From d87ec89887eede3589688c451fa43e50b5fcb24c Mon Sep 17 00:00:00 2001
From: Jake Howard <git@theorangeone.net>
Date: Sat, 9 Jan 2021 22:25:29 +0000
Subject: [PATCH] Persist arc size

Modprobe only loads the module, it doesn't ensure the ARC value persists correctly.
---
 ansible/roles/zfs/files/zfs-modprobe.conf |  1 +
 ansible/roles/zfs/tasks/main.yml          | 11 ++++++-----
 2 files changed, 7 insertions(+), 5 deletions(-)
 create mode 100644 ansible/roles/zfs/files/zfs-modprobe.conf

diff --git a/ansible/roles/zfs/files/zfs-modprobe.conf b/ansible/roles/zfs/files/zfs-modprobe.conf
new file mode 100644
index 0000000..d40f2ed
--- /dev/null
+++ b/ansible/roles/zfs/files/zfs-modprobe.conf
@@ -0,0 +1 @@
+options zfs zfs_arc_max={{ zfs_arc_size }}
diff --git a/ansible/roles/zfs/tasks/main.yml b/ansible/roles/zfs/tasks/main.yml
index 635d425..f170ca3 100644
--- a/ansible/roles/zfs/tasks/main.yml
+++ b/ansible/roles/zfs/tasks/main.yml
@@ -1,8 +1,9 @@
-- name: Enable zfs module
-  modprobe:
-    name: zfs
-    state: present
-    params: zfs_arc_max={{ zfs_arc_size }}
+- name: Set module options
+  template:
+    src: files/zfs-modprobe.conf
+    dest: /etc/modprobe.d/zfs.conf
+    mode: "0644"
+  become: true
 
 - name: ZFS Scrub
   cron: