From 4b7609791b66ad1a8d9a2aaf378c99970248d5f4 Mon Sep 17 00:00:00 2001
From: Darik Horn <dajhorn@vanadac.com>
Date: Fri, 25 Nov 2011 10:51:03 -0600
Subject: [PATCH] Split the cron file for anacron compatibilty.

Split the cron file so that the hourly, daily, weekly, and monthly
zfs automatic snapshots still happen even if the system is offline
temporarily during the scheduled event, such as during a reboot.

On Debian systems, if anacron is installed, then it is used to run
the /etc/cron.{hourly,daily,weekly,monthly} directories, but not
the /etc/cron.d directory. This means that /etc/cron.d jobs are not
run if the system is offline when crond would usually invoke them.
---
 Makefile                                               | 10 +++++++++-
 etc/zfs-auto-snapshot.cron.daily                       |  2 ++
 ...o-snapshot.cron => zfs-auto-snapshot.cron.frequent} |  0
 etc/zfs-auto-snapshot.cron.hourly                      |  2 ++
 etc/zfs-auto-snapshot.cron.monthly                     |  2 ++
 etc/zfs-auto-snapshot.cron.weekly                      |  2 ++
 6 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 etc/zfs-auto-snapshot.cron.daily
 rename etc/{zfs-auto-snapshot.cron => zfs-auto-snapshot.cron.frequent} (100%)
 create mode 100644 etc/zfs-auto-snapshot.cron.hourly
 create mode 100644 etc/zfs-auto-snapshot.cron.monthly
 create mode 100644 etc/zfs-auto-snapshot.cron.weekly

diff --git a/Makefile b/Makefile
index 30d73e8..ba36795 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,14 @@ all:
 
 install:
 	install -d $(DESTDIR)$(PREFIX)/etc/cron.d
-	install etc/zfs-auto-snapshot.cron $(DESTDIR)$(PREFIX)/etc/cron.d/zfs-auto-snapshot
+	install -d $(DESTDIR)$(PREFIX)/etc/cron.daily
+	install -d $(DESTDIR)$(PREFIX)/etc/cron.hourly
+	install -d $(DESTDIR)$(PREFIX)/etc/cron.weekly
+	install -d $(DESTDIR)$(PREFIX)/etc/cron.monthly
+	install etc/zfs-auto-snapshot.cron.frequent $(DESTDIR)$(PREFIX)/etc/cron.d/zfs-auto-snapshot
+	install etc/zfs-auto-snapshot.cron.hourly   $(DESTDIR)$(PREFIX)/etc/cron.daily/zfs-auto-snapshot
+	install etc/zfs-auto-snapshot.cron.daily    $(DESTDIR)$(PREFIX)/etc/cron.hourly/zfs-auto-snapshot
+	install etc/zfs-auto-snapshot.cron.weekly   $(DESTDIR)$(PREFIX)/etc/cron.weekly/zfs-auto-snapshot
+	install etc/zfs-auto-snapshot.cron.monthly  $(DESTDIR)$(PREFIX)/etc/cron.monthly/zfs-auto-snapshot
 	install -d $(DESTDIR)$(PREFIX)/sbin
 	install src/zfs-auto-snapshot.sh $(DESTDIR)$(PREFIX)/sbin/zfs-auto-snapshot
diff --git a/etc/zfs-auto-snapshot.cron.daily b/etc/zfs-auto-snapshot.cron.daily
new file mode 100644
index 0000000..fab4e7f
--- /dev/null
+++ b/etc/zfs-auto-snapshot.cron.daily
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec zfs-auto-snapshot --quiet --syslog --label=daily --keep=31 //
diff --git a/etc/zfs-auto-snapshot.cron b/etc/zfs-auto-snapshot.cron.frequent
similarity index 100%
rename from etc/zfs-auto-snapshot.cron
rename to etc/zfs-auto-snapshot.cron.frequent
diff --git a/etc/zfs-auto-snapshot.cron.hourly b/etc/zfs-auto-snapshot.cron.hourly
new file mode 100644
index 0000000..dc39e11
--- /dev/null
+++ b/etc/zfs-auto-snapshot.cron.hourly
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec zfs-auto-snapshot --quiet --syslog --label=hourly --keep=24 //
diff --git a/etc/zfs-auto-snapshot.cron.monthly b/etc/zfs-auto-snapshot.cron.monthly
new file mode 100644
index 0000000..27e2ead
--- /dev/null
+++ b/etc/zfs-auto-snapshot.cron.monthly
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec zfs-auto-snapshot --quiet --syslog --label=monthly --keep=12 //
diff --git a/etc/zfs-auto-snapshot.cron.weekly b/etc/zfs-auto-snapshot.cron.weekly
new file mode 100644
index 0000000..77e5a15
--- /dev/null
+++ b/etc/zfs-auto-snapshot.cron.weekly
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec zfs-auto-snapshot --quiet --syslog --label=weekly --keep=4 //