[arch-general] pacman's NoUpgrade option does not ignore read-only files

[Marcel Menzel]

Am 25.01.2021 um 19:12 schrieb Marcel Menzel via arch-general:
> Hello list,
>
> I can't get pacman to ignore read-only files via the the NoUpgrade
> and/or the NoExtract config options.
>
> I have several Arch Linux LXC (managed via LXD) containers, with several
> read-only files mapped into those containers for convenience. For
> example, to have a single resolv.conf for all containers, I configured
> the following in LXD:
>
> devices:
>   resolv_conf:
>     path: /etc/resolv.conf
>     readonly: "true"
>     source: /root/containerfiles/resolv.conf
>     type: disk
>
> Now the problem is, when I want to run upgrades in containers, the
> pacman check for disk space fails with:
>
> error: Partition /etc/resolv.conf is mounted read only
>
> According to man pacman.conf, setting "etc/resolv.conf" in NoUpgrade
> should *in theory* get around this problem for my understandings, but it
> somehow doesn't. Also setting both does not work:
>
> NoUpgrade   = etc/resolv.conf
> NoExtract   = etc/resolv.conf
>
> Am I missing something out here? Is there any way to accomplish what I
> want or do I really have to work with a pacman hook here which copies
> the read only mounted file to the original place after a package upgrade?
>
> Thanks & kind regards,
>
> Marcel Menzel

Following up: Commenting out "CheckSpace" in pacman.conf will lead to
the desired behavior. Is this considered worth reporting as a bug in the
bugtracker?