71 lines
1.7 KiB
Bash
Executable File
71 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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DATASET=$1
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if test -z "$DATASET"; then
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echo "Missing dataset argument"
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exit 1
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fi
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TARGET=$2
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if test -z "$TARGET"; then
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echo "Missing target"
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exit 1
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fi
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TARGET_PATH=$3
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if test -z "$TARGET_PATH"; then
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echo "Missing target path"
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exit 1
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fi
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### New snapshot ###
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NAME=$(date +%Y-%m-%d_%H-%M-%S)
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SNAPSHOT="$DATASET@$NAME"
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echo "New snapshot name is: $NAME"
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echo "New snapshot is: $SNAPSHOT"
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### Default last snapshot ###
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DEFAULT_LAST_SNAPSHOT=$(zfs list -t snapshot -o name -s creation -H $DATASET | tail -n 1)
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DEFAULT_LAST_NAME=$(echo -e $DEFAULT_LAST_SNAPSHOT | rev | cut -d"@" -f1 | rev)
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echo "Default last snapshot is: $DEFAULT_LAST_SNAPSHOT"
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echo "Default last snapshot name is: $DEFAULT_LAST_NAME"
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### Tracking folder ###
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tracking_folder="$HOME/.local/share/zfs_backup"
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if test ! -d $tracking_folder; then
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echo "Creating backup tracking files directory"
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mkdir -p $tracking_folder
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fi
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### Last snapshot ###
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LAST_SNAPSHOT=$DEFAULT_LAST_SNAPSHOT
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last_snapshot_file="$tracking_folder/last_snapshot_"$(echo -e $DATASET | sed -r "s/\//_/g")
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if test -f $last_snapshot_file; then
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LAST_SNAPSHOT=$(cat $last_snapshot_file)
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echo "Found $last_snapshot_file"
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else
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echo "No $last_snapshot_file, resolving to default"
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fi
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LAST_SNAPSHOT_NAME=$(echo -e $LAST_SNAPSHOT | rev | cut -d"@" -f1 | rev)
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echo "Last snapshot is: $LAST_SNAPSHOT"
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echo "Last snapshot name is: $LAST_SNAPSHOT_NAME"
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echo "Starting backup with args $DATASET $NAME $LAST_SNAPSHOT_NAME"
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$HOME/scripts/zfs_backup.sh $DATASET $NAME $LAST_SNAPSHOT_NAME $TARGET $TARGET_PATH || exit 1
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echo "Saving new snapshot in tracking folder..."
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echo -e $SNAPSHOT > $last_snapshot_file
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echo "Destroying last snapshot..."
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# zfs destroy $LAST_SNAPSHOT
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echo "(dry)"
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echo "Backup finished."
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