Hi all, I had a go at hacking up a tool to copy sparse images to cards less wastefully (and hopefully faster) by only coping to the important data: See the src/fibcp.c here:
git://git.linaro.org/people/dmart/tools.git It's used like this: # fibcp image.bin /dev/<sdcard> There are some caveats, most notably: * You have to be root, since the tool relies on the FIBMAP ioctl. * The filesystem the image file is generated on must not "optmise" explicit writing of blocks of zeros by generating a sparse file. ext[2-4] should work; not sure about btrfs. * The image must be freshly generated via a loop mount (e.g., linaro-media-create --image_file ... copied, tar'd or gzip'd images won't work). It works well enough that e2fsck passes after a writing an image to a card which was previously full of random data. Anyway, it's there if anyone wants to play with it -- comments welcome. Cheers ---Dave _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
