feat: Add Borg Backup support to simple LVM backup system
- Add LV → Borg and VG → Borg backup modes - GUI: Borg settings panel with repo path, encryption, passphrase - CLI: Enhanced script with Borg options (--new-repo, --encryption, --passphrase) - Automatic repository initialization for new repos - Support for all Borg encryption modes (none, repokey, keyfile) - Mount snapshots temporarily for file-level Borg backups - Comprehensive cleanup of snapshots and mount points - Updated documentation and examples Benefits: - Deduplication and compression - Strong encryption support - Incremental backups capability - Space-efficient storage - Still maintains simple snapshot → backup → cleanup workflow
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@@ -16,22 +16,33 @@ BLUE='\033[0;34m'
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NC='\033[0m'
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usage() {
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echo "Enhanced Simple LVM Backup Script"
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echo "Enhanced Simple LVM Backup Script with Borg Support"
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echo ""
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echo "Usage:"
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echo " $0 lv-to-lv SOURCE_LV TARGET_LV"
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echo " $0 lv-to-raw SOURCE_LV TARGET_DEVICE"
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echo " $0 vg-to-raw SOURCE_VG TARGET_DEVICE"
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echo " $0 lv-to-borg SOURCE_LV REPO_PATH [--new-repo] [--encryption MODE] [--passphrase PASS]"
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echo " $0 vg-to-borg SOURCE_VG REPO_PATH [--new-repo] [--encryption MODE] [--passphrase PASS]"
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echo ""
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echo "Modes:"
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echo " lv-to-lv - Update existing LV backup (SOURCE_LV → TARGET_LV)"
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echo " lv-to-raw - Create fresh backup (SOURCE_LV → raw device)"
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echo " vg-to-raw - Clone entire VG (SOURCE_VG → raw device)"
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echo " lv-to-borg - Backup LV to Borg repository"
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echo " vg-to-borg - Backup entire VG to Borg repository"
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echo ""
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echo "Borg Options:"
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echo " --new-repo Create new repository"
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echo " --encryption MODE Encryption mode: none, repokey, keyfile (default: repokey)"
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echo " --passphrase PASS Repository passphrase"
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echo ""
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echo "Examples:"
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echo " $0 lv-to-lv /dev/internal-vg/root /dev/backup-vg/root"
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echo " $0 lv-to-raw /dev/internal-vg/root /dev/sdb"
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echo " $0 vg-to-raw internal-vg /dev/sdb"
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echo " $0 lv-to-borg /dev/internal-vg/root /path/to/borg/repo --new-repo"
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echo " $0 vg-to-borg internal-vg /path/to/borg/repo --encryption repokey --passphrase mypass"
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echo ""
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echo "List available sources/targets:"
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echo " ./list_drives.sh"
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@@ -70,14 +81,40 @@ cleanup_and_exit() {
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# Trap for cleanup
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trap 'cleanup_and_exit 130' INT TERM
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# Check arguments
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if [ $# -ne 3 ]; then
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# Parse arguments and options
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if [ $# -lt 3 ]; then
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usage
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fi
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MODE="$1"
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SOURCE="$2"
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TARGET="$3"
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shift 3
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# Parse Borg-specific options
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NEW_REPO=false
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ENCRYPTION="repokey"
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PASSPHRASE=""
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while [ $# -gt 0 ]; do
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case "$1" in
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--new-repo)
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NEW_REPO=true
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shift
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;;
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--encryption)
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ENCRYPTION="$2"
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shift 2
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;;
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--passphrase)
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PASSPHRASE="$2"
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shift 2
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;;
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*)
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error "Unknown option: $1"
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;;
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esac
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done
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# Check if running as root
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if [ "$EUID" -ne 0 ]; then
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@@ -86,13 +123,25 @@ fi
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# Validate mode
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case "$MODE" in
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"lv-to-lv"|"lv-to-raw"|"vg-to-raw")
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"lv-to-lv"|"lv-to-raw"|"vg-to-raw"|"lv-to-borg"|"vg-to-borg")
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;;
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*)
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error "Invalid mode: $MODE"
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;;
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esac
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# Check Borg requirements for Borg modes
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if [[ "$MODE" == *"-to-borg" ]]; then
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if ! command -v borg >/dev/null 2>&1; then
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error "Borg Backup is not installed. Please install it: sudo apt install borgbackup"
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fi
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# Set up Borg environment
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if [ -n "$PASSPHRASE" ]; then
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export BORG_PASSPHRASE="$PASSPHRASE"
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fi
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fi
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log "Enhanced Simple LVM Backup"
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log "Mode: $MODE"
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log "Source: $SOURCE"
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@@ -236,6 +285,174 @@ case "$MODE" in
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log "VG to raw device backup completed successfully"
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log "Target device now contains complete LVM structure"
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;;
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"lv-to-borg")
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# LV to Borg repository backup
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if [ ! -e "$SOURCE" ]; then
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error "Source LV does not exist: $SOURCE"
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fi
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# Extract VG and LV names
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VG_NAME=$(lvs --noheadings -o vg_name "$SOURCE" | tr -d ' ')
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LV_NAME=$(lvs --noheadings -o lv_name "$SOURCE" | tr -d ' ')
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SNAPSHOT_NAME="${LV_NAME}_borg_snap"
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SNAPSHOT_PATH="/dev/$VG_NAME/$SNAPSHOT_NAME"
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info "This will backup LV to Borg repository"
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echo ""
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echo -e "${YELLOW}Source LV: $SOURCE${NC}"
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echo -e "${YELLOW}Repository: $TARGET${NC}"
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if [ "$NEW_REPO" = true ]; then
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echo -e "${BLUE}Will create new repository${NC}"
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else
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echo -e "${BLUE}Will add to existing repository${NC}"
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fi
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echo -e "${BLUE}Encryption: $ENCRYPTION${NC}"
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echo ""
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read -p "Continue? (yes/no): " confirm
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if [ "$confirm" != "yes" ]; then
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echo "Backup cancelled."
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exit 0
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fi
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# Initialize repository if needed
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if [ "$NEW_REPO" = true ]; then
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log "Creating new Borg repository: $TARGET"
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if [ "$ENCRYPTION" = "none" ]; then
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borg init --encryption=none "$TARGET" || error "Failed to initialize repository"
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else
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borg init --encryption="$ENCRYPTION" "$TARGET" || error "Failed to initialize repository"
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fi
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log "Repository initialized successfully"
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fi
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log "Creating snapshot of source LV"
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lvcreate -L1G -s -n "$SNAPSHOT_NAME" "$SOURCE" || error "Failed to create snapshot"
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# Create temporary mount point
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TEMP_MOUNT=$(mktemp -d -t borg_backup_XXXXXX)
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# Mount snapshot
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log "Mounting snapshot to $TEMP_MOUNT"
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mount "$SNAPSHOT_PATH" "$TEMP_MOUNT" || error "Failed to mount snapshot"
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# Create Borg archive
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ARCHIVE_NAME="lv_${LV_NAME}_$(date +%Y%m%d_%H%M%S)"
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log "Creating Borg archive: $ARCHIVE_NAME"
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log "This may take a long time depending on data size..."
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borg create --progress --stats "$TARGET::$ARCHIVE_NAME" "$TEMP_MOUNT" || error "Borg backup failed"
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log "Borg backup completed successfully"
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# Cleanup
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log "Cleaning up mount point and snapshot"
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umount "$TEMP_MOUNT" || warn "Failed to unmount"
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rmdir "$TEMP_MOUNT"
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lvremove -f "$SNAPSHOT_PATH" || warn "Failed to remove snapshot"
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SNAPSHOT_PATH=""
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log "LV to Borg backup completed successfully"
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;;
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"vg-to-borg")
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# VG to Borg repository backup
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if ! vgs "$SOURCE" >/dev/null 2>&1; then
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error "Source VG does not exist: $SOURCE"
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fi
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info "This will backup entire VG to Borg repository"
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echo ""
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echo -e "${YELLOW}Source VG: $SOURCE${NC}"
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echo -e "${YELLOW}Repository: $TARGET${NC}"
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if [ "$NEW_REPO" = true ]; then
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echo -e "${BLUE}Will create new repository${NC}"
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else
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echo -e "${BLUE}Will add to existing repository${NC}"
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fi
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echo -e "${BLUE}Encryption: $ENCRYPTION${NC}"
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echo -e "${BLUE}This will backup all logical volumes in the VG${NC}"
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echo ""
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read -p "Continue? (yes/no): " confirm
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if [ "$confirm" != "yes" ]; then
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echo "Backup cancelled."
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exit 0
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fi
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# Initialize repository if needed
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if [ "$NEW_REPO" = true ]; then
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log "Creating new Borg repository: $TARGET"
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if [ "$ENCRYPTION" = "none" ]; then
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borg init --encryption=none "$TARGET" || error "Failed to initialize repository"
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else
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borg init --encryption="$ENCRYPTION" "$TARGET" || error "Failed to initialize repository"
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fi
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log "Repository initialized successfully"
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fi
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# Get all LVs in VG
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LV_LIST=$(lvs --noheadings -o lv_name "$SOURCE" | tr -d ' ')
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if [ -z "$LV_LIST" ]; then
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error "No logical volumes found in VG: $SOURCE"
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fi
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log "Found logical volumes: $(echo $LV_LIST | tr '\n' ' ')"
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# Create base temp directory
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BASE_TEMP_DIR=$(mktemp -d -t borg_vg_backup_XXXXXX)
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SNAPSHOTS_CREATED=""
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# Create snapshots and mount them
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for LV_NAME in $LV_LIST; do
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SNAPSHOT_NAME="${LV_NAME}_borg_snap"
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SNAPSHOT_PATH="/dev/$SOURCE/$SNAPSHOT_NAME"
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LV_PATH="/dev/$SOURCE/$LV_NAME"
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MOUNT_POINT="$BASE_TEMP_DIR/$LV_NAME"
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log "Creating snapshot: $SNAPSHOT_NAME"
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lvcreate -L500M -s -n "$SNAPSHOT_NAME" "$LV_PATH" || {
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warn "Failed to create snapshot for $LV_NAME"
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continue
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}
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SNAPSHOTS_CREATED="$SNAPSHOTS_CREATED $SNAPSHOT_PATH"
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# Create mount point and mount
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mkdir -p "$MOUNT_POINT"
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log "Mounting $SNAPSHOT_PATH to $MOUNT_POINT"
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mount "$SNAPSHOT_PATH" "$MOUNT_POINT" || {
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warn "Failed to mount $SNAPSHOT_PATH"
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continue
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}
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done
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# Create Borg archive
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ARCHIVE_NAME="vg_${SOURCE}_$(date +%Y%m%d_%H%M%S)"
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log "Creating Borg archive: $ARCHIVE_NAME"
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log "This may take a long time depending on data size..."
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borg create --progress --stats "$TARGET::$ARCHIVE_NAME" "$BASE_TEMP_DIR" || error "Borg backup failed"
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log "Borg backup of entire VG completed successfully"
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# Cleanup
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log "Cleaning up mount points and snapshots"
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for MOUNT_POINT in "$BASE_TEMP_DIR"/*; do
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if mountpoint -q "$MOUNT_POINT" 2>/dev/null; then
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umount "$MOUNT_POINT" || warn "Failed to unmount $MOUNT_POINT"
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fi
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done
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rm -rf "$BASE_TEMP_DIR"
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for SNAPSHOT_PATH in $SNAPSHOTS_CREATED; do
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log "Removing snapshot $SNAPSHOT_PATH"
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lvremove -f "$SNAPSHOT_PATH" || warn "Failed to remove snapshot $SNAPSHOT_PATH"
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done
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log "VG to Borg backup completed successfully"
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;;
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esac
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echo ""
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