Thank you MBS,
Ok I did everything from beginning (with the newest trunk) and tried to install everything I need.
Because I have to few space I made an overlay over my rootfs see output from df h:
rootfs 14.8G 41.3M 14.0G 0% /
/dev/root 2.0M 2.0M 0 100% /rom
tmpfs 14.1M 896.0K 13.2M 6% /tmp
/dev/sda1 14.8G 41.3M 14.0G 0% /overlay
overlayfs:/overlay 14.8G 41.3M 14.0G 0% /
tmpfs 512.0K 0 512.0K 0% /dev
My rootfs is now 15GB but, when I perform free:
root@OpenWrt:/etc# free
total used free shared buffers
Mem: 28892 23476 5416 0 2512
-/+ buffers: 20964 7928
Swap: 0 0 0
Do I have now 15GB and free lies, or do I have just 5MB free, which is not enough for my wishes Later I wanted to build a swapfile on my new fs, but do see openwrt my rootspace?
Also to you nebia88, thanks a lot.This I will do, as soon as I come back into the same troubles, but I believe this is a little bit time consuming.
Sooner or later I will build everything myself, also to make new packages after my wishes, but for the moment, I would be glad, if everything would work as I expect.
PS:
my /etc/config/fstab looks like this:
config global
option anon_swap '0'
option anon_mount '0'
option auto_swap '1'
option auto_mount '1'
option delay_root '5'
option check_fs '0'
config mount
option target /overlay
option fstype 'ext4'
option options 'rw,realtime,barrier=1,data=ordered'
option enabled_fsck '1'
option enabled '1'
option device '/dev/sda1'
option is_rootfs '1'
#config swap
# option enabled '1'
# option device '/dev/sda2'
config global 'automount'
option from_fstab '1'
option anon_mount '0'
config global 'autoswap'
option from_fstab '1'
option anon_swap '0'
config mount
