Backup method of incremental transfer ZFS partitions from one pool to another within a single machine

zfs_start_transfer_backup.sh

#!/bin/sh

#The initial creation of ZFS partition for further incremental copying
pool=zroot #source distination
pool2=tank #recipient pool
volume2=$pool2/backup/$pool #recipient

fs_list='/mysql /usr /usr/ports /usr/src /usr/home /tmp /var /var/crash /var/db /var/db/pkg
/var/empty /var/imap /var/imap-cache /var/log /var/mail /var/run /var/tmp'"
"`zfs list | grep ^zroot/www | awk ' {print $5}' | tr "\r\n" " "`

for fs in "" $fs_list
  do
   zfs list -t snapshot    $pool${fs}@temp > /dev/null 2>&1 && zfs destroy     $pool${fs}@temp
   zfs list -t snapshot $volume2${fs}@temp > /dev/null 2>&1 && zfs destroy  $volume2${fs}@temp
   echo snapshotting ${fs}
   zfs snapshot $pool${fs}@temp &&
     ( echo snapshop done
        zfs send $pool${fs}@temp | zfs receive -F $volume2${fs}@temp &&
       ( echo sending done
         zfs rename $pool${fs}@temp       $pool${fs}@laststate || exit
         zfs rename $volume2${fs}@temp $volume2${fs}@laststate || exit
         echo done for ${fs} ) )
done

zfs_transfer_backup.sh

#!/bin/sh

pool=zroot #source distination
pool2=tank #recipient pool
volume2=$pool2/backup/$pool #recipient

fs_list='/mysql /usr /usr/ports /usr/src /usr/home /tmp /var /var/crash /var/db /var/db/pkg
/var/empty /var/imap /var/imap-cache /var/log /var/mail /var/run /var/tmp'"
"`zfs list | grep ^zroot/www | awk ' {print $5}' | tr "\r\n" " "`

for fs in "" $fs_list
  do
   zfs list -t snapshot    $pool${fs}@temp > /dev/null 2>&1 && zfs destroy     $pool${fs}@temp
   zfs list -t snapshot $volume2${fs}@temp > /dev/null 2>&1 && zfs destroy  $volume2${fs}@temp
   echo snapshotting ${fs}
   zfs snapshot $pool${fs}@temp &&
     ( echo snapshop done
        zfs send -vi $pool${fs}@laststate $pool${fs}@temp | zfs receive -Fv $volume2${fs}@temp &&
       ( echo sending done
            zfs destroy $pool${fs}@laststate    || exit
            zfs destroy $volume2${fs}@laststate || exit
            zfs rename $pool${fs}@temp       $pool${fs}@laststate || exit
            zfs rename $volume2${fs}@temp $volume2${fs}@laststate || exit
            echo done for ${fs} ) )
done