Update restic script from services to volumes

playbooks/filesystem/yggdrasil/etc/systemd/system/restic-volume-data.service.j2

@@ -1,5 +1,5 @@
 [Unit]
-Description=Backup service data snapshots using restic
+Description=Backup volume snapshots using restic
 Documentation=man:restic(8)
 
 [Service]
@@ -8,4 +8,4 @@ Environment=TZ=UTC
 Environment=RESTIC_CACHE_DIR=/var/cache/restic
 Environment=RESTIC_PASSWORD_FILE=/etc/restic.password
 EnvironmentFile=/etc/scaleway.keys
-ExecStart=/usr/local/sbin/restic-service-data --root-dataset rpool/var/lib/{{ ansible_hostname }}/data --bucket-endpoint {{ scw_bucket_endpoint }}
+ExecStart=/usr/local/sbin/restic-volume-data --root-dataset rpool/var/lib/{{ ansible_hostname }}/data --bucket-endpoint {{ scw_bucket_endpoint }}

playbooks/filesystem/yggdrasil/etc/systemd/system/restic-volume-data.timer

@@ -1,5 +1,5 @@
 [Unit]
-Description=Daily restic backup
+Description=Daily restic volume backup
 Documentation=man:restic(8)
 
 [Timer]

playbooks/filesystem/yggdrasil/usr/local/sbin/restic-volume-data

@@ -5,17 +5,18 @@ import os
 import subprocess
 
 
-def get_service_datasets(root_dataset):
+def get_volume_datasets(root_dataset):
     zfs_list = subprocess.getoutput(
         f"zfs list -H -r {root_dataset} -o name,mountpoint"
     )
     zfs_list_lines = zfs_list.split('\n')
     zfs_list_lines_items = map(lambda l: l.split(), zfs_list_lines)
     return {
-        os.path.basename(dataset): {
+        os.path.relpath(dataset, root_dataset).replace("/", "---"): {
             "dataset": dataset,
             "mountpoint": mountpoint,
-        } for dataset, mountpoint in zfs_list_lines_items if dataset != root_dataset
+        } for dataset, mountpoint in zfs_list_lines_items if ((dataset != root_dataset) and
+                                                              os.path.ismount(mountpoint))
     }
 
 def get_last_daily_snapshot(dataset):
@@ -36,19 +37,20 @@ if __name__ == "__main__":
                         help="S3 bucket endpoint for the backups")
     args = parser.parse_args()
 
-    service_datasets = get_service_datasets(args.root_dataset)
-    for service, properties in service_datasets.items():
+    volume_datasets = get_volume_datasets(args.root_dataset)
+    for volume, properties in volume_datasets.items():
         properties["snapshot"] = get_last_daily_snapshot(properties["dataset"])
 
-    for service, properties in service_datasets.items():
+    for volume, properties in volume_datasets.items():
         mountpoint = properties["mountpoint"]
         snapshot = properties["snapshot"]
         backup_path = os.path.normpath(os.path.join("/", "mnt", os.path.relpath(mountpoint, "/")))
+        bucket_name = f"the-nine-worlds---{volume}"
         restic_cmd_base = "restic " \
-            f"--repo s3:https://{args.bucket_endpoint}/the-nine-worlds---{service} " \
+            f"--repo s3:https://{args.bucket_endpoint}/{bucket_name} " \
             "--option s3.storage-class=ONEZONE_IA"
 
-        print(f"Backing up {service} : {snapshot}", flush=True)
+        print(f"Backing up {bucket_name} : {snapshot}", flush=True)
 
         subprocess.run(f"zfs clone -o mountpoint={backup_path} {snapshot} rpool/restic",
                        shell=True, check=True)

playbooks/tasks/backups/02-restic-enable.yml

@@ -1,20 +1,20 @@
 - name: Install the restic backup script
   copy:
-    src: ./filesystem/{{ ansible_hostname }}/usr/local/sbin/restic-service-data
-    dest: /usr/local/sbin/restic-service-data
+    src: ./filesystem/{{ ansible_hostname }}/usr/local/sbin/restic-volume-data
+    dest: /usr/local/sbin/restic-volume-data
     mode: 0755
 
 - name: Install the restic backup service file
   template:
-    src: ./filesystem/{{ ansible_hostname }}/etc/systemd/system/restic-service-data.service.j2
-    dest: /etc/systemd/system/restic-service-data.service
+    src: ./filesystem/{{ ansible_hostname }}/etc/systemd/system/restic-volume-data.service.j2
+    dest: /etc/systemd/system/restic-volume-data.service
     mode: 0644
   register: systemd_restic_service_data_service_file
 
 - name: Install the restic backup timer file
   copy:
-    src: ./filesystem/{{ ansible_hostname }}/etc/systemd/system/restic-service-data.timer
-    dest: /etc/systemd/system/restic-service-data.timer
+    src: ./filesystem/{{ ansible_hostname }}/etc/systemd/system/restic-volume-data.timer
+    dest: /etc/systemd/system/restic-volume-data.timer
     mode: 0644
   register: systemd_restic_service_data_timer_file
 
@@ -27,6 +27,6 @@
 
 - name: Enable restic backup
   systemd:
-    name: restic-service-data.timer
+    name: restic-volume-data.timer
     enabled: yes
     state: started