Separate snapshot creation from snapshot sync
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@ -53,7 +53,7 @@ for local_snapshot in "${LOCAL_SNAPSHOTS[@]}"; do
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done
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if [ $found = true ] ; then
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echo "> Found remotely, settings as last snapshot"
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echo "> Found remotely, setting as last snapshot"
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LAST_SNAPSHOT=$local_snapshot
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EXISTING_SNAPSHOT=""
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else
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130
zsc-sync.sh
Executable file
130
zsc-sync.sh
Executable file
@ -0,0 +1,130 @@
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#!/bin/bash
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# ZSC-Sync - zfs snapshot cron sync
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# Usage: <script> <remote> <remote_dataset>
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ZSC_CONFIG="$HOME/.zsc"
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REMOTE=$1
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if test -z "$REMOTE"; then
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echo "No remote specified"
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exit -1
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fi
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REMOTE_ROOT_DATASET=$2
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if test -z "$REMOTE_ROOT_DATASET"; then
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echo "No remote root dataset specified"
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exit -1
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fi
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### LOCK ###
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echo "Locking ZSC"
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if ! lockfile-create -p -r 2 "zsc"; 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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handle_dataset() {
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DATASET=$1
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D=$2
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W=$3
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M=$4
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Y=$5
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PREFIX=$6
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if test -z "$PREFIX"; then
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PREFIX="zsc-"
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fi
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if test "!no_prefix!" = "$PREFIX"; then
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PREFIX=""
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fi
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RECURSIVE=$7
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if [ $recusive = 'true' ]; then
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echo "Recursive"
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fi
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TARGET_REMOTE_DATASET="$REMOTE_ROOT_DATASET/"$(echo -e $DATASET | sed -r "s/\//_/g")
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echo "--- $DATASET -> $TARGET_REMOTE_DATASET ---"
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### Resume existing transfer ###
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RESUME_TOKEN=$(ssh $REMOTE zfs get -H -p receive_resume_token -o value "$TARGET_REMOTE_DATASET")
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if [ "$RESUME_TOKEN" != "" ] && [ "$RESUME_TOKEN" != "-" ]; then
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echo "Resuming interrupted transfer..."
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zfs send -v -t "$RESUME_TOKEN" | ssh $REMOTE zfs receive -F -s "$TARGET_REMOTE_DATASET" || return 1
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echo "Resumed transfer finished."
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return 0
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fi
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### Sync existing snapshots ###
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REMOTE_SNAPSHOTS=($(ssh $REMOTE zfs list -H -t snapshot -o name -s creation $TARGET_REMOTE_DATASET | cut -d"@" -f 2))
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LOCAL_SNAPSHOTS=($(zfs list -H -t snapshot -o name -s creation $DATASET | cut -d"@" -f 2))
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echo "Remote snapshots: ${#REMOTE_SNAPSHOTS[@]}"
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echo "Local snapshots: ${#LOCAL_SNAPSHOTS[@]}"
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for local_snapshot in "${LOCAL_SNAPSHOTS[@]}"; do
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echo "Syncing local snapshot $local_snapshot ..."
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found=false
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for remote_snapshot in "${REMOTE_SNAPSHOTS[@]}"; do
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if [ "$remote_snapshot" = "$local_snapshot" ] ; then
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found=true
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break
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fi
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done
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if [ $found = true ] ; then
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echo "> Found remotely, setting as last snapshot"
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FROM_SNAPSHOT=$local_snapshot
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TO_SNAPSHOT=""
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else
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echo "> Needs sync"
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TO_SNAPSHOT=$local_snapshot
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fi
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done
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echo "Snapshot are synchronized up to $FROM_SNAPSHOT"
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if test ! -z "$TO_SNAPSHOT"; then
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echo "Synchronizing snapshots from $FROM_SNAPSHOT to $TO_SNAPSHOT ..."
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if test ! -z "$FROM_SNAPSHOT"; then
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incr="-I $FROM_SNAPSHOT"
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fi
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if [ $recusive = 'true' ]; then
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recu="-R"
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fi
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zfs send -v -p $recu $incr $TO_SNAPSHOT | ssh $REMOTE zfs receive -F -s $TARGET_REMOTE_DATASET || return 1
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echo "Done"
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fi
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}
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cat "$ZSC_CONFIG" | while IFS=: read dataset recursive d w m y prefix; do
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echo "| ##### Dataset: $dataset Recursive: $recursive Prefix: $prefix d: $d w: $w m: $m y: $y #####"
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if [ $recursive = "true" ]; then
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SUBDATASETS=($(zfs list -o name | grep "$dataset/"))
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echo -e "| Subdatasets: ${SUBDATASETS[@]}"
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echo -e '|'
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#for p in "${SUBDATASETS[@]}"; do
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# handle_dataset $p $d $w $m $y $prefix | awk '{print "| " $0}' || exit 1
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# echo -e '|'
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#done
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fi
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handle_dataset $dataset $d $w $m $y $prefix $recursive | awk '{print "| " $0}' || exit 1
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echo -e "----------------------------------------------------------------------"
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done
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### UNLOCK ###
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echo "Unlocking ZSC"
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lockfile-remove "zsc"
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40
zsc.sh
40
zsc.sh
@ -7,12 +7,21 @@ CONFIG_FILE="$HOME/.zsc"
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FORMAT='+%Y-%m-%d'
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DATE=$(date $FORMAT)
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### LOCK ###
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echo "Locking ZSC"
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if ! lockfile-create -p -r 2 "zsc"; 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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split_date() {
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echo "$1" | sed -E 's/([0-9]{4})-([0-9]{2})-([0-9]{2})/\1\n\2\n\3/'
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}
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handle_pool() {
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POOL=$1
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handle_dataset() {
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DATASET=$1
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D=$2
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W=$3
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M=$4
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@ -27,9 +36,9 @@ handle_pool() {
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PREFIX=""
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fi
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echo "--- $POOL --- $D $W $M $Y $PREFIX"
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echo "--- $DATASET --- $D $W $M $Y $PREFIX"
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SNAPSHOTS=($(zfs list -t snapshot -o name | grep "$POOL@$PREFIX" | sort -r))
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SNAPSHOTS=($(zfs list -t snapshot -o name | grep "$DATASET@$PREFIX" | sort -r))
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echo "Snapshots: ${#SNAPSHOTS[@]}"
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EXISTS=0
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@ -66,25 +75,30 @@ handle_pool() {
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done
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if [ $EXISTS -eq 0 ]; then
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echo -e "Creating snapshot $POOL@$PREFIX$DATE"
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zfs snapshot $POOL@$PREFIX$DATE
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echo -e "Creating snapshot $DATASET@$PREFIX$DATE"
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zfs snapshot $DATASET@$PREFIX$DATE
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fi
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}
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cat "$CONFIG_FILE" | while IFS=: read pool recursive d w m y prefix; do
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echo "| ##### Pool: $pool Recursive: $recursive Prefix: $prefix d: $d w: $w m: $m y: $y #####"
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cat "$CONFIG_FILE" | while IFS=: read dataset recursive d w m y prefix; do
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echo "| ##### Dataset: $dataset Recursive: $recursive Prefix: $prefix d: $d w: $w m: $m y: $y #####"
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if [ $recursive = "true" ]; then
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SUBPOOLS=($(zfs list -o name | grep "$pool/"))
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echo -e "Subpools: ${SUBPOOLS[@]}"
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SUBDATASETS=($(zfs list -o name | grep "$dataset/"))
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echo -e "| Subdatasets: ${SUBDATASETS[@]}"
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echo -e '|'
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for p in "${SUBPOOLS[@]}"; do
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handle_pool $p $d $w $m $y $prefix | awk '{print "| " $0}'
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for p in "${SUBDATASETS[@]}"; do
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handle_dataset $p $d $w $m $y $prefix | awk '{print "| " $0}'
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echo -e '|'
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done
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fi
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handle_pool $pool $d $w $m $y $prefix | awk '{print "| " $0}'
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handle_dataset $dataset $d $w $m $y $prefix | awk '{print "| " $0}'
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echo -e "----------------------------------------------------------------------"
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done
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### UNLOCK ###
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echo "Unlocking ZSC"
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lockfile-remove "zsc"
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