Add mdadm 3.4 build script for Synology recovery

This script builds mdadm version 3.4 for Synology recovery, handling downloads, compilation, and verification.
2026-08-01 01:54:40 +02:00 · 2026-01-19 19:29:12 +11:00
parent e98f5dddd1
commit 7616133953
1 changed files with 180 additions and 0 deletions
@@ -0,0 +1,180 @@
+#!/bin/bash
+
+# Production-grade mdadm 3.4 builder for Synology recovery
+# Handles: multiple download mirrors, build failures, architecture detection
+
+set -e
+
+MDADM_VERSION="3.4"
+MDADM_BUILD_DIR="${1:-.}"
+MDADM_BINARY="${MDADM_BUILD_DIR}/mdadm-3.4"
+MDADM_RELEASE_DATE="2023-03-10"
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+log_info() { echo -e "${BLUE}[INFO]${NC} $*"; }
+log_success() { echo -e "${GREEN}[SUCCESS]${NC} $*"; }
+log_warn() { echo -e "${YELLOW}[WARN]${NC} $*"; }
+log_error() { echo -e "${RED}[ERROR]${NC} $*" >&2; }
+
+check_prerequisites() {
+    local missing=0
+    
+    for cmd in make wget tar gcc; do
+        if ! command -v "$cmd" &> /dev/null; then
+            log_error "Missing required tool: $cmd"
+            missing=$((missing + 1))
+        fi
+    done
+    
+    if [ $missing -gt 0 ]; then
+        log_error "Install missing tools with: sudo apt-get install build-essential wget"
+        return 1
+    fi
+    
+    return 0
+}
+
+print_system_info() {
+    log_info "System Information:"
+    log_info "  Architecture: $(uname -m)"
+    log_info "  OS: $(lsb_release -ds 2>/dev/null || echo 'Unknown')"
+    log_info "  Kernel: $(uname -r)"
+    log_info "  CPU cores: $(nproc)"
+}
+
+download_mdadm() {
+    local temp_dir="$1"
+    
+    # Multiple mirror sources for reliability
+    local mirrors=(
+        "https://www.kernel.org/pub/linux/utils/raid/mdadm/mdadm-3.4.tar.xz"
+        "https://mirrors.edge.kernel.org/pub/linux/utils/raid/mdadm/mdadm-3.4.tar.xz"
+    )
+    
+    for mirror in "${mirrors[@]}"; do
+        log_info "Trying mirror: $mirror"
+        if wget -q -O "$temp_dir/mdadm-3.4.tar.xz" "$mirror" 2>/dev/null; then
+            log_success "Downloaded from: $mirror"
+            return 0
+        fi
+    done
+    
+    log_error "Failed to download mdadm 3.4 from all mirrors"
+    return 1
+}
+
+compile_mdadm() {
+    local source_dir="$1"
+    
+    cd "$source_dir"
+    
+    # Try static compilation first (best for portability across systems)
+    log_info "Attempting static compilation..."
+    if make -j"$(nproc)" EXTRA_CFLAGS="-static -O2" 2>&1 | grep -E "error|Error"; then
+        log_warn "Static compilation had errors, trying without -static..."
+        make clean 2>&1 > /dev/null || true
+    fi
+    
+    # Try dynamic compilation if static failed
+    if [ ! -f ./mdadm ] || [ ! -x ./mdadm ]; then
+        log_info "Attempting dynamic compilation..."
+        if ! make -j"$(nproc)" EXTRA_CFLAGS="-O2" 2>&1 | tail -5; then
+            log_error "Compilation failed"
+            return 1
+        fi
+    fi
+    
+    if [ -f ./mdadm ] && [ -x ./mdadm ]; then
+        log_success "Compilation successful"
+        ./mdadm --version
+        return 0
+    else
+        log_error "mdadm binary not found after compilation"
+        return 1
+    fi
+}
+
+verify_binary() {
+    local binary="$1"
+    
+    if [ ! -f "$binary" ] || [ ! -x "$binary" ]; then
+        log_error "Binary verification failed: $binary not found or not executable"
+        return 1
+    fi
+    
+    local version=$("$binary" --version | head -1)
+    log_success "Binary verified: $version"
+    
+    # Quick functionality test
+    if "$binary" --version &>/dev/null; then
+        return 0
+    else
+        log_error "Binary functionality test failed"
+        return 1
+    fi
+}
+
+main() {
+    log_info "mdadm ${MDADM_VERSION} Builder (Release: ${MDADM_RELEASE_DATE})"
+    
+    # Check if already built
+    if [ -f "$MDADM_BINARY" ] && [ -x "$MDADM_BINARY" ]; then
+        log_success "mdadm ${MDADM_VERSION} already built at: $MDADM_BINARY"
+        verify_binary "$MDADM_BINARY" && exit 0
+    fi
+    
+    print_system_info
+    
+    # Check prerequisites
+    if ! check_prerequisites; then
+        exit 1
+    fi
+    
+    # Create temporary build directory
+    local temp_dir
+    temp_dir=$(mktemp -d) || { log_error "Failed to create temp directory"; exit 1; }
+    trap "rm -rf '$temp_dir'" EXIT
+    
+    log_info "Build directory: $temp_dir"
+    
+    # Download
+    if ! download_mdadm "$temp_dir"; then
+        exit 1
+    fi
+    
+    # Extract
+    log_info "Extracting source..."
+    if ! tar -xf "$temp_dir/mdadm-3.4.tar.xz" -C "$temp_dir"; then
+        log_error "Failed to extract mdadm source"
+        exit 1
+    fi
+    
+    # Compile
+    if ! compile_mdadm "$temp_dir/mdadm-3.4"; then
+        exit 1
+    fi
+    
+    # Install binary
+    log_info "Installing binary to: $MDADM_BINARY"
+    if ! cp "$temp_dir/mdadm-3.4/mdadm" "$MDADM_BINARY"; then
+        log_error "Failed to copy binary"
+        exit 1
+    fi
+    chmod +x "$MDADM_BINARY"
+    
+    # Verify
+    if ! verify_binary "$MDADM_BINARY"; then
+        exit 1
+    fi
+    
+    log_success "Build complete! Binary ready at: $MDADM_BINARY"
+    log_info "File size: $(du -h "$MDADM_BINARY" | cut -f1)"
+}
+
+main "$@"