add_lzop_compression

change parameter -i to -I when doing incremental backup

README.md

@@ -8,7 +8,7 @@ Edit example config file, run script and config as parameter.
 
 __Requirements:__
 
-zfSnap, pv, Ubuntu (tested on Ubuntu 18.04)
+zfSnap, pv, lzop, Ubuntu (tested on Ubuntu 18.04, 19.04, 19.10 and 20.04)
 
 __THE PROGRAM IS DISTRIBUTED IN THE HOPE THAT IT WILL BE USEFUL, BUT WITHOUT ANY WARRANTY. IT IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.__
 

zfs-backup-mm

@@ -1,6 +1,20 @@
 #!/bin/bash
+
+if [[ ! -f "$1" ]]
+then
+echo "Config file not exists!"
+exit 1
+fi
+
+if [ -z "$2" ]
+then
+lock_variable="/var/lock/zfs-backup-mm"
+else
+lock_variable="$2"
+fi
+
 (
-     flock -n 200 || { echo 'locked via flock on file /var/lock/zfs-backup-mm' ; exit 1; }
+     flock -n 200 || { echo "locked via flock on file $lock_variable" ; exit 1; }
 
 zfsnap_block () {
 
@@ -38,14 +52,15 @@ backup_snap=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_datase
 backup_snaps=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_dataset"/"$dataset_clean"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | cut -d"@" -f2 | cut -d" " -f1)
 source_backups_server_match=$(grep -Fxf <(echo "$source_snaps") <(echo "$backup_snaps"))
 source_backups_server_match_tailed=$(echo "$source_backups_server_match" | tail -n1)
+dataset_recordsize=$(zfs get recordsize -H -o value "$dataset")
 
 if [ -z "$backup_snap" ]
 then
 	echo "Snapshot on backup server not found, sending "$dataset"@"$source_snap" to server "$backup_server" "$backup_server_dataset"/"$dataset_clean""
-	zfs send -c "$dataset"@"$source_snap" | pv -L "$shape_megabytes"m | ssh -$backup_server_ipv "$backup_server" -p "$backup_server_port" zfs recv "$backup_server_dataset"/"$dataset_clean" && echo "Send OK"
+	zfs send "$dataset"@"$source_snap" | lzop | pv -L "$shape_megabytes"m | ssh -$backup_server_ipv "$backup_server" -p "$backup_server_port" "lzop -d | zfs recv -o recordsize="$dataset_recordsize" "$backup_server_dataset"/"$dataset_clean"" && echo "Send OK"
 else
 	echo "Snapshot on backup server found, sending incremental from "$dataset"@"$source_backups_server_match_tailed" to "$dataset"@"$source_snap" to server "$backup_server" "$backup_server_dataset"/"$dataset_clean""
-	zfs send -ci "$dataset"@"$source_backups_server_match_tailed" "$dataset"@"$source_snap" | pv -L "$shape_megabytes"m | ssh -$backup_server_ipv "$backup_server" -p "$backup_server_port" zfs recv "$backup_server_dataset"/"$dataset_clean" -F && echo "Send OK"
+	zfs send -I "$dataset"@"$source_backups_server_match_tailed" "$dataset"@"$source_snap" | lzop | pv -L "$shape_megabytes"m | ssh -$backup_server_ipv "$backup_server" -p "$backup_server_port" "lzop -d | zfs recv -o recordsize="$dataset_recordsize" "$backup_server_dataset"/"$dataset_clean" -F" && echo "Send OK"
 fi
 done
 del_snaps_block
@@ -57,7 +72,7 @@ for dataset in $source_datasets;
 do
 
 dataset_clean=$(echo $dataset | grep -o '[^/]*$')
-snaps_to_delete=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_dataset"/"$dataset_clean"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | head -n -"$backup_server_number_keep_snaps" | cut -d" " -f1)
+snaps_to_delete=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_dataset"/"$dataset_clean"@ | head -n -"$backup_server_number_keep_snaps" | cut -d" " -f1)
 
 for snap in $snaps_to_delete
 do
@@ -78,4 +93,4 @@ if [[ $# -eq 0 ]] ; then
 fi
 	source $1
 	zfsnap_block
-) 200>/var/lock/zfs-backup-mm
+) 200>$lock_variable