Index: stable/11/etc/periodic/daily/800.scrub-zfs
===================================================================
--- stable/11/etc/periodic/daily/800.scrub-zfs	(revision 342646)
+++ stable/11/etc/periodic/daily/800.scrub-zfs	(revision 342647)
@@ -1,110 +1,110 @@
 #!/bin/sh
 #
 # $FreeBSD$
 #
 
 # If there is a global system configuration file, suck it in.
 #
 
 newline="
 " # A single newline
 
 if [ -r /etc/defaults/periodic.conf ]
 then
     . /etc/defaults/periodic.conf
     source_periodic_confs
 fi
 
 : ${daily_scrub_zfs_default_threshold=35}
 
 case "$daily_scrub_zfs_enable" in
     [Yy][Ee][Ss])
 	echo
 	echo 'Scrubbing of zfs pools:'
 
 	if [ -z "${daily_scrub_zfs_pools}" ]; then
 		daily_scrub_zfs_pools="$(zpool list -H -o name)"
 	fi
 
 	rc=0
 	for pool in ${daily_scrub_zfs_pools}; do
 		# sanity check
 		_status=$(zpool list "${pool}" 2> /dev/null)
 		if [ $? -ne 0 ]; then
 			rc=2
 			echo "   WARNING: pool '${pool}' specified in"
 			echo "            '/etc/periodic.conf:daily_scrub_zfs_pools'"
 			echo "            does not exist"
 			continue
 		fi
 		_status=${_status##*$newline}
 		case ${_status} in
 		*FAULTED*)
 			rc=3
 			echo "Skipping faulted pool: ${pool}"
 			continue ;;
 		*UNAVAIL*)
 			rc=4
 			echo "Skipping unavailable pool: ${pool}"
 			continue ;;
 		esac
 
 		# determine how many days shall be between scrubs
 		eval _pool_threshold=\${daily_scrub_zfs_$(echo "${pool}"|tr  ".:-" "_")_threshold}
 		if [ -z "${_pool_threshold}" ];then
 			_pool_threshold=${daily_scrub_zfs_default_threshold}
 		fi
 
 		_last_scrub=$(zpool history ${pool} | \
 		    egrep "^[0-9\.\:\-]{19} zpool scrub ${pool}\$" | tail -1 |\
 		    cut -d ' ' -f 1)
 		if [ -z "${_last_scrub}" ]; then
 			# creation time of the pool if no scrub was done
 			_last_scrub=$(zpool history ${pool} | \
 			    sed -ne '2s/ .*$//p')
 		fi
 		if [ -z "${_last_scrub}" ]; then
 			echo "   skipping scrubbing of pool '${pool}':"
 			echo "      can't get last scrubbing date"
 			continue
 		fi
 
 		# Now minus last scrub (both in seconds) converted to days.
 		_scrub_diff=$(expr -e \( $(date +%s) - \
-		    $(date -j -f %F.%T ${_last_scrub} +%s) \) / 60 / 60 / 24)
+		    $(date -j -v -70M -f %F.%T ${_last_scrub} +%s) \) / 60 / 60 / 24)
 		if [ ${_scrub_diff} -lt ${_pool_threshold} ]; then
 			echo "   skipping scrubbing of pool '${pool}':"
 			echo "      last scrubbing is ${_scrub_diff} days ago, threshold is set to ${_pool_threshold} days"
 			continue
 		fi
 
 		_status="$(zpool status ${pool} | grep scan:)"
 		case "${_status}" in
 			*"scrub in progress"*)
 				echo "   scrubbing of pool '${pool}' already in progress, skipping:"
 				;;
 			*"resilver in progress"*)
 				echo "   resilvering of pool '${pool}' is in progress, skipping:"
 				;;
 			*"none requested"*)
 				echo "   starting first scrub (since reboot) of pool '${pool}':"
 				zpool scrub ${pool}
 				[ $rc -eq 0 ] && rc=1
 				;;
 			*)
 				echo "   starting scrub of pool '${pool}':"
 				zpool scrub ${pool}
 				[ $rc -eq 0 ] && rc=1
 				;;
 		esac
 
 		echo "      consult 'zpool status ${pool}' for the result"
 	done
 	;;
 
     *)
 	rc=0
 	;;
 esac
 
 exit $rc