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alpine-user

Re: [alpine-user] Squashfs root filesystem

From: PICCORO McKAY Lenz <mckaygerhard_at_gmail.com>
Date: Fri, 7 Jun 2019 10:37:41 -0400

gr4eat, thanks for the hints

El vie., 7 de jun. de 2019 a la(s) 10:27, Paul Zillmann (p.zillmann_at_h6g.de)
escribió:

> Hello Lars-Erik,
>
> Am 07.06.19 um 12:40 schrieb Lars-Erik Helander:
> > Is it possible to configure boot to run alpine using a read-only mounted
> squashfs file?
>
> Yes it is, supposing the Kernel and initramfs are not part of the
> squashfs file.
> Take a look at [1] if the Kernel arguments work for you.
>
> Otherwise you can modify the init script here:
> - mount the fs where the squashfs lies
> - mount the squashfs
> - mount a tmpfs
> - mount an overlayfs as the new root, lower dir would be squashfs,
> upper dir is the tmpfs
> The scipt is located at /usr/share/mkinitfs/initramfs-init
> Important parts at this section is "nlplug-findfs" and "exec
> /bin/busybox switch_root" to exit the initramfs into the bootet system.
> (You can replace the code in lines 479-490 as present in the linked
> repository)
>
> Don't forget do add the squashfs and overlayfs Kernel modules into the
> initramfs, then regenerate the initramfs.
>
> You should also take a look into the Alpine Netboot which uses modloop
> instead of squashfs.
>
> 1: https://git.alpinelinux.org/mkinitfs/tree/initramfs-init.in#n455
>
> - Paul
>
> >
> > The mkinit code seems to include some squashfs support, but I can not
> figure if that could be used for my purpose.
> >
> > /Lars
> >
> > Skickat från min iPhone
> >
> >
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Received on Fri Jun 07 2019 - 10:37:41 UTC