[parted-devel] [PATCH 9/9] libparted: device mapper uses 512b sectors

[Phillip Susi]

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On 2/6/2015 11:24 AM, Brian C. Lane wrote:
> We tell device-mapper the size of the disk and the partitions,
> right now we are using native disk sector units for this. We need
> to make sure we use 512b units when talking to device-mapper.

Yes, but the "native disk sector units" are always 512 bytes since
that is what devmapper tells us it is.  We have no idea that there is
a 4k sector disk underneath devmapper.

> On 512b sector disks it will basically be a noop, yes. But they
> aren't the problem.

It's *always* a noop though since the devmapper disk is *always* using
512 byte sectors, even when it is stacked on top of a 4k disk.


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