61 lines
1.1 KiB
Bash
61 lines
1.1 KiB
Bash
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#!/bin/sh
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if ! lockfile-create -p -r 2 $0; then
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echo "Another backup is running, aborting"
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exit 49
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fi
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### Arguments ###
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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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NAME=$2
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if test -z "$NAME"; then
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echo "Missing snapshot name argument"
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exit 1
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fi
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PREVIOUS_NAME=$3
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if test -z "$NAME"; then
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echo "Missing previous snapshot name argument"
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exit 1
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fi
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TARGET=$4
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if test -z "$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=$5
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if test -z "$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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SNAPSHOT="$DATASET@$NAME"
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PREVIOUS_SNAPSHOT="$DATASET@$PREVIOUS_NAME"
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REMOTE_NAME="$TARGET_PATH/"$(echo -e $DATASET | sed -r "s/\//_/g")
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# Take snapshot
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echo "Creating $SNAPSHOT snapshot..."
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zfs snapshot $SNAPSHOT || exit 1
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echo "Snapshot created."
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# Send snapshot
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echo "Sending snapshot ($PREVIOUS_SNAPSHOT --- $SNAPSHOT) to $REMOTE_NAME ..."
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if test ! -z "$PREVIOUS_NAME"; then
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incr="-I $PREVIOUS_SNAPSHOT"
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fi
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zfs send -v -p $incr $SNAPSHOT | ssh $TARGET zfs receive -F $REMOTE_NAME || exit 1
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echo "Snapshot sent."
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# Remove lock
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echo "Backup finished. Removing lock..."
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lockfile-remove $0
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