Arch Linux

Description:
Packman system update failed when /var/cache/pacman/pkg is a symlink to other location.

Additional info:
* package version(s): pacman 6.0.1-2

Steps to reproduce:
I have performed update of the system via command pacman -Syu
Durign the installation process I have got error like :

( 79/711) upgrading pacman-mirrorlist [######################################################################] 100%
warning: /etc/pacman.d/mirrorlist installed as /etc/pacman.d/mirrorlist.pacnew
error: could not open file /var/cache/pacman/pkg/pacman-6.0.1-2-armv7h.pkg.tar.xz: No such file or directory
error: could not commit transaction
error: failed to commit transaction (transaction aborted)
Errors occurred, no packages were upgraded.

That same problem on the x86_64. Problem not occured when I used bind in the fstab.

I the log we can see
[2021-09-24T14:51:57+0200] [ALPM] warning: /etc/pacman.d/mirrorlist installed as /etc/pacman.d/mirrorlist.pacnew
[2021-09-24T14:51:57+0200] [ALPM] upgraded pacman-mirrorlist (20210307-1 -> 20210918-1)
[2021-09-24T14:52:00+0200] [ALPM] transaction failed

I can see that during update of the pacman package scripts removed /var/cache/pacman/pkg symlink to the location on other partition.

I think pacman installation hooks should check location and if it's a symlink check target location before remove it. During system update pacman will cut off access to the packages.

best regards,