mylogfile="$logdir/zfs-replicate-all.log"
date=`date`
starttime=`date +%s`
+tmpfile=`tempfile`
# Make sure we aren't already running
SCRIPT_NAME=${0##*/}
}
trap cleanup_and_exit INT
+fatal_and_exit() {
+ # echo message to terminal
+ echo -e 2>&1 "$1"
+ # send email notification
+ echo -e "$1" | $mailx -s "zfs-replicate-all on $hostname failed" "$2"
+ # exit with bad return code unless 3rd argument was defined that says not to
+ if [[ -z "$3" ]]; then
+ exit 1
+ fi
+}
+
# This function executes the replicate command and checks the stoptime
replicate() {
zfs-replicate $* >> $logfile 2>&1
# This function obtains the date a given snapshot was created in epoch seconds
snapshot_age() {
- snapshot=${local_pool}/${1}${previous_backup_marker}
+ snapshot=${backup_pool}/${1}${previous_backup_marker}
$zfs list -t snapshot ${snapshot} > /dev/null 2>&1
if [ $? == 0 ]; then
$zfs get creation ${snapshot} > /dev/null 2>&1
fi
}
-# Obtain the zpool guid for the local pool
-local_pool_guid=`zpool get guid $local_pool 2>&1 | grep $local_pool | awk '{ print $3 }'`
-zpool get guid $local_pool > /dev/null 2>&1
+# Replicate every zfs filesystem specified in the config file
+echo "$date ZFS replicate started" >> $logfile
+echo "$date ZFS replicate started" | tee -a $mylogfile
+
+# Loop over each backup pool
+backup_pools=$backup_pool
+for backup_pool in $backup_pools; do
+
+# Import the local backup pool if needed and the option is given to do so, else error out
+zpool list -H $backup_pool > $tmpfile 2>&1
if [ $? != 0 ]; then
- echo >&2 "-E- Unable to extract the guid for the local pool: $local_pool"
- exit 1
+ if [[ $import_export_backup_pool == 1 ]]; then
+ zpool import $backup_pool >> $tmpfile 2>&1
+ if [ $? != 0 ]; then
+ msgs=`cat $tmpfile`
+ fatal_and_exit "-E- unable to import the backup pool '$backup_pool' on $hostname: $msgs" "$mailto"
+ fi
+ else
+ msgs=`cat $tmpfile`
+ fatal_and_exit "-E- The local backup pool on $hostname, '$backup_pool' doesn't seem to exist: $msgs" "$mailto"
+ fi
fi
+rm -f $tmpfile
-# Setup our backup marker names
-current_backup_marker=@current-backup-${local_pool_guid}
-previous_backup_marker=@previous-backup-${local_pool_guid}
+# Obtain the zpool guid for the local backup pool
+backup_pool_guid=`zpool get guid $backup_pool 2>&1 | grep $backup_pool | awk '{ print $3 }'`
+zpool get guid $backup_pool > /dev/null 2>&1
+if [ $? != 0 ]; then
+ fatal_and_exit "-E- Unable to extract the guid for the local backup pool on $hostname: $backup_pool" "$mailto"
+fi
-# Auto snapshot every zfs filesystem on the system specified below
-echo "$date ZFS replicate started" >> $logfile
-echo "$date ZFS replicate started" | tee -a $mylogfile
+# Setup our backup marker names
+current_backup_marker=@current-backup-${backup_pool_guid}
+previous_backup_marker=@previous-backup-${backup_pool_guid}
# Sort the filesystems to replicate by the oldest backup first
-tmpfile=`tempfile`
for filesystem in $filesystems_to_replicate; do
- age=`snapshot_age $filesystem`
- echo $filesystem $age >> $tmpfile
+ if [[ $filesystem =~ ':' ]]; then
+ dst_pool=${filesystem%%:*}
+ filesystem=${filesystem#*:} # remove src_pool from string
+ else
+ dst_pool=$backup_pool
+ fi
+ # Only backup filesystems that are specified to go this backup_pool
+ if [[ $backup_pool == $dst_pool ]]; then
+ age=`snapshot_age $filesystem`
+ echo $filesystem $age >> $tmpfile
+ fi
done
sorted_filesystems=`cat $tmpfile | sort -n -k 2 | awk '{ print $1 }'`
rm -f $tmpfile
# Replicate the sorted filesystems
for filesystem in $sorted_filesystems; do
- echo "-> Replicating $remote:$filesystem to ${local_pool}/${filesystem}" | tee -a $mylogfile
- replicate $remote $filesystem
+ echo "-> Replicating $remote:$filesystem to ${backup_pool}/${filesystem}" | tee -a $mylogfile
+ replicate $remote $filesystem $backup_pool
+done
+
+# Export the local pool if told to do so
+if [[ $import_export_backup_pool == 1 ]]; then
+ # Don't export the pool if there is a currently running zfs-scrub operation
+ ps -ef | grep "zfs-scrub" | grep -q "${backup_pool}" | grep -v grep
+ if [ $? != 0 ]; then
+ zpool export $backup_pool >> $tmpfile 2>&1
+ if [ $? != 0 ]; then
+ sleep 300
+ zpool export $backup_pool >> $tmpfile 2>&1
+ if [ $? != 0 ]; then
+ lsof /$backup_pool/* >> $tmpfile 2>&1
+ msgs=`cat $tmpfile`
+ fatal_and_exit "-E- unable to export the local backup pool $backup_pool on $hostname: $msgs" "$mailto" 0
+ fi
+ fi
+ fi
+fi
+rm -f $tmpfile
+
done
# All done