On 26-03-19 12:31, jairo wrote: > > Thank you very much Mike. > > > >> With NAND you'll probably have a filesystem (jffs2 or UBI) in place. >> With that, you could just use a package manager like opkg to update >> sofware. If the box has a network connection, just running "opkg >> update && opkg upgrade" will install the current releases with the >> minimum effort. We've been using this on a million boxes and it works >> fine (until someone decides to patch libc and you get a 300+ package >> upgrade). > > > Is there a public repository with ipk packages, or do I have to create > my own repository?
OpenEmbedded already created it, it's usually in build/tmp-glibc/deploy/ipk To turn it into a "feed" just share this directory through http. On my development setup, I installed apache and created a symlink to that directory. You'll also need to add "distro-feed-configs" to your image (and maybe append it a bit to match your system). > Can opkg solve dependencies well? Can it create problems? Haven't seen any problems with it, and it installs dependencies along with packages. >> Linux is also capable of upgrading a running system. Basically, copy >> some >> executables to a tmp filesystem, remount everything read-only, and >> change root >> to the tmp part. Then you can rewrite partitions and reboot. >> >> In any case, you should have a u-boot configuration that allows it to >> be >> debricked. Typically a USB stick or DFU will do nicely if your board >> has USB. >> Or even serial... > > I'm using Barebox, I think there would be no problems out there, the > bad part of using opkg is that the product should be used by clients > without much knowledge of linux. In that part I think it would be > easier for customers to use a update system such as Rauc or any similar The system that's using ipkg is a TV settop box, and the average user has about the intellectual capabilities of a potato. To actually upgrade, the user selects "settings" and "update software" from the main menu using the remote control, and doesn't even have to leave the couch. (To recover a bricked box, or install from scratch, the procedure is much more complicated: Download a zip file, unpack on a USB stick, put it into the settop and switch it on. That'd require intellect slightly above your average vegetable but is still doable apparently.) Being user-friendly is about providing a proper wrapper, it's not about technology. -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
