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bug#37977: Mount options ignored for root file system
From: |
Ludovic Courtès |
Subject: |
bug#37977: Mount options ignored for root file system |
Date: |
Sun, 17 Nov 2019 11:43:39 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) |
Hi Guillaume,
Guillaume Le Vaillant <address@hidden> skribis:
> Guillaume Le Vaillant skribis:
>
>> The filesystem options declared for the root file system are apparently
>> ignored. This happens for a btrfs root filesystem on a LUKS volume.
>
> This also happens on a basic btrfs root file system (without LUKS).
>
> I tried adding "rootflags=defaults,autodefrag,compress=lzo" in kernel
> arguments, but it didn't have any effect.
[...]
> I saw that the 'start' function of 'root-file-system-service-type'
> doesn't do anything. Is it on purpose? Or could we make it remount the
> root filesystem?
By definition, when shepherd is started, the root file system is already
mounted; that’s why the ‘start’ method of the ‘root-file-system-service’
does nothing.
The root file system is mounted by ‘mount-root-file-system’ in
linux-boot.scm, and you’re right: it happily ignores any options in the
<file-system> object for “/”. :-)
A solution would be to have ‘boot-system’ take an additional
#:root-file-system-options parameter that it would pass down to
‘mount-root-file-system’, which would honor it.
Would you like to give it a try?
Thanks,
Ludo’.