Remove mdadm/ext4 related tasks from Ansible

roles/install_arch/tasks/main.yml

@@ -31,22 +31,10 @@
   command: mkfs.btrfs -f -L root -d single -m single -O no-holes {{ system_disks[0] }}{{ 'p2' if 'nvme' in system_disks[0] else '2' }}
   when: filesystem == "btrfs" and system_disks|length == 1
 
-- name: create MDADM array
-  command: mdadm --create --level=1 --raid-devices=2 --run /dev/md0 {{ system_disks | map('regex_replace', '^(.*)$', '\g<1>p2' if 'nvme' in system_disks[0] else '\g<1>2') | join(' ') }}
-  when: filesystem != "btrfs" and system_disks|length == 2
-
-- name: format the MDADM array
-  filesystem: dev=/dev/md0 fstype={{ filesystem|default('ext4') }}
-  when: filesystem != "btrfs" and system_disks|length == 2
-
 - name: mount the filesystem (btrfs)
   mount: src="{{ system_disks[0] }}{{ 'p2' if 'nvme' in system_disks[0] else '2' }}" path=/mnt state=mounted fstype=btrfs opts="compress=zstd,space_cache=v2"
   when: filesystem == "btrfs"
 
-- name: mount the filesystem (ext4 RAID)
-  mount: name=/mnt src=/dev/md0 state=mounted fstype={{ filesystem|default('ext4') }}
-  when: filesystem != "btrfs" and system_disks|length == 2
-
 - name: touch LOCK file on mountpoint
   file: path=/mnt/LOCK state=touch
 
@@ -154,10 +142,6 @@
     fstype: none
     fstab: /dev/dummyfstab
 
-- name: generate mdadm.conf
-  shell: mdadm --detail --scan >> /mnt/etc/mdadm.conf
-  when: filesystem != "btrfs"
-
 - name: configure locale.gen
   lineinfile: dest=/mnt/etc/locale.gen line="en_US.UTF-8 UTF-8"
 
@@ -171,14 +155,6 @@
   register: chroot_systemd_firstboot
   changed_when: "chroot_systemd_firstboot.rc == 0"
 
-- name: add mdadm_udev to mkinitcpio.conf
-  lineinfile:
-    dest: /mnt/etc/mkinitcpio.conf
-    backrefs: yes
-    regexp: '^(.*)block filesystems(.*)$'
-    line: '\1block mdadm_udev filesystems\2'
-  when: filesystem != "btrfs"
-
 - name: run mkinitcpio
   command: chroot /mnt mkinitcpio -p linux
   register: chroot_mkinitcpio