Add sanoid Ansible role for ZFS snapshots and replication

Replaces manually deployed config files with a fully idempotent role:
installs sanoid, templates sanoid.conf and syncoid service/timer from
variables, enables both systemd timers. Removes static proxmox/sanoid.*
files. README rebuild section updated accordingly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -173,19 +173,7 @@ ansible-playbook playbooks/claude-code-vm.yml
 
 ### 6. Set up sanoid/syncoid for ZFS snapshots
 
-Sanoid and syncoid are not yet in an Ansible role — deploy manually:
-
-```bash
-apt install sanoid
-
-# Copy config from repo
-cp proxmox/sanoid.conf /etc/sanoid/sanoid.conf
-cp proxmox/syncoid.service /etc/systemd/system/syncoid.service
-cp proxmox/syncoid.timer /etc/systemd/system/syncoid.timer
-
-systemctl enable --now sanoid.timer
-systemctl enable --now syncoid.timer
-```
+Handled automatically by `playbooks/host.yml` (the `sanoid` role). No manual steps needed.
 
 ### 7. Restore Grafana password
 

ansible/playbooks/host.yml

@@ -11,3 +11,4 @@
   hosts: proxmox_hosts
   roles:
     - proxmox_host
+    - sanoid

ansible/roles/sanoid/defaults/main.yml

@@ -0,0 +1,37 @@
+---
+sanoid_datasets:
+  - dataset: rpool/data
+    template: vms
+    recursive: true
+  - dataset: rpool/ROOT
+    template: system
+    recursive: true
+
+sanoid_templates:
+  vms:
+    daily: 7
+    weekly: 4
+    monthly: 0
+    hourly: 0
+    frequently: 0
+    autosnap: true
+    autoprune: true
+  system:
+    daily: 3
+    weekly: 2
+    monthly: 0
+    hourly: 0
+    frequently: 0
+    autosnap: true
+    autoprune: true
+
+syncoid_jobs:
+  - src: rpool/data
+    dst: hdd/backups/rpool-data
+    recursive: true
+  - src: rpool/ROOT/pve-1
+    dst: hdd/backups/pve-root
+    recursive: false
+
+syncoid_schedule: "*-*-* 02:00:00"
+syncoid_randomized_delay: 10min

ansible/roles/sanoid/handlers/main.yml

@@ -0,0 +1,12 @@
+---
+- name: Restart sanoid timer
+  ansible.builtin.systemd:
+    name: sanoid.timer
+    state: restarted
+    daemon_reload: true
+
+- name: Restart syncoid timer
+  ansible.builtin.systemd:
+    name: syncoid.timer
+    state: restarted
+    daemon_reload: true

ansible/roles/sanoid/tasks/main.yml

@@ -0,0 +1,47 @@
+---
+- name: Install sanoid
+  ansible.builtin.apt:
+    name: sanoid
+    state: present
+    update_cache: true
+
+- name: Deploy sanoid.conf
+  ansible.builtin.template:
+    src: sanoid.conf.j2
+    dest: /etc/sanoid/sanoid.conf
+    owner: root
+    group: root
+    mode: '0644'
+  notify: Restart sanoid timer
+
+- name: Deploy syncoid systemd service
+  ansible.builtin.template:
+    src: syncoid.service.j2
+    dest: /etc/systemd/system/syncoid.service
+    owner: root
+    group: root
+    mode: '0644'
+  notify: Restart syncoid timer
+
+- name: Deploy syncoid systemd timer
+  ansible.builtin.template:
+    src: syncoid.timer.j2
+    dest: /etc/systemd/system/syncoid.timer
+    owner: root
+    group: root
+    mode: '0644'
+  notify: Restart syncoid timer
+
+- name: Enable and start sanoid timer
+  ansible.builtin.systemd:
+    name: sanoid.timer
+    enabled: true
+    state: started
+    daemon_reload: true
+
+- name: Enable and start syncoid timer
+  ansible.builtin.systemd:
+    name: syncoid.timer
+    enabled: true
+    state: started
+    daemon_reload: true

ansible/roles/sanoid/templates/sanoid.conf.j2

@@ -0,0 +1,19 @@
+{% for entry in sanoid_datasets %}
+[{{ entry.dataset }}]
+    use_template = {{ entry.template }}
+{% if entry.recursive %}
+    recursive = yes
+{% endif %}
+
+{% endfor %}
+{% for name, t in sanoid_templates.items() %}
+[template_{{ name }}]
+    daily = {{ t.daily }}
+    weekly = {{ t.weekly }}
+    monthly = {{ t.monthly }}
+    hourly = {{ t.hourly }}
+    frequently = {{ t.frequently }}
+    autosnap = {{ 'yes' if t.autosnap else 'no' }}
+    autoprune = {{ 'yes' if t.autoprune else 'no' }}
+
+{% endfor %}

ansible/roles/sanoid/templates/syncoid.service.j2

@@ -0,0 +1,9 @@
+[Unit]
+Description=Syncoid ZFS replication to HDD
+After=zfs.target
+
+[Service]
+Type=oneshot
+{% for job in syncoid_jobs %}
+ExecStart=/usr/sbin/syncoid --no-privilege-elevation{% if job.recursive %} --recursive{% endif %} {{ job.src }} {{ job.dst }}
+{% endfor %}

ansible/roles/sanoid/templates/syncoid.timer.j2

@@ -3,8 +3,8 @@ Description=Daily ZFS replication to HDD
 After=sanoid.timer
 
 [Timer]
-OnCalendar=*-*-* 02:00:00
-RandomizedDelaySec=10min
+OnCalendar={{ syncoid_schedule }}
+RandomizedDelaySec={{ syncoid_randomized_delay }}
 Persistent=true
 
 [Install]

proxmox/sanoid.conf

@@ -1,28 +0,0 @@
-# VM disks on SSD pool — snapshot daily/weekly
-[rpool/data]
-    use_template = vms
-    recursive = yes
-
-# Proxmox OS root — lighter schedule, mainly for recovery
-[rpool/ROOT]
-    use_template = system
-    recursive = yes
-
-#############################
-[template_vms]
-    daily = 7
-    weekly = 4
-    monthly = 0
-    hourly = 0
-    frequently = 0
-    autosnap = yes
-    autoprune = yes
-
-[template_system]
-    daily = 3
-    weekly = 2
-    monthly = 0
-    hourly = 0
-    frequently = 0
-    autosnap = yes
-    autoprune = yes

proxmox/syncoid.service

@@ -1,8 +0,0 @@
-[Unit]
-Description=Syncoid ZFS replication to HDD
-After=zfs.target
-
-[Service]
-Type=oneshot
-ExecStart=/usr/sbin/syncoid --recursive --no-privilege-elevation rpool/data hdd/backups/rpool-data
-ExecStart=/usr/sbin/syncoid --no-privilege-elevation rpool/ROOT/pve-1 hdd/backups/pve-root