[Buildroot] [PATCH 1/2] package/bmap-tools: new package

Nicolas Carrier nicolas.carrier at orolia.com
Sat Oct 26 19:16:49 UTC 2019


On Sat, 2019-10-26 at 19:32 +0200, Thomas Petazzoni wrote:
> On Sat, 26 Oct 2019 14:41:18 +0000
> Nicolas Carrier <nicolas.carrier at orolia.com> wrote:
> 
> > +       Tool to flash image files to block devices using the block
> > map
> > +       bmaptool is a generic tool for creating the block map
> > (bmap)
> > +       for a file, and copying files using the block map. The idea
> > is
> > +       that large file containing unused blocks, like raw system
> > +       image files, can be copied or flashed a lot faster with
> > +       bmaptool than with traditional tools like "dd" or "cp".
> 
> Another question is that you're packaging this for the target, but it
> sounds like a tool that would be mainly useful on the host to
> prepare/flash a SD card. Do you have a use case for having this tool
> on
> the target ?

Yes, I use it to speed up the flashing of the EMMC too, it's part of
our update or bootstrap procedures.

> 
> Thomas
> --
> Thomas Petazzoni, CTO, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com
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