I’m trying to execute the follow command: “mount -o remount,ro /”. After this, I receive this error message: “mount: mounting ubi0:rootfs on / failed: Device or resource busy”
In old images (built using buildroot 2016) was possible to do this operation. I’d decided to use Yocto Project as our image builder and this operation is not possible more.
I tested with our regular Bsp and remounting to read only partition worked well.
Could you provide the output of mount and mount -v -o remount,ro rootfs ?