temporarily disable zfs backups
Signed-off-by: Menno van Leeuwen <menno@vleeuwen.me>
This commit is contained in:
@ -163,145 +163,145 @@
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};
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};
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};
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};
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environment.etc."local/bin/zfs-backup.sh" = {
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# environment.etc."local/bin/zfs-backup.sh" = {
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mode = "0755";
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# mode = "0755";
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text = ''
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# text = ''
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#!/bin/bash
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# #!/bin/bash
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set -euo pipefail
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# set -euo pipefail
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DATE=$(date +%Y%m%d-%H%M)
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# DATE=$(date +%Y%m%d-%H%M)
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DATASETS="music astro photos stash isos ai audiobooks vms old_backups services"
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# DATASETS="music astro photos stash isos ai audiobooks vms old_backups services"
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RETAIN_SNAPSHOTS=24
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# RETAIN_SNAPSHOTS=24
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BACKUP_POOL="backup"
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# BACKUP_POOL="backup"
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SOURCE_POOL="datapool"
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# SOURCE_POOL="datapool"
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log() {
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# log() {
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"
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# echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"
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}
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# }
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ensure_backup_pool() {
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# ensure_backup_pool() {
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if ! zpool list "$BACKUP_POOL" >/dev/null 2>&1; then
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# if ! zpool list "$BACKUP_POOL" >/dev/null 2>&1; then
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log "ERROR: Backup pool '$BACKUP_POOL' does not exist!"
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# log "ERROR: Backup pool '$BACKUP_POOL' does not exist!"
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return 1
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# return 1
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fi
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# fi
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}
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# }
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check_dataset_exists() {
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# check_dataset_exists() {
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local pool=$1
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# local pool=$1
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local dataset=$2
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# local dataset=$2
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zfs list "$pool/$dataset" >/dev/null 2>&1
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# zfs list "$pool/$dataset" >/dev/null 2>&1
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return $?
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# return $?
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}
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# }
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create_backup_dataset() {
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# create_backup_dataset() {
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local dataset=$1
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# local dataset=$1
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local source_pool="$SOURCE_POOL"
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# local source_pool="$SOURCE_POOL"
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local backup_pool="$BACKUP_POOL"
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# local backup_pool="$BACKUP_POOL"
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# Get properties from source dataset
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# # Get properties from source dataset
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local props=$(zfs get -H -o property,value all "$source_pool/$dataset" | \
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# local props=$(zfs get -H -o property,value all "$source_pool/$dataset" | \
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grep -E '^(compression|recordsize|atime|relatime|xattr|acltype)' | \
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# grep -E '^(compression|recordsize|atime|relatime|xattr|acltype)' | \
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awk '{printf "-o %s=%s ", $1, $2}')
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# awk '{printf "-o %s=%s ", $1, $2}')
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log "Creating backup dataset $backup_pool/$dataset with matching properties"
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# log "Creating backup dataset $backup_pool/$dataset with matching properties"
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# shellcheck disable=SC2086
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# # shellcheck disable=SC2086
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zfs create -p ${props} "$backup_pool/$dataset"
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# zfs create -p ${props} "$backup_pool/$dataset"
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# Set some backup-specific properties
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# # Set some backup-specific properties
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zfs set readonly=on "$backup_pool/$dataset"
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# zfs set readonly=on "$backup_pool/$dataset"
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zfs set snapdir=visible "$backup_pool/$dataset"
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# zfs set snapdir=visible "$backup_pool/$dataset"
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log "Successfully created backup dataset $backup_pool/$dataset"
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# log "Successfully created backup dataset $backup_pool/$dataset"
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}
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# }
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get_latest_snapshot() {
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# get_latest_snapshot() {
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local pool=$1
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# local pool=$1
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local dataset=$2
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# local dataset=$2
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local snapshot
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# local snapshot
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snapshot=$(zfs list -t snapshot -H -o name "$pool/$dataset" 2>/dev/null | grep backup- | tail -n1) || true
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# snapshot=$(zfs list -t snapshot -H -o name "$pool/$dataset" 2>/dev/null | grep backup- | tail -n1) || true
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echo "$snapshot"
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# echo "$snapshot"
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}
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# }
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# Ensure backup pool exists
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# # Ensure backup pool exists
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ensure_backup_pool
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# ensure_backup_pool
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for ds in $DATASETS; do
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# for ds in $DATASETS; do
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log "Processing dataset $ds"
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# log "Processing dataset $ds"
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# Check if source dataset exists
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# # Check if source dataset exists
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if ! check_dataset_exists "$SOURCE_POOL" "$ds"; then
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# if ! check_dataset_exists "$SOURCE_POOL" "$ds"; then
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log "Skipping $ds - source dataset $SOURCE_POOL/$ds does not exist"
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# log "Skipping $ds - source dataset $SOURCE_POOL/$ds does not exist"
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continue
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# continue
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fi
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# fi
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# Create backup dataset if it doesn't exist
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# # Create backup dataset if it doesn't exist
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if ! check_dataset_exists "$BACKUP_POOL" "$ds"; then
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# if ! check_dataset_exists "$BACKUP_POOL" "$ds"; then
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log "Backup dataset $BACKUP_POOL/$ds does not exist"
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# log "Backup dataset $BACKUP_POOL/$ds does not exist"
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create_backup_dataset "$ds"
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# create_backup_dataset "$ds"
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fi
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# fi
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# Create new snapshot
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# # Create new snapshot
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local snapshot_name="$SOURCE_POOL/$ds@backup-$DATE"
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# local snapshot_name="$SOURCE_POOL/$ds@backup-$DATE"
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log "Creating new snapshot $snapshot_name"
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# log "Creating new snapshot $snapshot_name"
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zfs snapshot "$snapshot_name"
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# zfs snapshot "$snapshot_name"
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LATEST_BACKUP=$(get_latest_snapshot "$BACKUP_POOL" "$ds")
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# LATEST_BACKUP=$(get_latest_snapshot "$BACKUP_POOL" "$ds")
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if [ -z "$LATEST_BACKUP" ]; then
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# if [ -z "$LATEST_BACKUP" ]; then
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log "No existing backup found - performing full backup of $ds"
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# log "No existing backup found - performing full backup of $ds"
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zfs send "$snapshot_name" | zfs receive -F "$BACKUP_POOL/$ds"
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# zfs send "$snapshot_name" | zfs receive -F "$BACKUP_POOL/$ds"
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else
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# else
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LATEST_SOURCE=$(get_latest_snapshot "$SOURCE_POOL" "$ds" | grep -v "backup-$DATE" | tail -n1)
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# LATEST_SOURCE=$(get_latest_snapshot "$SOURCE_POOL" "$ds" | grep -v "backup-$DATE" | tail -n1)
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if [ -n "$LATEST_SOURCE" ]; then
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# if [ -n "$LATEST_SOURCE" ]; then
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log "Performing incremental backup of $ds from $LATEST_SOURCE to backup-$DATE"
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# log "Performing incremental backup of $ds from $LATEST_SOURCE to backup-$DATE"
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zfs send -i "$LATEST_SOURCE" "$snapshot_name" | zfs receive -F "$BACKUP_POOL/$ds"
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# zfs send -i "$LATEST_SOURCE" "$snapshot_name" | zfs receive -F "$BACKUP_POOL/$ds"
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else
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# else
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log "No suitable source snapshot found for incremental backup - performing full backup of $ds"
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# log "No suitable source snapshot found for incremental backup - performing full backup of $ds"
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zfs send "$snapshot_name" | zfs receive -F "$BACKUP_POOL/$ds"
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# zfs send "$snapshot_name" | zfs receive -F "$BACKUP_POOL/$ds"
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fi
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# fi
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fi
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# fi
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log "Cleaning up old snapshots for $ds"
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# log "Cleaning up old snapshots for $ds"
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# Cleanup source snapshots
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# # Cleanup source snapshots
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if snapshots=$(zfs list -t snapshot -H -o name "$SOURCE_POOL/$ds" | grep backup-); then
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# if snapshots=$(zfs list -t snapshot -H -o name "$SOURCE_POOL/$ds" | grep backup-); then
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echo "$snapshots" | head -n -$RETAIN_SNAPSHOTS | while read -r snap; do
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# echo "$snapshots" | head -n -$RETAIN_SNAPSHOTS | while read -r snap; do
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log "Removing source snapshot: $snap"
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# log "Removing source snapshot: $snap"
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zfs destroy "$snap"
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# zfs destroy "$snap"
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done
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# done
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fi
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# fi
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# Cleanup backup snapshots
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# # Cleanup backup snapshots
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if snapshots=$(zfs list -t snapshot -H -o name "$BACKUP_POOL/$ds" | grep backup-); then
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# if snapshots=$(zfs list -t snapshot -H -o name "$BACKUP_POOL/$ds" | grep backup-); then
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echo "$snapshots" | head -n -$RETAIN_SNAPSHOTS | while read -r snap; do
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# echo "$snapshots" | head -n -$RETAIN_SNAPSHOTS | while read -r snap; do
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log "Removing backup snapshot: $snap"
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# log "Removing backup snapshot: $snap"
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zfs destroy "$snap"
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# zfs destroy "$snap"
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done
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# done
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fi
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# fi
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done
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# done
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log "Backup completed successfully"
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# log "Backup completed successfully"
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'';
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# '';
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};
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# };
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systemd.services.zfs-backup = {
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# systemd.services.zfs-backup = {
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description = "ZFS Backup Service";
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# description = "ZFS Backup Service";
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requires = [ "zfs.target" ];
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# requires = [ "zfs.target" ];
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after = [ "zfs.target" ];
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# after = [ "zfs.target" ];
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path = [ pkgs.zfs ];
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# path = [ pkgs.zfs ];
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serviceConfig = {
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# serviceConfig = {
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Type = "oneshot";
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# Type = "oneshot";
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ExecStart = "/etc/local/bin/zfs-backup.sh";
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# ExecStart = "/etc/local/bin/zfs-backup.sh";
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User = "root";
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# User = "root";
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};
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# };
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};
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# };
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systemd.timers.zfs-backup = {
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# systemd.timers.zfs-backup = {
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description = "Run ZFS backup every 4 hours";
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# description = "Run ZFS backup every 4 hours";
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wantedBy = [ "timers.target" ];
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# wantedBy = [ "timers.target" ];
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timerConfig = {
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# timerConfig = {
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OnBootSec = "15min";
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# OnBootSec = "15min";
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OnUnitActiveSec = "4h";
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# OnUnitActiveSec = "4h";
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RandomizedDelaySec = "5min";
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# RandomizedDelaySec = "5min";
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};
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# };
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};
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# };
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}
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}
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