the exact placement rule will
likely cause a problem creating a partition starting at 50% of the
disk, when the first partition ends at 50%.


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