Add support for restic_dump_compression_enabled

README.md

@@ -23,6 +23,7 @@ If you want to force the installation, overwrite the binary or update restic, yo
 - `restic_check`: run `restic check` as `ExecStartPre` if true (`false`)
 - `restic_default_folders`: a default list of folders that restic will backup (`/etc/`, `/root` and `/var/log`)
 - `restic_folders`: the list of folder you want to backup
+- `restic_dump_compression_enabled`: enable piping to pigz for database dumps
 
 Each folder has a `path` and an `exclude` property (which defaults to nothing). The `exclude` property is the literal argument passed to restic (exemple: `--exclude .cache --exclude .local`).
 

defaults/main.yml

@@ -13,6 +13,7 @@ restic_default_folders:
   - {path: '/root', exclude: '--exclude .cache --exclude .local'}
 restic_folders: []
 restic_databases: []
+restic_dump_compression_enabled: false
 restic_forget: true
 restic_forget_keep_within: 30d
 restic_prune: true

tasks/install.yml

@@ -8,6 +8,10 @@
   apt:
     name: bzip2
 
+- name: Install pigz (to compress db dumps)
+  apt:
+    name: pigz
+
 - name: Download restic
   get_url:
     url: 'https://github.com/restic/restic/releases/download/v{{ restic_version }}/restic_{{ restic_version }}_linux_amd64.bz2'

templates/restic-backup.service.j2

@@ -25,7 +25,7 @@ ExecStart={{ restic_path }} backup --verbose {{ folder.path }} {{ folder.exclude
 {% endfor -%}
 
 {% for database in restic_databases %}
-ExecStart=/bin/sh -c "{{ database.dump_command }} | {{ restic_path }} backup --verbose --stdin --stdin-filename {{ database.name }}.sql"
+ExecStart=/bin/sh -c "{{ database.dump_command }} {{ '| pigz |' if restic_dump_compression_enabled else '|' }} {{ restic_path }} backup --verbose --stdin --stdin-filename {{ database.name }}{{ '.sql.gz' if restic_dump_compression_enabled else '.sql' }}"
 {% endfor -%}
 
 {% if restic_forget %}