On Fri, 9 Dec 2022 at 16:40, Henning Schild <henning.schild@siemens.com> wrote:
>
> It all looks like we want to revert the systemd-growfs patch and go
> back to using plain tools for each partition type. So i looked at this
> again and will likely propose another round, keeping the author but
> changing it quite a bit.
>
> Am Fri, 22 Oct 2021 15:50:47 -0400
> schrieb Joe MacDonald <joe_macdonald@mentor.com>:
>
> > resize2fs fails if the build sets the root filesystem for an image to
> > btrfs though the partition is expanded properly. Since the rest of the
> > script works as intended, simply checking the last partition type with
> > lsblk and adding `btrfs resize` instead of `resize2fs` in the
> > appropriate circumstance allows everything to function as expected.
>
> It it not about "rootfs" it is about the last partition.

This is the code you need to integrate btrfs filesystem

case $(lsblk -fno FSTYPE "${LAST_PART}") in
        ext4)   resize2fs "${LAST_PART}"
                ;;
        btrfs)  mkdir -p /tmp/btrfs
                mount "${LAST_PART}" /tmp/btrfs
                btrfs filesystem resize max /tmp/btrfs
                umount /tmp/btrfs && rmdir /tmp/btrfs
                ;;
esac

In attachment the patch against the current next branch.
It has been sent by elastic mail but went in moderation, as usual.

Best regards, R-