Arch Linux

Description:

I had symlinked /var/cache to another partition which is a RAID0 array instead of root partition which is a RAID1.

Upon pacman -Syu, after tzdata was updated, it tried to update filesystem but complained that it could not find /var/cache/pacman/pkg/filesystem-2018.8-1-x86_64.pkg.tar.xz and stopped the update.

In fact, now my symlink is gone. So is /[s]?bin /lib(64)? /usr/sbin, /var/mail, /var/run, /etc/arch-release, /etc/profile.d/locale.sh, /usr/lib/os-release, basically all the files that are part of filesystem package (https://www.archlinux.org/packages/core/x86_64/filesystem/files/ not grey) and were not manually edited.

Also, I cannot execute _any_ command:

Failed to execute process '/usr/bin/test'. Reason:
The file '/usr/bin/test' does not exist or could not be executed.
Failed to execute process '/usr/bin/ls'. Reason:
The file '/usr/bin/ls' does not exist or could not be executed.

However /usr/bin/ls seems to still be there.