ZFS scripts

zfs_report.sh

#!/bin/sh

echo "ZFS listing:"
/sbin/zfs list
echo

echo "ZFS compression ratio:"
/sbin/zfs get compressratio | /usr/bin/grep -v @
echo

echo "ZFS ARC (Adaptive Replacement Cache):"
/sbin/sysctl -n kstat.zfs.misc.arcstats.c | awk '{print "ZFS ARC mem: " ($1/1024/1024/1024) " GB"}'
/sbin/sysctl -n kstat.zfs.misc.arcstats.hits kstat.zfs.misc.arcstats.misses | sed 'N;s/\n/ /g' | awk '{ print "ZFS ARC hitratio: " $1/($1+$2)*100 "%" }'
echo

echo "ZPool Status:"
/sbin/zpool status
echo 

echo "ZPool iostat:"
/sbin/zpool iostat -v
echo

echo "Drive ID:"
for i in `/sbin/zpool status | /usr/bin/sed -n "s/[^a-z]\{1,\}\([a-z]\{2,3\}[0-9]\{1,\}\).\{1,\}/\1/g p"`;
do
	echo -n "  $i:	"
	/usr/local/sbin/smartctl -i /dev/$i | /usr/bin/sed -n -e '5,7p' | /usr/bin/sed -e 's/^.\{1,\}:[^0-9A-Za-z]\{1,\}//g' | /usr/bin/sed -n -e 'N;s/\n/ (/;N;s/\n/) - S:/;p'
done
echo 

echo "Drive health:"
for i in `/sbin/zpool status | /usr/bin/sed -n "s/[^a-z]\{1,\}\([a-z]\{2,3\}[0-9]\{1,\}\).\{1,\}/\1/g p"`;
do
	    echo -n "  $i:	"
		/usr/local/sbin/smartctl -H /dev/$i | /usr/bin/grep -Eo "result: .+"
done
echo

echo "Drive temperature:"
for i in `/sbin/zpool status | /usr/bin/sed -n "s/[^a-z]\{1,\}\([a-z]\{2,3\}[0-9]\{1,\}\).\{1,\}/\1/g p"`;
do
	    echo -n "  $i:	"
		/usr/local/sbin/smartctl -l scttempsts /dev/$i | /usr/bin/sed -n -e "9p" | /usr/bin/grep -Eo "[0-9?]+ Celsius"
done
echo

echo "ZFS snapshots:"
/sbin/zfs list -t snapshot | /usr/bin/awk 'BEGIN { LAST = "a"} { match($0,"^.+@"); NEXT = substr($0,0,RLENGTH); if (LAST != NEXT) {print ""; LAST = NEXT;}; print $0; }'
echo

zfs_snapshot.sh

#!/bin/sh

WEEKDAY=$(date -j +%u);

for TARGET in $(zfs list -t filesystem | sed -n 3,/eof/p | awk '{ print $1 }' )
do
	if [ $WEEKDAY = "1" ]; then
#		echo "destroying: $TARGET@2weeksago";
		zfs destroy -f $TARGET@2weeksago
#		echo "backup: $TARGET"
		zfs rename -r $TARGET@1weekago @2weeksago
	else 
		zfs destroy -f $TARGET@1weekago	 
	fi
	zfs rename -r $TARGET@6daysago @1weekago
	zfs rename -r $TARGET@5daysago @6daysago		
	zfs rename -r $TARGET@4daysago @5daysago
	zfs rename -r $TARGET@3daysago @4daysago
	zfs rename -r $TARGET@2daysago @3daysago
	zfs rename -r $TARGET@yesterday @2daysago
	zfs snapshot -r $TARGET@yesterday
done;