On Mon, Aug 31, 2015 at 10:38 AM, Nicolas Dechesne <nicolas.deche...@linaro.org> wrote: > On Sat, Aug 29, 2015 at 2:36 PM, Richard Purdie > <richard.pur...@linuxfoundation.org> wrote: >>> >>> Assuming that make_ext4fs is a tool to create an ext4 file system, >>> what's the difference between that and our mke2fs which is used to >>> create ext4 file systems? >>> >> We've worked quite hard to land the ext4 rootfs creation code into >> upstream e2fsprogs. I'd like to understand if we're missing anything for >> that to work with fastboot. If we are, I suspect it wouldn't be hard to >> add and should save maintenance of a separate tool (support in e2fsprogs >> means we get any other ext* improvements for free). > > thanks for the feedback. > > I sent this as RFC , because I wanted to initiate a discussion... I > decided to simply move existing recipes from meta-smartphone/android > for that purpose. > > compared to 'regular' ext4 images , fastboot added the (convenient) > ability to support sparse images, to reduce the size of what is > transmitted over the USB, when flashing (and reduce the size of > writting to eMMC). For devices with 8GB+ eMMC that is a big deal > whether we flash a raw ext4 image, or its sparse'd version. More info > about fastboot sparse format at [1].
It does help for images it seems; did you see if someone has propose a patch for e2fstools to enable this? -- Otavio Salvador O.S. Systems http://www.ossystems.com.br http://code.ossystems.com.br Mobile: +55 (53) 9981-7854 Mobile: +1 (347) 903-9750 -- _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-core
