Prune VM backups after every run

site-cookbooks/kosmos_kvm/files/prune_vm_backups.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+# GENERATED BY CHEF
+# DO NOT EDIT
+set -e
+
+echo "Pruning backups of VM: $1"
+
+borg prune --prefix $1 \
+           --keep-hourly 4 --keep-daily 4 --keep-weekly 1 \
+           --keep-monthly 1 --keep-yearly 1 \
+           --stats $BORG_REPO

site-cookbooks/kosmos_kvm/recipes/backup.rb

@@ -45,6 +45,11 @@ cookbook_file "/root/backups/backup_vm.sh" do
   mode "0750"
 end
 
+cookbook_file "/root/backups/prune_vm_backups.sh" do
+  source "prune_vm_backups.sh"
+  mode "0750"
+end
+
 # Search all guests and filter by presence on current host
 vm_domains = search(:node, "role:kvm_guest").map{|n| n["hostname"] } \
              & `virsh list --name`.strip.chomp.split("\n")

site-cookbooks/kosmos_kvm/templates/backup_all_vms.sh.erb

@@ -8,4 +8,7 @@ echo "Backing up all VMs with kvm_guest chef role..."
 for domain in <%= @vm_domains.join(" ") %>
 do
   /root/backups/backup_vm.sh $domain
+  /root/backups/prune_vm_backups.sh $domain
+  # TODO Enable this when upgrading borg to 1.2
+  # borg compact $BORG_REPO
 done