[Buildroot] Need help with genimage

["Jörg Krause" <joerg.krause@embedded.rocks>]

Hi Baruch,

On Sun, 2017-01-08 at 19:45 +0200, Baruch Siach wrote:
> Hi J?rg,
> 
> On Sun, Jan 08, 2017 at 12:58:51PM +0100, J?rg Krause wrote:
> > I am able to generate the sd card image and copy it to the sd card
> > using Suses imagewriter. The board boots fine. However, the rootfs
> > size
> > is not 512MB as expected:
> > 
> > # df -hT
> > Filesystem???????????Type????????????Size??????Used Available Use%
> > Mounted on
> > /dev/root????????????ext4???????????38.7M?????37.9M?????????0 100%
> > /
> > devtmpfs?????????????devtmpfs??????501.9M?????????0????501.9M???0%
> > /dev
> > tmpfs????????????????tmpfs?????????502.4M?????????0????502.4M???0%
> > /dev/shm
> > tmpfs????????????????tmpfs?????????502.4M??????3.9M????498.4M???1%
> > /tmp
> > tmpfs????????????????tmpfs?????????502.4M?????24.0K????502.4M???0%
> > /run
> > 
> > I am not able to create any file larger file on the filesystem nor
> > start some programs.
> > 
> > What am I missing here? Can somebody enlighten me please :-)
> 
> Unless you set BR2_TARGET_ROOTFS_EXT2_BLOCKS and
> BR2_TARGET_ROOTFS_EXT2_INODES?
> you'll get a minimal ext2/3/4 filesystem with no free space.
> Alternatively,?
> you may run on target the resize2fs tool from the e2fsprogs package
> on the?
> root filesystem to expand the filesystem to the size of the
> partition.

Which values should I use for blocks and inodes if I set the rootfs
size to 512M in genimage.cfg? Any suggestions?

J?rg