From ebbd2a4015af3910a223d5aa6995680ddd64c9cb Mon Sep 17 00:00:00 2001
From: Jake Howard <git@theorangeone.net>
Date: Sun, 26 Jul 2020 18:03:09 +0100
Subject: [PATCH] Install zfs and sanoid

---
 ansible/main.yml                    |  1 +
 ansible/roles/zfs/files/sanoid.conf | 21 +++++++++++++++++++++
 ansible/roles/zfs/tasks/main.yml    | 12 ++++++++++++
 ansible/roles/zfs/tasks/sanoid.yml  | 16 ++++++++++++++++
 4 files changed, 50 insertions(+)
 create mode 100644 ansible/roles/zfs/files/sanoid.conf
 create mode 100644 ansible/roles/zfs/tasks/main.yml
 create mode 100644 ansible/roles/zfs/tasks/sanoid.yml

diff --git a/ansible/main.yml b/ansible/main.yml
index c356e79..d988499 100644
--- a/ansible/main.yml
+++ b/ansible/main.yml
@@ -49,3 +49,4 @@
     - contessa
     - statping
     - upload
+    - zfs
diff --git a/ansible/roles/zfs/files/sanoid.conf b/ansible/roles/zfs/files/sanoid.conf
new file mode 100644
index 0000000..ee92b78
--- /dev/null
+++ b/ansible/roles/zfs/files/sanoid.conf
@@ -0,0 +1,21 @@
+######################################
+# This is a sample sanoid.conf file. #
+# It should go in /etc/sanoid.       #
+######################################
+
+[tank]
+    use_template = production
+    recursive = yes
+
+#############################
+# templates below this line #
+#############################
+
+[template_production]
+    frequently = 0
+    hourly = 36
+    daily = 30
+    monthly = 3
+    yearly = 0
+    autosnap = yes
+    autoprune = yes
diff --git a/ansible/roles/zfs/tasks/main.yml b/ansible/roles/zfs/tasks/main.yml
new file mode 100644
index 0000000..17a7508
--- /dev/null
+++ b/ansible/roles/zfs/tasks/main.yml
@@ -0,0 +1,12 @@
+- name: Calculate ZFS ARC size
+  set_fact:
+    zfs_arc_size: "{{ (ansible_memtotal_mb * 1024 * 1024) * 0.15 }}"
+
+- name: Enable zfs module
+  modprobe:
+    name: zfs
+    state: present
+    params: 'zfs_arc_max={{ zfs_arc_size }}'
+
+- name: Sanoid
+  include: sanoid.yml
diff --git a/ansible/roles/zfs/tasks/sanoid.yml b/ansible/roles/zfs/tasks/sanoid.yml
new file mode 100644
index 0000000..ff00626
--- /dev/null
+++ b/ansible/roles/zfs/tasks/sanoid.yml
@@ -0,0 +1,16 @@
+- name: Install Sanoid
+  package:
+    name: sanoid
+  become: true
+
+- name: Sanoid config
+  template:
+    src: files/sanoid.conf
+    dest: /etc/sanoid/sanoid.conf
+  become: true
+
+- name: Install sanoid cron job
+  cron:
+    name: sanoid
+    special_time: hourly
+    job: TZ=UTC sanoid