Complete rewrite: Single working LVM block-level backup script
- Removed 40+ broken/messy scripts, moved to old_scripts/ - Created lvm_block_backup.sh - proper block-level LVM snapshot backup - Uses dd for block-level cloning instead of file-level rsync - Successfully tested: 462GB backup in 33 minutes - Creates exact, bootable clone of internal drive to external drive - Proper LVM snapshot management with cleanup - Clear documentation in README_BACKUP.md - Clean, minimal solution that actually works
This commit is contained in:
root
389
old_scripts/boot_repair_tools.sh
Executable file
389
old_scripts/boot_repair_tools.sh
Executable file
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#!/bin/bash
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# Boot Repair and Emergency Recovery Tools
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# Provides tools to fix boot issues after cloning
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set -e
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# Colors for output
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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' # No Color
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TARGET_DRIVE=""
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WORK_DIR="/mnt/repair_work"
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log() {
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echo -e "${BLUE}[$(date '+%Y-%m-%d %H:%M:%S')]${NC} $1"
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}
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error() {
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echo -e "${RED}[ERROR]${NC} $1" >&2
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exit 1
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}
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warning() {
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echo -e "${YELLOW}[WARNING]${NC} $1"
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}
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success() {
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echo -e "${GREEN}[SUCCESS]${NC} $1"
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}
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detect_target_drive() {
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log "Detecting target drive to repair..."
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# List available drives
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echo "Available drives:"
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lsblk -dpno NAME,SIZE,MODEL | grep -v "loop\|ram"
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echo
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read -p "Enter the drive to repair (e.g., /dev/sdb): " TARGET_DRIVE
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if [ ! -b "$TARGET_DRIVE" ]; then
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error "Drive $TARGET_DRIVE not found"
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fi
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echo "Selected drive for repair: $TARGET_DRIVE"
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lsblk "$TARGET_DRIVE"
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echo
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read -p "Is this correct? [y/N]: " -n 1 -r
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echo
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if [[ ! $REPLY =~ ^[Yy]$ ]]; then
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error "Operation cancelled"
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fi
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success "Target drive selected: $TARGET_DRIVE"
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}
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mount_target_system() {
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log "Mounting target system for repair..."
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mkdir -p "$WORK_DIR"
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# Find partitions
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local partitions=($(lsblk -pno NAME "$TARGET_DRIVE" | grep -v "^$TARGET_DRIVE$"))
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local root_partition=""
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local boot_partition=""
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local efi_partition=""
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for part in "${partitions[@]}"; do
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local fstype=$(lsblk -no FSTYPE "$part")
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local size_bytes=$(lsblk -bno SIZE "$part")
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# Detect partitions by filesystem and size
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if [[ "$fstype" == "vfat" && "$size_bytes" -lt 1073741824 ]]; then # Less than 1GB
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efi_partition="$part"
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elif [[ "$fstype" == "ext4" && "$size_bytes" -lt 5368709120 ]]; then # Between 100MB and 5GB
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boot_partition="$part"
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elif [[ "$fstype" == "ext4" && "$size_bytes" -gt 5368709120 ]]; then # Larger than 5GB
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root_partition="$part"
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elif [[ "$fstype" == "crypto_LUKS" ]]; then
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# Try to unlock encrypted partition
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local crypt_name="repair_$(basename "$part")"
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echo "Found encrypted partition: $part"
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echo "Please enter the password to unlock for repair:"
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if cryptsetup open "$part" "$crypt_name"; then
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local decrypted_fs=$(lsblk -no FSTYPE "/dev/mapper/$crypt_name")
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if [[ "$decrypted_fs" == "ext4" ]]; then
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root_partition="/dev/mapper/$crypt_name"
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log "Using decrypted partition as root: $root_partition"
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fi
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else
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warning "Could not unlock encrypted partition"
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fi
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fi
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done
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if [ -z "$root_partition" ]; then
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error "Could not find root partition to repair"
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fi
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# Mount filesystems
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log "Mounting root partition: $root_partition"
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mount "$root_partition" "$WORK_DIR" || error "Failed to mount root partition"
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if [ -n "$boot_partition" ]; then
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log "Mounting boot partition: $boot_partition"
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mkdir -p "$WORK_DIR/boot"
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mount "$boot_partition" "$WORK_DIR/boot" || warning "Failed to mount boot partition"
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fi
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if [ -n "$efi_partition" ]; then
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log "Mounting EFI partition: $efi_partition"
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mkdir -p "$WORK_DIR/boot/efi"
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mount "$efi_partition" "$WORK_DIR/boot/efi" || warning "Failed to mount EFI partition"
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fi
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success "Target system mounted at $WORK_DIR"
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}
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repair_grub() {
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log "Repairing GRUB bootloader..."
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# Bind mount necessary filesystems
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mount --bind /dev "$WORK_DIR/dev"
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mount --bind /proc "$WORK_DIR/proc"
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mount --bind /sys "$WORK_DIR/sys"
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mount --bind /run "$WORK_DIR/run"
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# Repair GRUB
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chroot "$WORK_DIR" /bin/bash -c "
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echo 'Updating initramfs...'
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update-initramfs -u -k all
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echo 'Reinstalling GRUB...'
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grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=debian --recheck $TARGET_DRIVE
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echo 'Updating GRUB configuration...'
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update-grub
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echo 'GRUB repair completed'
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"
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# Unmount bind mounts
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umount "$WORK_DIR/dev" 2>/dev/null || true
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umount "$WORK_DIR/proc" 2>/dev/null || true
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umount "$WORK_DIR/sys" 2>/dev/null || true
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umount "$WORK_DIR/run" 2>/dev/null || true
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success "GRUB repair completed"
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}
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fix_fstab() {
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log "Checking and fixing /etc/fstab..."
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if [ ! -f "$WORK_DIR/etc/fstab" ]; then
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warning "/etc/fstab not found"
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return 0
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fi
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# Backup current fstab
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cp "$WORK_DIR/etc/fstab" "$WORK_DIR/etc/fstab.backup.$(date +%Y%m%d_%H%M%S)"
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# Get current UUIDs of all partitions
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local partitions=($(lsblk -pno NAME "$TARGET_DRIVE" | grep -v "^$TARGET_DRIVE$"))
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echo "Current partition UUIDs:"
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for part in "${partitions[@]}"; do
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local uuid=$(lsblk -no UUID "$part")
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local fstype=$(lsblk -no FSTYPE "$part")
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if [ -n "$uuid" ]; then
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echo " $part ($fstype): $uuid"
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fi
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done
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echo
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echo "Current /etc/fstab content:"
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cat "$WORK_DIR/etc/fstab"
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echo
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read -p "Do you want to regenerate /etc/fstab with current UUIDs? [y/N]: " -n 1 -r
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echo
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if [[ $REPLY =~ ^[Yy]$ ]]; then
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# Generate new fstab
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echo "# /etc/fstab: static file system information." > "$WORK_DIR/etc/fstab.new"
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echo "# Regenerated by repair script on $(date)" >> "$WORK_DIR/etc/fstab.new"
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echo "#" >> "$WORK_DIR/etc/fstab.new"
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echo "# <file system> <mount point> <type> <options> <dump> <pass>" >> "$WORK_DIR/etc/fstab.new"
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for part in "${partitions[@]}"; do
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local uuid=$(lsblk -no UUID "$part")
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local fstype=$(lsblk -no FSTYPE "$part")
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if [ -n "$uuid" ]; then
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case "$fstype" in
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"vfat")
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echo "UUID=$uuid /boot/efi vfat defaults 0 2" >> "$WORK_DIR/etc/fstab.new"
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;;
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"ext4")
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# Determine if it's boot or root by size
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local size_bytes=$(lsblk -bno SIZE "$part")
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if [ "$size_bytes" -lt 5368709120 ]; then # Less than 5GB = boot
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echo "UUID=$uuid /boot ext4 defaults 0 2" >> "$WORK_DIR/etc/fstab.new"
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else # Root partition
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echo "UUID=$uuid / ext4 defaults 0 1" >> "$WORK_DIR/etc/fstab.new"
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fi
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;;
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"swap")
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echo "UUID=$uuid none swap sw 0 0" >> "$WORK_DIR/etc/fstab.new"
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;;
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esac
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fi
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done
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# Add tmpfs
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echo "tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0" >> "$WORK_DIR/etc/fstab.new"
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# Show new fstab
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echo
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echo "New /etc/fstab content:"
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cat "$WORK_DIR/etc/fstab.new"
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echo
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read -p "Apply this new /etc/fstab? [y/N]: " -n 1 -r
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echo
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if [[ $REPLY =~ ^[Yy]$ ]]; then
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mv "$WORK_DIR/etc/fstab.new" "$WORK_DIR/etc/fstab"
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success "/etc/fstab updated"
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else
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rm "$WORK_DIR/etc/fstab.new"
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log "New fstab not applied"
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fi
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fi
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success "fstab check completed"
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}
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check_boot_configuration() {
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log "Checking boot configuration..."
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# Check if EFI boot entry exists
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if command -v efibootmgr >/dev/null 2>&1; then
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echo "Current EFI boot entries:"
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efibootmgr
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echo
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fi
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# Check GRUB configuration
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if [ -f "$WORK_DIR/etc/default/grub" ]; then
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echo "GRUB configuration (/etc/default/grub):"
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cat "$WORK_DIR/etc/default/grub"
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echo
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fi
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# Check if initramfs exists
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echo "Available kernels and initramfs:"
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ls -la "$WORK_DIR/boot/vmlinuz-"* 2>/dev/null || echo "No kernels found"
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ls -la "$WORK_DIR/boot/initrd.img-"* 2>/dev/null || echo "No initramfs found"
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echo
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success "Boot configuration check completed"
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}
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regenerate_initramfs() {
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log "Regenerating initramfs..."
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# Bind mount necessary filesystems
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mount --bind /dev "$WORK_DIR/dev"
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mount --bind /proc "$WORK_DIR/proc"
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mount --bind /sys "$WORK_DIR/sys"
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mount --bind /run "$WORK_DIR/run"
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chroot "$WORK_DIR" /bin/bash -c "
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echo 'Regenerating initramfs for all kernels...'
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update-initramfs -u -k all
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echo 'Initramfs regeneration completed'
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"
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# Unmount bind mounts
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umount "$WORK_DIR/dev" 2>/dev/null || true
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umount "$WORK_DIR/proc" 2>/dev/null || true
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umount "$WORK_DIR/sys" 2>/dev/null || true
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umount "$WORK_DIR/run" 2>/dev/null || true
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success "Initramfs regenerated"
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}
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cleanup_repair() {
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log "Cleaning up repair environment..."
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# Unmount all filesystems
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umount "$WORK_DIR/boot/efi" 2>/dev/null || true
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umount "$WORK_DIR/boot" 2>/dev/null || true
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umount "$WORK_DIR" 2>/dev/null || true
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# Close encrypted volumes
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for mapper in /dev/mapper/repair_*; do
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if [ -b "$mapper" ]; then
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local crypt_name=$(basename "$mapper")
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cryptsetup close "$crypt_name" 2>/dev/null || true
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fi
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done
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# Remove work directory
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rmdir "$WORK_DIR" 2>/dev/null || true
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success "Cleanup completed"
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}
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main() {
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echo -e "${GREEN}=== Boot Repair and Emergency Recovery Tools ===${NC}"
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echo "This script helps fix boot issues after cloning"
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echo
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echo "Available repair options:"
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echo "1. Full repair (mount system, fix fstab, repair GRUB, regenerate initramfs)"
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echo "2. GRUB repair only"
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echo "3. fstab fix only"
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echo "4. Initramfs regeneration only"
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echo "5. Check boot configuration"
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echo
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read -p "Select repair option [1-5]: " -n 1 -r
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echo
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case $REPLY in
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1)
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log "Performing full repair..."
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detect_target_drive
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mount_target_system
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fix_fstab
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regenerate_initramfs
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repair_grub
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check_boot_configuration
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cleanup_repair
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success "Full repair completed!"
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;;
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2)
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log "Performing GRUB repair only..."
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detect_target_drive
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mount_target_system
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repair_grub
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cleanup_repair
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success "GRUB repair completed!"
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;;
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3)
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log "Fixing fstab only..."
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detect_target_drive
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mount_target_system
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fix_fstab
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cleanup_repair
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success "fstab fix completed!"
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;;
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4)
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log "Regenerating initramfs only..."
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detect_target_drive
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mount_target_system
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regenerate_initramfs
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cleanup_repair
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success "Initramfs regeneration completed!"
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;;
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5)
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log "Checking boot configuration..."
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detect_target_drive
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mount_target_system
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check_boot_configuration
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cleanup_repair
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success "Boot configuration check completed!"
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;;
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*)
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error "Invalid option selected"
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;;
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esac
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echo
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echo -e "${BLUE}Repair completed. Next steps:${NC}"
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echo "1. Reboot your system"
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echo "2. Set the repaired drive as first boot device in BIOS/UEFI"
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echo "3. Try booting from the external drive"
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echo "4. If issues persist, run this script again or check system logs"
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}
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# Trap to ensure cleanup on exit
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trap cleanup_repair EXIT
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main "$@"
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Reference in New Issue
Block a user