This field is there even when I unmount the device... even in a completely "clean" device, which I have just connected to.

root@OpenWrt:~# df
Filesystem           1K-blocks      Used Available Use% Mounted on
rootfs                    1088       844       244  78% /
/dev/root                 2048      2048         0 100% /rom
tmpfs                    14608       560     14048   4% /tmp
tmpfs                      512         0       512   0% /dev
/dev/mtdblock3            1088       844       244  78% /overlay
overlayfs:/overlay        1088       844       244  78% /

Moreover, I checked the device's free space when I have mounted the USB and it was around 7.9GB. (so it was recognized).

1) Where are the packages stored, when an "opkg install package " is performed?

2)Do u think that a pivot root instead of pivot overlay will solve this issue?

3)Or it is better to partition the USB and use this "swap" feature?

Thanks a lot,

Theodoros 



On Thu, Jan 30, 2014 at 5:22 PM, Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de> wrote:
You have mounted /overlay and a different overlay fs (sizes differs). That is very strange! Better you start from the top with a clean installation and then just follow exactly the guide in the Wiki.

Kind regards,
Johannes Morgenroth

Am 30.01.2014 16:36, schrieb Theodoros Bourchas:
root@OpenWrt:~# df
Filesystem           1K-blocks      Used Available Use% Mounted on
rootfs                    1088      1040        48  96% /
/dev/root                 2048      2048         0 100% /rom
tmpfs                    14608       764     13844   5% /tmp
tmpfs                      512         0       512   0% /dev
/dev/mtdblock3         7822336       916   7821420   0% /overlay
overlayfs:/overlay        1088      1040        48  96% /
/dev/sda1              7822336       916   7821420   0% /overlay