I reboot the device, but the memory still full. although the installation of package unfinished, so I have nothing to remove to free up my space.
now every time I login via SSH, this alert appears:
Your JFFS2-partition seems full and overlayfs is mounted read-only.
Please try to remove files from /overlay/upper/... and reboot!
So please help me about this things:
How to remove unfinished package ( opkg install openvpn-openssl) to free up the space?
Is there a solution to increase the available space? like using USB Flash drive as secondary partition for installing packages on it.
The jffs2 overlay is much less space-efficient than the squashfs root. Try creating a custom image with the packages you need and avoid installing packages with opkg.
Is it the only solution? This does not make sense! Is there any way to get rid of unnecessary files without factory reset? I just need to remove openvpn related files, but the problem is the openvpn-openssl does not install completely, so I can't find and remove it simply by entering the opkg remove openvpn-openssl.
i tried removing files from overlay but could not get config to apply, so i did firmware upgrade with same version keep config/settings, update completed and i can edit settings again. I got into trouble when i installed iperf, and devices rebooted and gave me overlay read only, so try what i did maybe it helps
i posted already a solution for such kind of problems -> to cleanup+reformat overlay and how to restore to free up space from the dirty jffs partition. see in forum ...