3 # Author: Alan J. Pippin
4 # Description: This script calls zfs-replicate for each filesystem needing
5 # to be backed up, or replicated, to another ZFS pool.
7 # source our configuration
8 config="${0%/*}/zfs-scripts.conf"
9 [ -e "${config}.dist" ] && . ${config}.dist
10 [ -e "${config}" ] && . ${config}
12 # Setup some default values
13 logfile="$logdir/zfs-replicate.log"
14 mylogfile="$logdir/zfs-replicate-all.log"
18 # Make sure we aren't already running
20 PROCESS_LIST=`tempfile`
21 ps -ef | grep -e "$SCRIPT_NAME" | grep -v grep | grep -v $$ | grep -v $PPID >> $PROCESS_LIST
22 if [[ $? == 0 ]]; then
23 echo "$date Another $SCRIPT_NAME process is already running" >> $mylogfile
24 cat $PROCESS_LIST >> $mylogfile
27 [[ -e "$PROCESS_LIST" ]] && rm -f $PROCESS_LIST
29 # This function checks to see if our runtime has exceeded our stoptime
31 if [[ $maxruntime == 0 ]]; then
34 currenttime=`date +%s`
35 elapsedtime=$(($currenttime - $starttime))
36 stoptime=$(($maxruntime*60))
37 if [[ $elapsedtime -gt $stoptime ]]; then
38 #echo "$elapsedtime > $stoptime"
41 #echo "$elapsedtime < $stoptime"
45 # This function cleanup and exit trap
47 #echo "cleanup and exit"
51 trap cleanup_and_exit INT
53 # This function executes the replicate command and checks the stoptime
55 zfs-replicate $* >> $logfile 2>&1
62 # This function obtains the date a given snapshot was created in epoch seconds
64 snapshot=${local_pool}/${1}${previous_backup_marker}
65 $zfs list -t snapshot ${snapshot} > /dev/null 2>&1
67 $zfs get creation ${snapshot} > /dev/null 2>&1
69 snap_creation=`$zfs get creation ${snapshot} | grep $1 | awk '{ print $3" "$4" "$5" "$6" "$7 }'`
70 snap_age=`date -d "$snap_creation" +%s`
80 # Obtain the zpool guid for the local pool
81 local_pool_guid=`zpool get guid $local_pool 2>&1 | grep $local_pool | awk '{ print $3 }'`
82 zpool get guid $local_pool > /dev/null 2>&1
84 echo >&2 "-E- Unable to extract the guid for the local pool: $local_pool"
88 # Setup our backup marker names
89 current_backup_marker=@current-backup-${local_pool_guid}
90 previous_backup_marker=@previous-backup-${local_pool_guid}
92 # Auto snapshot every zfs filesystem on the system specified below
93 echo "$date ZFS replicate started" >> $logfile
94 echo "$date ZFS replicate started" | tee -a $mylogfile
96 # Sort the filesystems to replicate by the oldest backup first
98 for filesystem in $filesystems_to_replicate; do
99 age=`snapshot_age $filesystem`
100 echo $filesystem $age >> $tmpfile
102 sorted_filesystems=`cat $tmpfile | sort -n -k 2 | awk '{ print $1 }'`
105 # Replicate the sorted filesystems
106 for filesystem in $sorted_filesystems; do
107 echo "-> Replicating $remote:$filesystem to ${local_pool}/${filesystem}" | tee -a $mylogfile
108 replicate $remote $filesystem
112 echo `date` ZFS replicate complete >> $logfile
113 echo `date` ZFS replicate complete | tee -a $mylogfile
115 # Parse the log file and extract our backup stats
116 zfs-log-parser "$logfile" "$date" >> $logfile
117 zfs-log-parser "$logfile" "$date" | tee -a $mylogfile