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Date:      Wed, 21 Aug 2019 11:56:09 +0200 (CEST)
From:      Ronald Klop <ronald-lists@klop.ws>
To:        Ricky Zhang <zhangchaowang@gmail.com>
Cc:        freebsd-arm@freebsd.org
Subject:   Re: How to change rootfs from official RPI3 image
Message-ID:  <1668312327.7.1566381369480@localhost>
In-Reply-To: <0FC8815E-58D7-4196-BF7E-0D6B127B314D@gmail.com>
References:  <0FC8815E-58D7-4196-BF7E-0D6B127B314D@gmail.com>

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Sorry, I did only reply to the mailinglist. I will use reply-all now.

You are right about uboot finding /boot/kernel and /boot/loader.conf.

What you need to do is mount the SD-card on /bootdir; in fstab:
/dev/yoursdcard /bootdir ufs rw,noatime 1 2

And a symlink from /boot -> /bootdir/boot on your SSD.

Then installworld/installkernel will do the proper thing.
So the complete /boot stays on the SD-card.

Regards,

Ronald.

=20
Van: Ricky Zhang <zhangchaowang@gmail.com>
Datum: woensdag, 21 augustus 2019 04:58
Aan: freebsd-arm@freebsd.org
Onderwerp: Re: How to change rootfs from official RPI3 image
>=20
> > BTW: Yes, u-boot is opensource: /usr/ports/sysutils/u-boot-rpi3
> > There are sysutils/u-boot-* ports for different system. With sysutils/u=
-boot-master as the main part of it.
> >
> > https://www.freshports.org/sysutils/u-boot-rpi3 <https://www.freshports=
.org/sysutils/u-boot-rpi3>
> > http://www.denx.de/wiki/U-Boot <http://www.denx.de/wiki/U-Boot>;
> >
> > Regards,
> > Ronald.
>=20
>=20
> Hi Ronald,
>=20
> Sorry, if I messed up the mailing list thread. I didn=E2=80=99t receive y=
our email directly. Instead, I got your reply from daily digest. I have to =
copy subject and quote your reply manually in my email client. I have no id=
ea how to fix it after reading all FAQ (https://www.freebsd.org/doc/en_US.I=
SO8859-1/articles/mailing-list-faq/article.html#etiquette <https://www.free=
bsd.org/doc/en_US.ISO8859-1/articles/mailing-list-faq/article.html#etiquett=
e>). Any other mailing list I subscribed didn=E2=80=99t work this way...
>=20
> In any case, the magic works. I did rsync:
>=20
> rsync -aAXvr --progress --delete /* /mnt/USB \
>     --exclude=3D'/boot/msdos/*' \
>     --exclude=3D'/dev/*' \
>     --exclude=3D'/proc/*' \
>     --exclude=3D'/net/*' \
>     --exclude=3D'/tmp/*' \
>     --exclude=3D'/mnt/*' \
>     --exclude=3D'/media/*'
>=20
> I confirmed that it mount ssd as rootfs:
>=20
> Ricky@router ~ $ df -h
> Filesystem                  Size    Used   Avail Capacity  Mounted on
> /dev/label/gpt/ssdrootfs    407G    5.5G    369G     1%    /
> devfs                       1.0K    1.0K      0B   100%    /dev
> /dev/msdosfs/MSDOSBOOT       50M     13M     37M    26%    /boot/msdos
> tmpfs                        50M    4.0K     50M     0%    /tmp
>=20
> As you said, kernel still comes from SD card. I don=E2=80=99t fully under=
stand the FreeBSD boot process. Neither am I familiar with UEFI.
>=20
> - I guess /boot/msdos/uboot.bin finds the SD card roofs system. Load the =
kernel from /boot/kernel in SD card and scan /boot/loader.conf to find the =
rootfs. Please correct me if I=E2=80=99m wrong.
> - Should I remove /boot folder from SSD to avoid confusion?
> - Are there any guide how to compile and deploy kernel?
>=20
>=20
>=20
>=20
> _______________________________________________
> freebsd-arm@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-arm
> To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org"
>=20
>=20
>=20
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Subject: Re: How to change rootfs from official RPI3 image
From: Ricky Zhang <zhangchaowang@gmail.com>
X-Priority: 3 (Normal)
In-Reply-To: <1668312327.7.1566381369480@localhost>
Date: Wed, 21 Aug 2019 07:16:11 -0400
Cc: freebsd-arm@freebsd.org
Message-Id: <C5D66D8B-05F2-445A-92A5-CD463B393EEA@gmail.com>
References: <0FC8815E-58D7-4196-BF7E-0D6B127B314D@gmail.com>
 <1668312327.7.1566381369480@localhost>
To: Ronald Klop <ronald-lists@klop.ws>
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Your idea is brilliant. It solved the dilemma.=20

Ricky@router ~ $ sudo cat /etc/fstab
# Custom /etc/fstab for FreeBSD embedded images
/dev/ufs/rootfs   /bootdir       ufs     rw      1       1
/dev/label/gpt/ssdrootfs   /       ufs     rw      1       1
/dev/msdosfs/MSDOSBOOT /boot/msdos msdosfs rw,noatime 0 0
tmpfs /tmp tmpfs rw,mode=3D1777,size=3D50m 0 0

Ricky@router ~ $ mount
/dev/label/gpt/ssdrootfs on / (ufs, local, soft-updates)
devfs on /dev (devfs, local, multilabel)
/dev/ufs/rootfs on /bootdir (ufs, local, soft-updates)
/dev/msdosfs/MSDOSBOOT on /bootdir/boot/msdos (msdosfs, local, noatime)
tmpfs on /tmp (tmpfs, local)

I wrote the whole thing down in my wiki: =
https://github.com/rickyzhang82/FreeBSDWiki/wiki/1.-Migrate-SD-card-rootfs=
-to-SSD-for-RPI3 =
<https://github.com/rickyzhang82/FreeBSDWiki/wiki/1.-Migrate-SD-card-rootf=
s-to-SSD-for-RPI3>

Thanks

Ricky

> On Aug 21, 2019, at 5:56 AM, Ronald Klop <ronald-lists@klop.ws> wrote:
>=20
> Sorry, I did only reply to the mailinglist. I will use reply-all now.
>=20
> You are right about uboot finding /boot/kernel and /boot/loader.conf.
>=20
> What you need to do is mount the SD-card on /bootdir; in fstab:
> /dev/yoursdcard /bootdir ufs rw,noatime 1 2
>=20
> And a symlink from /boot -> /bootdir/boot on your SSD.
>=20
> Then installworld/installkernel will do the proper thing.
> So the complete /boot stays on the SD-card.
>=20
> Regards,
>=20
> Ronald.
>=20
> Van: Ricky Zhang <zhangchaowang@gmail.com>
> Datum: woensdag, 21 augustus 2019 04:58
> Aan: freebsd-arm@freebsd.org
> Onderwerp: Re: How to change rootfs from official RPI3 image
>=20
> > BTW: Yes, u-boot is opensource: /usr/ports/sysutils/u-boot-rpi3
> > There are sysutils/u-boot-* ports for different system. With =
sysutils/u-boot-master as the main part of it.
> >
> > https://www.freshports.org/sysutils/u-boot-rpi3 =
<https://www.freshports.org/sysutils/u-boot-rpi3>; =
<https://www.freshports.org/sysutils/u-boot-rpi3 =
<https://www.freshports.org/sysutils/u-boot-rpi3>>;
> > http://www.denx.de/wiki/U-Boot <http://www.denx.de/wiki/U-Boot>; =
<http://www.denx.de/wiki/U-Boot <http://www.denx.de/wiki/U-Boot>>;
> >
> > Regards,
> > Ronald.
>=20
>=20
> Hi Ronald,
>=20
> Sorry, if I messed up the mailing list thread. I didn=E2=80=99t =
receive your email directly. Instead, I got your reply from daily =
digest. I have to copy subject and quote your reply manually in my email =
client. I have no idea how to fix it after reading all FAQ =
(https://www.freebsd.org/doc/en_US.ISO8859-1/articles/mailing-list-faq/art=
icle.html#etiquette =
<https://www.freebsd.org/doc/en_US.ISO8859-1/articles/mailing-list-faq/art=
icle.html#etiquette> =
<https://www.freebsd.org/doc/en_US.ISO8859-1/articles/mailing-list-faq/art=
icle.html#etiquette =
<https://www.freebsd.org/doc/en_US.ISO8859-1/articles/mailing-list-faq/art=
icle.html#etiquette>>). Any other mailing list I subscribed didn=E2=80=99t=
 work this way...
>=20
> In any case, the magic works. I did rsync:
>=20
> rsync -aAXvr --progress --delete /* /mnt/USB \
>     --exclude=3D'/boot/msdos/*' \
>     --exclude=3D'/dev/*' \
>     --exclude=3D'/proc/*' \
>     --exclude=3D'/net/*' \
>     --exclude=3D'/tmp/*' \
>     --exclude=3D'/mnt/*' \
>     --exclude=3D'/media/*'
>=20
> I confirmed that it mount ssd as rootfs:
>=20
> Ricky@router ~ $ df -h
> Filesystem                  Size    Used   Avail Capacity  Mounted on
> /dev/label/gpt/ssdrootfs    407G    5.5G    369G     1%    /
> devfs                       1.0K    1.0K      0B   100%    /dev
> /dev/msdosfs/MSDOSBOOT       50M     13M     37M    26%    /boot/msdos
> tmpfs                        50M    4.0K     50M     0%    /tmp
>=20
> As you said, kernel still comes from SD card. I don=E2=80=99t fully =
understand the FreeBSD boot process. Neither am I familiar with UEFI.
>=20
> - I guess /boot/msdos/uboot.bin finds the SD card roofs system. Load =
the kernel from /boot/kernel in SD card and scan /boot/loader.conf to =
find the rootfs. Please correct me if I=E2=80=99m wrong.
> - Should I remove /boot folder from SSD to avoid confusion?
> - Are there any guide how to compile and deploy kernel?
>=20
>=20
>=20
>=20
> _______________________________________________
> freebsd-arm@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-arm =
<https://lists.freebsd.org/mailman/listinfo/freebsd-arm>;
> To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org"




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