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zfs-backup-mm
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add check if source snap exists on source dataset

This commit is contained in:
Milan Meduna 2019-05-01 00:09:48 +02:00
parent a09da0ced5
commit 9678729356
1 changed files with 8 additions and 3 deletions
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zfs-backup-mm
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@ -31,17 +31,21 @@ backups_server_zfs_snapshots=$(ssh -$backup_server_ipv -p $backup_server_port $b
for dataset in $source_datasets;
do
source_snap=$(echo "$source_zfs_snapshots" | grep "$dataset"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | tail -n1 | cut -d"@" -f2 | cut -d" " -f1)
dataset_clean=$(echo $dataset | grep -o '[^/]*$')
source_snap=$(echo "$source_zfs_snapshots" | grep "$dataset"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | tail -n1 | cut -d"@" -f2 | cut -d" " -f1)
source_snaps=$(echo "$source_zfs_snapshots" | grep "$dataset"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | cut -d"@" -f2 | cut -d" " -f1)
backup_snap=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_dataset"/"$dataset_clean"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | tail -n1 | cut -d"@" -f2 | cut -d" " -f1)
backup_snaps=$(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 "$source_backups_server_match" | tail -n1)
if [ -z "$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"/"$dataset_clean" && echo "Send OK"
else
echo "Snapshot on backup server found, sending incremental from "$dataset"@"$backup_snap" to "$dataset"@"$source_snap" to server "$backup_server" "$backup_server_dataset"/"$dataset_clean""
zfs send -ci "$dataset"@"$backup_snap" "$dataset"@"$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"
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"
fi
done
del_snaps_block
@ -51,6 +55,7 @@ del_snaps_block () {
if [ $backup_server_delete_old_snaps = "y" ]; then
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)