Add ZFS periodic scripts that monitors status of ZFS pools.

Submitted by:	des

etc/defaults/periodic.conf

@@ -88,6 +88,9 @@ daily_news_expire_enable="YES"				# Run news.expire
 daily_status_disks_enable="YES"				# Check disk status
 daily_status_disks_df_flags="-l -h"		# df(1) flags for check
 
+# 404.status-zfs
+daily_status_zfs_enable="NO"				# Check ZFS
+
 # 405.status-ata_raid
 daily_status_ata_raid_enable="NO"			# Check ATA raid status
 

etc/periodic/daily/404.status-zfs

@@ -0,0 +1,36 @@
+#!/bin/sh
+#
+# $FreeBSD$
+#
+
+# If there is a global system configuration file, suck it in.
+#
+if [ -r /etc/defaults/periodic.conf ]
+then
+    . /etc/defaults/periodic.conf
+    source_periodic_confs
+fi
+
+case "$daily_status_zfs_enable" in
+    [Yy][Ee][Ss])
+	echo
+	echo 'Checking status of zfs pools:'
+
+	out=`zpool status -x`
+	echo "$out"
+	# zpool status -x always exits with 0, so we have to interpret its
+	# output to see what's going on.
+	if [ "$out" = "all pools are healthy" \
+	    -o "$out" = "no pools available" ]; then
+		rc=0
+	else
+		rc=1
+	fi
+	;;
+
+    *)
+	rc=0
+	;;
+esac
+
+exit $rc

etc/periodic/daily/Makefile

@@ -12,6 +12,7 @@ FILES=	100.clean-disks \
 	310.accounting \
 	330.news \
 	400.status-disks \
+	404.status-zfs \
 	405.status-ata-raid \
 	406.status-gmirror \
 	407.status-graid3 \