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Bug#985463: debian-installer: kernel complains about /boot partition in LVM install (ext2 filesystem being mounted at /boot supports timestamps until 2038)



Control: clone -1 -2
Control: reassign -1 partman-auto
Control: retitle -1 partman-auto: Use ext4 filesystem for /boot if boot loader supports it
Control: reassign -2 release-notes
Control: retitle -2 release-notes: Recommend converting /boot from ext2 to ext4 if possible
Control: tag -2 bullseye

On Thu, 2021-03-18 at 17:10 +0100, Laurent Bonnaud wrote:
> Package: debian-installer
> Severity: normal
> 
> 
> Dear Maintainers,
> 
> I did a test installation using debian-testing-amd64-netinst.iso from
> 2021-03-15 (Debian bullseye/11), chose the LVM option,
> and noticed that once the system is installed and boots, the kernel
> complains with this message:
> 
>    ext2 filesystem being mounted at /boot supports timestamps until
> 2038 (0x7fffffff)
> 
> This is not fatal, but is ugly and most people would prefer a system
> without this message.
> 
> The problem comes from the fact that the boot partition is created as
> ext2 with 128 bytes inodes.

I think that the installer uses ext2 for /boot because some boot
loaders only support(ed) ext2 and not its successor filesystem formats.
But I think that's an historical problem for most release
architectures.

> One fix would be to create the /boot filesystem as ext4 with 256
> bytes inodes.

On architectures where we install GRUB by default, I think this would
be a sensible change.

> The same problem exists in the Debian buster installer and will show
> up when buster systems are upgraded to a 5.10 kernel.

Since we don't have a specific upgrade program, I think the best we can
do about this is to document it in the release notes.

Ben.

-- 
Ben Hutchings
73.46% of all statistics are made up.

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