Re: [PATCH v3 4/6] raspios: resize rootfs on first boot

[Uladzimir Bely <ubely@ilbers.de>]

In the email from суббота, 29 января 2022 г. 00:13:43 +03 user Henning Schild 
wrote:
> Hi,
> 
> why did you not use or extend recipes-support/expand-on-first-boot ?
> 
> Henning
> 
Hello.

I tried to follow the approach raspios uses. First boot expansion is done this 
way in official distribution, so I just ported this part.

But you are right, while we have our own implementation (I just forgot about 
it), it is worth using it.

I've just tried to revert this commit and enable `expand-on-first-boot` recipe 
in local.conf - and it seems to be working. After first boot `df` shows that 
2nd partition is expanded ant all free space is available.

Also, 'raspi-config' utility (that allows to expand partition manually) 
remains working. So, even if user doesn't enable this recipe, they still can 
do it via this utility.

So, it seems, we can remove this commit in favour of the existing recipe and 
it doesn't bring any problems.

By the way, `expand-on-first-boot` recipe looks like something that is not 
tested at all. None of machine uses it by default, and it's not included to 
local.conf. Probably, that's why I didn't recall it while porting RPi.

Why not enable it at least for RPi targets?

> Am Wed, 19 Jan 2022 07:59:00 +0100
> 
> schrieb Uladzimir Bely <ubely@ilbers.de>:
> > Initially, after rpi-sdimg is created, a quite small rootfs partition
> > is created. After boot, there is almost no free space.
> > 
> > This patch uses scripts (idea is taken from official raspbian distro)
> > that make rootfs partition expanded at first boot.
> > 
> > Signed-off-by: Uladzimir Bely <ubely@ilbers.de>
> > ---
> > 
> >  meta-isar/conf/distro/raspios-configscript.sh | 23
> > 
> > ++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-)
> > 
> > diff --git a/meta-isar/conf/distro/raspios-configscript.sh
> > b/meta-isar/conf/distro/raspios-configscript.sh index
> > 6120a379..9a7c43e6 100644 ---
> > a/meta-isar/conf/distro/raspios-configscript.sh +++
> > b/meta-isar/conf/distro/raspios-configscript.sh @@ -19,7 +19,7 @@ EOF
> > 
> >  cat > /boot/cmdline.txt << EOF
> >  console=${MACHINE_SERIAL},${BAUDRATE_TTY} console=tty1 \
> >  root=/dev/mmcblk0p2 rootfstype=ext4 fsck.repair=yes \
> > 
> > -rootwait quiet
> > +rootwait quiet init=/usr/lib/raspi-config/init_resize.sh
> > 
> >  EOF
> >  
> >  cat > /etc/fstab << EOF
> > 
> > @@ -27,3 +27,24 @@ proc            /proc           proc    defaults
> > 
> >        0       0 /dev/mmcblk0p1  /boot           vfat    defaults
> >      
> >      0       2 /dev/mmcblk0p2  /               ext4
> > 
> > defaults,noatime  0       1 EOF
> > +
> > +cat > /etc/init.d/resize2fs_once << EOF
> > +#!/bin/sh
> > +. /lib/lsb/init-functions
> > +case "\$1" in
> > +  start)
> > +    log_daemon_msg "Starting resize2fs_once"
> > +    ROOT_DEV=\$(findmnt / -o source -n) &&
> > +    resize2fs \$ROOT_DEV &&
> > +    update-rc.d resize2fs_once remove &&
> > +    rm /etc/init.d/resize2fs_once &&
> > +    log_end_msg \$?
> > +    ;;
> > +  *)
> > +    echo "Usage: \$0 start" >&2
> > +    exit 3
> > +    ;;
> > +esac
> > +EOF
> > +chmod +x /etc/init.d/resize2fs_once
> > +ln -s ../init.d/resize2fs_once /etc/rc3.d/S01resize2fs_once