Attended sysupgrade - allow user to select rootfs size in some way

[frollic]

Not if you'd have two parallel installs, install new release from old, resize, and boot into new.
Alternate between them on every new release.

Sysupgrade help for x86_64

So, I was playing with my APU1, and thought I'd try it myself ... The starting point is a SD card with a snapshot image written, and I added an additional 21.02.01 to the same SD card, then rebooted into 21.02.01. This is all done from the already running snapshot version note: with the default size of /dev/sda1, you will only be able to fit three kernels. you'll need: opkg install resize2fs fdisk blkid create new partition for the new openwrt version, I used 250MB. fdisk /dev/sda Comman…

Once you have the partitions in place, there are just three commands + the change in grub (which would be only default boot option, if you use static kernel names, and partitions as root= parameter in grub, instead of PARTUUID).