143 lines
3.4 KiB
Bash
143 lines
3.4 KiB
Bash
#!/bin/sh
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# Full system backup script
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# Backs up entire system except excluded directories
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set -e
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# Config
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CONFIG_FILE="/etc/backup.conf"
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LOG_DIR="${HOME}/.local/var/log"
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LOG_FILE="${LOG_DIR}/backup.log"
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LOCK_FILE="/tmp/backup-full.lock"
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# Ensure log directory exists
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mkdir -p "$LOG_DIR"
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# Colors
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m'
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log() {
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*" >> "$LOG_FILE"
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echo "$*"
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}
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error() {
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printf "${RED}✖${NC} %s\n" "$1"
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log "ERROR: $1"
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}
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info() {
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printf "${BLUE}ℹ${NC} %s\n" "$1"
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log "INFO: $1"
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}
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success() {
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printf "${GREEN}✓${NC} %s\n" "$1"
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log "SUCCESS: $1"
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}
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# Load config
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if [ ! -f "$CONFIG_FILE" ]; then
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error "Configuration file not found: $CONFIG_FILE"
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exit 1
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fi
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# shellcheck source=/dev/null
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. "$CONFIG_FILE"
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# Create lock file
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if [ -f "$LOCK_FILE" ]; then
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error "Backup already running (lock file exists: $LOCK_FILE)"
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exit 1
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fi
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trap 'rm -f "$LOCK_FILE"' EXIT
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touch "$LOCK_FILE"
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# Check cooldown
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if [ -f "$LAST_BACKUP_FILE" ]; then
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LAST_BACKUP=$(cat "$LAST_BACKUP_FILE")
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NOW=$(date +%s)
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ELAPSED=$((NOW - LAST_BACKUP))
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if [ "$ELAPSED" -lt "$BACKUP_COOLDOWN" ]; then
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REMAINING=$((BACKUP_COOLDOWN - ELAPSED))
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error "Backup cooldown active. Wait ${REMAINING}s before next backup"
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exit 0
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fi
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fi
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# Start backup
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log "=========================================="
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log "Starting FULL SYSTEM BACKUP"
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log "=========================================="
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# Check NAS connectivity
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info "Checking NAS connectivity..."
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if ! ping -c 1 -W 2 "$NAS_HOST" >/dev/null 2>&1; then
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error "NAS host $NAS_HOST is not reachable"
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exit 1
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fi
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if ! ssh -p "$NAS_PORT" -o ConnectTimeout=5 -o BatchMode=yes \
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"${NAS_USER}@${NAS_HOST}" "echo test" >/dev/null 2>&1; then
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error "SSH connection to NAS failed"
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exit 1
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fi
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success "NAS is reachable"
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# Create backup directory name with timestamp
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BACKUP_NAME="full-$(date +%Y%m%d-%H%M%S)"
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BACKUP_DEST="${NAS_USER}@${NAS_HOST}:${NAS_PATH}/${BACKUP_NAME}"
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info "Backup destination: ${BACKUP_DEST}"
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# Build exclude arguments for rsync
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EXCLUDE_ARGS=""
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for pattern in "${EXCLUDE_PATTERNS[@]}"; do
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EXCLUDE_ARGS="$EXCLUDE_ARGS --exclude=$pattern"
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done
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# Run rsync backup
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info "Starting rsync (this may take a while)..."
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# shellcheck disable=SC2086
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if rsync -avz --delete --numeric-ids \
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--rsync-path="mkdir -p ${NAS_PATH}/${BACKUP_NAME} && rsync" \
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-e "ssh -p ${NAS_PORT}" \
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$EXCLUDE_ARGS \
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/ \
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"$BACKUP_DEST" >> "$LOG_FILE" 2>&1; then
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success "Backup completed successfully!"
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# Update last backup timestamp
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LAST_BACKUP_FILE="${HOME}/.local/var/backup/last-backup"
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mkdir -p "$(dirname "$LAST_BACKUP_FILE")"
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date +%s > "$LAST_BACKUP_FILE"
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# Log backup size
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BACKUP_SIZE=$(ssh -p "$NAS_PORT" "${NAS_USER}@${NAS_HOST}" \
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"du -sh '${NAS_PATH}/${BACKUP_NAME}' 2>/dev/null | cut -f1" || echo "unknown")
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info "Backup size: $BACKUP_SIZE"
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# Clean up old backups (keep last N)
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info "Cleaning up old backups (keeping last ${RETENTION_COUNT})..."
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ssh -p "$NAS_PORT" "${NAS_USER}@${NAS_HOST}" \
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"cd '${NAS_PATH}' && ls -t | grep '^full-' | tail -n +$((RETENTION_COUNT + 1)) | xargs -r rm -rf" \
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>> "$LOG_FILE" 2>&1 || true
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else
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error "Backup failed! Check $LOG_FILE for details"
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exit 1
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fi
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log "=========================================="
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log "Backup completed at $(date)"
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log "=========================================="
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