🔧 Add GRUB boot repair tools for LVM migration
- fix_grub_boot.sh: Comprehensive GRUB repair for external M.2 - diagnose_boot_issue.sh: Diagnostics for boot problems - Fixes reset/reboot issues after LVM migration - Handles initramfs, GRUB reinstall, and configuration updates
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179
diagnose_boot_issue.sh
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179
diagnose_boot_issue.sh
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#!/bin/bash
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# LVM Boot Diagnostics Script
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# Checks the current state of the LVM migration and identifies boot issues
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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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log() { echo -e "${BLUE}[$(date '+%H:%M:%S')]${NC} $1"; }
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error() { echo -e "${RED}[ERROR]${NC} $1"; }
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success() { echo -e "${GREEN}[SUCCESS]${NC} $1"; }
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warning() { echo -e "${YELLOW}[WARNING]${NC} $1"; }
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echo -e "${GREEN}=== LVM Boot Diagnostics ===${NC}"
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echo
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# Check system state
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log "Checking current system state..."
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echo "Currently booted from: $(df / | tail -1 | awk '{print $1}')"
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echo "Running kernel: $(uname -r)"
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echo "System: $(hostname)"
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echo
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# Check available drives
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log "Available block devices:"
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lsblk -f
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echo
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# Check LVM status
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log "LVM Status:"
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echo "Physical Volumes:"
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sudo pvs 2>/dev/null || echo "No PVs found"
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echo "Volume Groups:"
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sudo vgs 2>/dev/null || echo "No VGs found"
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echo "Logical Volumes:"
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sudo lvs 2>/dev/null || echo "No LVs found"
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echo
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# Check for system-vg specifically
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if sudo vgs system-vg >/dev/null 2>&1; then
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success "Found system-vg volume group"
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log "system-vg details:"
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sudo vgs system-vg
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sudo lvs system-vg
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# Try to mount and check contents
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log "Checking external system contents..."
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if [ ! -d /tmp/check-external ]; then
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mkdir -p /tmp/check-external
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if sudo mount /dev/system-vg/root /tmp/check-external >/dev/null 2>&1; then
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success "External root filesystem is mountable"
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# Check key system directories
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for dir in "/etc" "/boot" "/usr" "/var"; do
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if [ -d "/tmp/check-external$dir" ]; then
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success "Found system directory: $dir"
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else
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warning "Missing system directory: $dir"
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fi
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done
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# Check for GRUB files
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if [ -d "/tmp/check-external/boot/grub" ]; then
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success "GRUB directory found"
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if [ -f "/tmp/check-external/boot/grub/grub.cfg" ]; then
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success "GRUB configuration found"
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else
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warning "GRUB configuration missing"
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fi
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else
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warning "GRUB directory missing"
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fi
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# Check fstab
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if [ -f "/tmp/check-external/etc/fstab" ]; then
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success "fstab found"
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log "fstab LVM entries:"
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grep -E "system-vg|UUID=" "/tmp/check-external/etc/fstab" || echo "No LVM entries found"
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else
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warning "fstab missing"
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fi
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sudo umount /tmp/check-external
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else
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error "Cannot mount external root filesystem"
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fi
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fi
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else
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error "system-vg volume group not found"
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echo "This suggests the LVM migration did not complete successfully"
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fi
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echo
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# Check EFI partition
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log "Checking for EFI boot partition..."
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if [ -b /dev/sda1 ]; then
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success "Found EFI partition /dev/sda1"
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if [ ! -d /tmp/check-efi ]; then
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mkdir -p /tmp/check-efi
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if sudo mount /dev/sda1 /tmp/check-efi >/dev/null 2>&1; then
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success "EFI partition is mountable"
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if [ -d "/tmp/check-efi/EFI" ]; then
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success "EFI directory found"
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log "EFI boot entries:"
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ls -la "/tmp/check-efi/EFI/" 2>/dev/null || echo "No EFI entries"
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if [ -f "/tmp/check-efi/EFI/debian/grubx64.efi" ]; then
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success "Debian GRUB EFI bootloader found"
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else
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warning "Debian GRUB EFI bootloader missing"
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fi
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else
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warning "EFI directory missing"
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fi
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sudo umount /tmp/check-efi
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else
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error "Cannot mount EFI partition"
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fi
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fi
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else
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error "EFI partition /dev/sda1 not found"
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fi
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echo
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# Provide diagnosis and recommendations
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log "=== DIAGNOSIS ==="
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if sudo vgs system-vg >/dev/null 2>&1; then
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success "LVM migration appears to have completed"
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if [ -b /dev/sda1 ] && sudo mount /dev/sda1 /tmp/check-efi >/dev/null 2>&1; then
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if [ -f "/tmp/check-efi/EFI/debian/grubx64.efi" ]; then
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success "GRUB bootloader appears to be installed"
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echo
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echo -e "${BLUE}Likely causes of boot reset issue:${NC}"
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echo "1. GRUB configuration points to wrong device"
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echo "2. initramfs missing LVM support"
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echo "3. BIOS/UEFI boot order incorrect"
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echo "4. Secure Boot enabled (conflicts with GRUB)"
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echo
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echo -e "${GREEN}Recommended action:${NC}"
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echo "Run: sudo ./fix_grub_boot.sh"
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else
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warning "GRUB bootloader missing"
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echo -e "${GREEN}Recommended action:${NC}"
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echo "Run: sudo ./fix_grub_boot.sh"
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fi
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sudo umount /tmp/check-efi 2>/dev/null || true
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else
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error "EFI partition issues detected"
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echo -e "${GREEN}Recommended action:${NC}"
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echo "Run: sudo ./fix_grub_boot.sh"
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fi
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else
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error "LVM migration incomplete or failed"
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echo -e "${GREEN}Recommended action:${NC}"
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echo "Re-run migration: sudo ./migrate_to_lvm.sh"
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fi
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# Cleanup
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rm -rf /tmp/check-external /tmp/check-efi 2>/dev/null || true
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