btrfs-mksnapshot: add apt configuration snippet

diff --git a/btrfs/mksnapshot/06btrfs-mksnapshot b/btrfs/mksnapshot/06btrfs-mksnapshot
new file mode 100644 (file)
index 0000000..182570e
--- /dev/null
+++ b/btrfs/mksnapshot/06btrfs-mksnapshot
@@ -0,0 +1 @@
+DPkg::Pre-Invoke { "if [ -x /usr/local/sbin/btrfs-mksnapshot ]; then /usr/local/sbin/btrfs-mksnapshot -1 /; fi"; };