Only scrub when plugged in on Linux, and TCP optimization.

ansible/roles/zfs/tasks/linux.yaml

@@ -61,3 +61,26 @@
     name: "zfs-scrub-weekly@{{ item }}.timer"
     daemon_reload: yes
   loop: "{{ periodic_scrub_pools }}"
+
+- name: Create directories
+  when: periodic_scrub_pools is defined
+  file:
+    name: "{{ item }}"
+    state: directory
+    mode: 0755
+    owner: root
+    group: wheel # Normally it is "root"
+  loop:
+    - /etc/systemd/system/zfs-scrub-weekly@.timer.d
+
+- name: Install Configuration
+  when: periodic_scrub_pools is defined
+  copy:
+    src: "files/{{ item.src }}"
+    dest: "{{ item.dest }}"
+    mode: 0644
+    owner: root
+    group: wheel # Normally it is "root"
+  loop:
+    - src: linux_scrub_when_plugged_in.conf
+      dest: /etc/systemd/system/zfs-scrub-weekly@.timer.d/override.conf