Add estimated backup size calculations to native Linux installer
FEATURE: Display estimated file and block device sizes before backup configuration NEW FUNCTIONS: - calculate_file_backup_size() - Calculates total size of files to backup * Uses du with exclude patterns * Handles multiple paths * Returns human-readable format (KB/MB/GB) - get_block_device_size() - Gets block device total size * Uses blockdev or lsblk * Returns size in GB DISPLAY LOCATIONS: 1. During initial setup: - Shows estimated file size after entering backup paths - Shows block device size after selecting device - Includes helpful notes about compression/deduplication 2. When editing existing configuration: - Same size displays during reconfiguration 3. In configuration summaries: - Final installation summary - Settings update summary USER EXPERIENCE: ✓ Estimated file backup size: 45.3 GB ✓ Block device size: 256.0 GB ⚠ Note: Actual size may be smaller due to PBS deduplication and compression ⚠ Note: Block device backups can take 20-30+ minutes depending on size This helps users: - Understand backup size before committing - Plan storage requirements on PBS server - Set realistic time expectations for backups 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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zaphod-black
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435d05b678
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1 changed files with 89 additions and 1 deletions
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@ -58,6 +58,58 @@ prompt_password() {
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echo "$user_input"
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}
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# Calculate estimated backup size for files
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calculate_file_backup_size() {
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local paths="$1"
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local exclude_patterns="$2"
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local total_size=0
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for path in $paths; do
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if [ -e "$path" ]; then
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# Build exclude arguments for du
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local exclude_args=""
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for pattern in $exclude_patterns; do
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exclude_args="$exclude_args --exclude=$pattern"
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done
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# Calculate size (in KB) and add to total
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local path_size=$(du -sk $exclude_args "$path" 2>/dev/null | awk '{print $1}' || echo "0")
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total_size=$((total_size + path_size))
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fi
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done
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# Convert KB to human-readable format
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if [ $total_size -ge 1048576 ]; then
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# GB
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echo "scale=2; $total_size / 1048576" | bc | awk '{printf "%.1f GB", $1}'
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elif [ $total_size -ge 1024 ]; then
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# MB
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echo "scale=2; $total_size / 1024" | bc | awk '{printf "%.1f MB", $1}'
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else
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# KB
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echo "${total_size} KB"
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fi
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}
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# Get block device size
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get_block_device_size() {
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local device="$1"
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if [ ! -b "$device" ]; then
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echo "unknown"
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return
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fi
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# Try blockdev first, fall back to lsblk
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if command -v blockdev &>/dev/null; then
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local size_bytes=$(blockdev --getsize64 "$device" 2>/dev/null || echo "0")
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local size_gb=$(echo "scale=2; $size_bytes / 1073741824" | bc 2>/dev/null || echo "0")
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echo "${size_gb} GB"
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else
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lsblk -b -d -n -o SIZE "$device" 2>/dev/null | awk '{printf "%.1f GB", $1/1073741824}' || echo "unknown"
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fi
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}
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# Multi-target helper functions
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list_targets() {
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if [ ! -d "$TARGETS_DIR" ]; then
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@ -796,6 +848,13 @@ reconfigure_backup_settings() {
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if [[ "$BACKUP_TYPE" == "files" ]] || [[ "$BACKUP_TYPE" == "both" ]]; then
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BACKUP_PATHS=$(prompt "Enter paths to backup (space-separated)" "$BACKUP_PATHS")
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EXCLUDE_PATTERNS=$(prompt "Enter exclusion patterns (space-separated)" "$EXCLUDE_PATTERNS")
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# Calculate and display estimated file backup size
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echo
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info "Calculating estimated backup size..."
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ESTIMATED_FILE_SIZE=$(calculate_file_backup_size "$BACKUP_PATHS" "$EXCLUDE_PATTERNS")
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echo -e "${GREEN}✓${NC} Estimated file backup size: ${YELLOW}${ESTIMATED_FILE_SIZE}${NC}"
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info "Note: Actual size may be smaller due to PBS deduplication and compression"
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fi
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if [[ "$BACKUP_TYPE" == "block" ]] || [[ "$BACKUP_TYPE" == "both" ]]; then
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@ -824,6 +883,11 @@ reconfigure_backup_settings() {
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error "Configuration cancelled"
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return 1
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fi
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else
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# Display block device size
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BLOCK_DEVICE_SIZE=$(get_block_device_size "$BLOCK_DEVICE")
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echo -e "${GREEN}✓${NC} Block device size: ${YELLOW}${BLOCK_DEVICE_SIZE}${NC}"
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warn "Note: Block device backups can take 20-30+ minutes depending on size"
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fi
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fi
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@ -887,10 +951,16 @@ reconfigure_backup_settings() {
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if [[ "$BACKUP_TYPE" == "files" ]] || [[ "$BACKUP_TYPE" == "both" ]]; then
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echo " Backup Paths: ${BACKUP_PATHS}"
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if [ -n "$ESTIMATED_FILE_SIZE" ]; then
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echo " Estimated File Backup Size: ${ESTIMATED_FILE_SIZE}"
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fi
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fi
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if [[ "$BACKUP_TYPE" == "block" ]] || [[ "$BACKUP_TYPE" == "both" ]]; then
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echo " Block Device: ${BLOCK_DEVICE}"
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if [ -n "$BLOCK_DEVICE_SIZE" ]; then
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echo " Block Device Size: ${BLOCK_DEVICE_SIZE}"
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fi
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fi
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if [[ "$BACKUP_TYPE" == "both" ]]; then
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@ -1112,6 +1182,13 @@ interactive_config() {
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if [[ "$BACKUP_TYPE" == "files" ]] || [[ "$BACKUP_TYPE" == "both" ]]; then
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BACKUP_PATHS=$(prompt "Enter paths to backup (space-separated)" "/")
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EXCLUDE_PATTERNS=$(prompt "Enter exclusion patterns (space-separated)" "/tmp /var/tmp /var/cache /proc /sys /dev /run")
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# Calculate and display estimated file backup size
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echo
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info "Calculating estimated backup size..."
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ESTIMATED_FILE_SIZE=$(calculate_file_backup_size "$BACKUP_PATHS" "$EXCLUDE_PATTERNS")
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echo -e "${GREEN}✓${NC} Estimated file backup size: ${YELLOW}${ESTIMATED_FILE_SIZE}${NC}"
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info "Note: Actual size may be smaller due to PBS deduplication and compression"
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fi
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if [[ "$BACKUP_TYPE" == "block" ]] || [[ "$BACKUP_TYPE" == "both" ]]; then
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@ -1144,6 +1221,11 @@ interactive_config() {
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error "Installation cancelled"
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exit 1
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fi
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else
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# Display block device size
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BLOCK_DEVICE_SIZE=$(get_block_device_size "$BLOCK_DEVICE")
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echo -e "${GREEN}✓${NC} Block device size: ${YELLOW}${BLOCK_DEVICE_SIZE}${NC}"
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warn "Note: Block device backups can take 20-30+ minutes depending on size"
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fi
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fi
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@ -1955,10 +2037,16 @@ show_summary() {
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if [[ "$BACKUP_TYPE" == "files" ]] || [[ "$BACKUP_TYPE" == "both" ]]; then
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echo " Backup Paths: ${BACKUP_PATHS}"
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if [ -n "$ESTIMATED_FILE_SIZE" ]; then
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echo " Estimated File Backup Size: ${ESTIMATED_FILE_SIZE}"
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fi
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fi
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if [[ "$BACKUP_TYPE" == "block" ]] || [[ "$BACKUP_TYPE" == "both" ]]; then
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echo " Block Device: ${BLOCK_DEVICE}"
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if [ -n "$BLOCK_DEVICE_SIZE" ]; then
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echo " Block Device Size: ${BLOCK_DEVICE_SIZE}"
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fi
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fi
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if [[ "$BACKUP_TYPE" == "both" ]]; then
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