69 lines
2.4 KiB
Bash
69 lines
2.4 KiB
Bash
#!/bin/bash
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(
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flock -n 200 || { echo 'locked via flock on file /var/lock/zfs-backup-mm' ; exit 1; }
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zfsnap_block () {
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if [ $zfsnap_enable = "y" ]; then
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for dataset in $source_datasets;
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do
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echo "Creating snapshot on "$dataset""
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zfSnap -d -a "$zfsnap_days_keep_snaps"d "$dataset"
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done
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backup_block
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else
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echo "zfsnap_enable is not set to Y, skipping creating snapshots"
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backup_block
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fi
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}
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backup_block () {
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source_zfs_snapshots=$(zfs list -t snapshot)
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backups_server_zfs_snapshots=$(ssh -p $backup_server_port $backup_server zfs list -t snapshot)
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for dataset in $source_datasets;
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do
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source_snap=$(echo "$source_zfs_snapshots" | grep "$dataset"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | tail -n1 | cut -d"@" -f2 | cut -d" " -f1)
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dataset_clean=$(echo $dataset | grep -o '[^/]*$')
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backup_snap=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_dataset"/"$dataset_clean"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | tail -n1 | cut -d"@" -f2 | cut -d" " -f1)
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if [ -z "$backup_snap" ]
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then
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echo "Snapshot on backup server not found, sending "$dataset"@"$source_snap" to server "$backup_server" "$backup_server_dataset"/"$dataset_clean""
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zfs send -c "$dataset"@"$source_snap" | pv | ssh "$backup_server" -p "$backup_server_port" zfs recv "$backup_server_dataset"/"$dataset_clean"
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else
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echo "Snapshot on backup server found, sending incremental from "$dataset"@"$backup_snap" to "$dataset"@"$source_snap" to server "$backup_server" "$backup_server_dataset"/"$dataset_clean""
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zfs send -ci "$dataset"@"$backup_snap" "$dataset"@"$source_snap" | pv | ssh "$backup_server" -p "$backup_server_port" zfs recv "$backup_server_dataset"/"$dataset_clean" -F
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fi
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done
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del_snaps_block
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}
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del_snaps_block () {
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if [ $backup_server_delete_old_snaps = "y" ]; then
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for dataset in $source_datasets;
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do
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dataset_clean=$(echo $dataset | grep -o '[^/]*$')
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snaps_to_delete=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_dataset"/"$dataset_clean"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | head -n -"$zfsnap_days_keep_snaps" | cut -d" " -f1)
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for snap in $snaps_to_delete
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do
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echo "Deleting snapshot "$snap" on "$backup_server""
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ssh "$backup_server" -p "$backup_server_port" zfs destroy "$snap"
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done
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done
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else
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echo "backup_server_delete_old_snaps is not set to Y, skipping deleting snapshots"
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fi
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exit 0
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}
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if [[ $# -eq 0 ]] ; then
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echo 'Config file is not set'
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exit 1
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fi
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source $1
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zfsnap_block
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) 200>/var/lock/zfs-backup-mm
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