mirror of
https://github.com/acedanger/shell.git
synced 2025-12-06 03:20:12 -08:00
611 lines
20 KiB
Bash
Executable File
611 lines
20 KiB
Bash
Executable File
#!/bin/bash
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# Plex Backup Validation and Monitoring Script
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# Usage: ./validate-plex-backups.sh [--fix] [--report]
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set -e
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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'
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# Configuration
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SCRIPT_DIR="$(dirname "$(readlink -f "$0")")"
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BACKUP_ROOT="/mnt/share/media/backups/plex"
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JSON_LOG_FILE="$SCRIPT_DIR/logs/plex-backup.json"
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REPORT_FILE="$SCRIPT_DIR/logs/backup-validation-$(date +%Y%m%d_%H%M%S).log"
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# Expected files in backup
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EXPECTED_FILES=(
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"com.plexapp.plugins.library.db"
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"com.plexapp.plugins.library.blobs.db"
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"Preferences.xml"
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)
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# Files that may not exist in older backups (with approximate introduction dates)
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# This helps provide better context for missing files
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declare -A OPTIONAL_FILES=(
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["com.plexapp.plugins.library.blobs.db"]="20250526_144500" # Blobs DB introduced between 07:55 and 14:45 on 5/26
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)
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log_message() {
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local message="$1"
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local clean_message="$2"
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# Display colored message to terminal
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echo -e "$(date '+%H:%M:%S') $message"
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# Strip ANSI codes and log clean version to file
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if [ -n "$clean_message" ]; then
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echo "$(date '+%H:%M:%S') $clean_message" >> "$REPORT_FILE"
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else
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# Strip ANSI escape codes for file logging
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echo "$(date '+%H:%M:%S') $message" | sed 's/\x1b\[[0-9;]*m//g' >> "$REPORT_FILE"
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fi
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}
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log_error() {
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log_message "${RED}ERROR: $1${NC}" "ERROR: $1"
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}
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log_success() {
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log_message "${GREEN}SUCCESS: $1${NC}" "SUCCESS: $1"
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}
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log_warning() {
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log_message "${YELLOW}WARNING: $1${NC}" "WARNING: $1"
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}
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log_info() {
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log_message "${BLUE}INFO: $1${NC}" "INFO: $1"
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}
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# Check dependencies
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check_dependencies() {
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local missing_deps=()
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# Check for required commands
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if ! command -v tar >/dev/null 2>&1; then
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missing_deps+=("tar")
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fi
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if ! command -v jq >/dev/null 2>&1; then
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missing_deps+=("jq")
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fi
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if ! command -v find >/dev/null 2>&1; then
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missing_deps+=("find")
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fi
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if ! command -v df >/dev/null 2>&1; then
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missing_deps+=("df")
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fi
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if ! command -v du >/dev/null 2>&1; then
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missing_deps+=("du")
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fi
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if [ ${#missing_deps[@]} -gt 0 ]; then
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log_error "Missing required dependencies: ${missing_deps[*]}"
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log_info "Please install missing dependencies before running this script"
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return 1
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fi
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return 0
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}
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# Check backup directory structure
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validate_backup_structure() {
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log_info "Validating backup directory structure..."
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if [ ! -d "$BACKUP_ROOT" ]; then
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log_error "Backup root directory not found: $BACKUP_ROOT"
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return 1
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fi
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local backup_count=$(find "$BACKUP_ROOT" -maxdepth 1 -type f -name "plex-backup-*.tar.gz" | wc -l)
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log_info "Found $backup_count backup files"
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if [ "$backup_count" -eq 0 ]; then
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log_warning "No backup files found"
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return 1
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fi
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return 0
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}
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# Validate individual backup
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validate_backup() {
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local backup_file="$1"
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local backup_name=$(basename "$backup_file")
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local errors=0
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log_info "Validating backup: $backup_name"
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# Check if file exists and is readable
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if [ ! -f "$backup_file" ] || [ ! -r "$backup_file" ]; then
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log_error "Backup file not accessible: $backup_file"
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return 1
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fi
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# Test archive integrity
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if ! tar -tzf "$backup_file" >/dev/null 2>&1; then
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log_error "Archive integrity check failed: $backup_name"
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errors=$((errors + 1))
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else
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log_success "Archive integrity check passed: $backup_name"
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# Check for expected files in archive
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local archive_contents=$(tar -tzf "$backup_file" 2>/dev/null)
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# Check if this is a legacy backup with dated subdirectory
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local has_dated_subdir=false
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if echo "$archive_contents" | grep -q "^\./[0-9]\{8\}/" || echo "$archive_contents" | grep -q "^[0-9]\{8\}/"; then
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has_dated_subdir=true
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log_info " Detected legacy backup format with dated subdirectory"
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fi
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for file in "${EXPECTED_FILES[@]}"; do
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local file_found=false
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if [ "$has_dated_subdir" = true ]; then
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# For legacy backups, look for files in dated subdirectory (with or without timestamps)
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if echo "$archive_contents" | grep -q "^\./[0-9]\{8\}/$file" || \
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echo "$archive_contents" | grep -q "^\./[0-9]\{8\}/$file\.[0-9]\{8\}_[0-9]\{6\}$" || \
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echo "$archive_contents" | grep -q "^[0-9]\{8\}/$file" || \
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echo "$archive_contents" | grep -q "^[0-9]\{8\}/$file\.[0-9]\{8\}_[0-9]\{6\}$"; then
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file_found=true
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fi
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else
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# For new backups, look for files at root level
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if echo "$archive_contents" | grep -q "^\./$file$" || \
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echo "$archive_contents" | grep -q "^$file$"; then
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file_found=true
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fi
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fi
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if [ "$file_found" = true ]; then
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log_success " Found: $file"
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else
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# Check if this is an optional file that might not exist in older backups
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local backup_name=$(basename "$backup_file")
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local backup_datetime=$(echo "$backup_name" | sed 's/plex-backup-\([0-9]\{8\}_[0-9]\{6\}\)\.tar\.gz/\1/')
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if [[ -n "${OPTIONAL_FILES[$file]}" ]] && [[ "$backup_datetime" < "${OPTIONAL_FILES[$file]}" ]]; then
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log_warning " Missing file (expected for backup date): $file"
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log_info " Note: $file was introduced around ${OPTIONAL_FILES[$file]}, this backup is from $backup_datetime"
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else
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log_error " Missing file: $file"
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errors=$((errors + 1))
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fi
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fi
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done
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# Check for unexpected files (more lenient for legacy backups)
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local unexpected_files=()
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while IFS= read -r line; do
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# Skip directory entries and current directory marker
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if [[ "$line" == "./" ]] || [[ "$line" == */ ]] || [[ -z "$line" ]]; then
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continue
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fi
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# Extract filename from path (handle both legacy and new formats)
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local filename=""
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if [[ "$line" =~ ^\./[0-9]{8}/(.+)$ ]] || [[ "$line" =~ ^[0-9]{8}/(.+)$ ]]; then
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# Legacy format: extract filename from dated subdirectory
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filename="${BASH_REMATCH[1]}"
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# Remove timestamp suffix if present
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filename=$(echo "$filename" | sed 's/\.[0-9]\{8\}_[0-9]\{6\}$//')
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elif [[ "$line" =~ ^\./(.+)$ ]]; then
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# New format: extract filename from ./ prefix
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filename="${BASH_REMATCH[1]}"
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else
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# Direct filename
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filename="$line"
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fi
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# Check if this is an expected file
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local is_expected=false
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for expected_file in "${EXPECTED_FILES[@]}"; do
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if [[ "$filename" == "$expected_file" ]]; then
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is_expected=true
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break
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fi
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done
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if [ "$is_expected" = false ]; then
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unexpected_files+=("$line")
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fi
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done <<< "$archive_contents"
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# Report unexpected files if any found
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if [ ${#unexpected_files[@]} -gt 0 ]; then
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for unexpected_file in "${unexpected_files[@]}"; do
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log_warning " Unexpected file: $unexpected_file"
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done
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fi
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fi
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return $errors
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}
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# Check backup freshness
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check_backup_freshness() {
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log_info "Checking backup freshness..."
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local latest_backup=$(find "$BACKUP_ROOT" -maxdepth 1 -type f -name "plex-backup-*.tar.gz" 2>/dev/null | sort | tail -1)
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if [ -z "$latest_backup" ]; then
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log_error "No backups found"
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return 1
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fi
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local backup_filename=$(basename "$latest_backup")
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# Extract date from filename: plex-backup-YYYYMMDD_HHMMSS.tar.gz
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local backup_datetime=$(echo "$backup_filename" | sed 's/plex-backup-\([0-9]\{8\}_[0-9]\{6\}\)\.tar\.gz/\1/')
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# Validate that we extracted a valid datetime
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if [[ ! "$backup_datetime" =~ ^[0-9]{8}_[0-9]{6}$ ]]; then
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log_error "Could not parse backup date from filename: $backup_filename"
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return 1
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fi
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local backup_date="${backup_datetime%_*}" # Remove time part
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# Validate date format and convert to timestamp
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if ! backup_timestamp=$(date -d "${backup_date:0:4}-${backup_date:4:2}-${backup_date:6:2}" +%s 2>/dev/null); then
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log_error "Invalid backup date format: $backup_date"
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return 1
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fi
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local current_timestamp=$(date +%s)
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local age_days=$(( (current_timestamp - backup_timestamp) / 86400 ))
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log_info "Latest backup: $backup_datetime ($age_days days old)"
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if [ "$age_days" -gt 7 ]; then
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log_warning "Latest backup is older than 7 days"
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return 1
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elif [ "$age_days" -gt 3 ]; then
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log_warning "Latest backup is older than 3 days"
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else
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log_success "Latest backup is recent"
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fi
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return 0
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}
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# Validate JSON log file
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validate_json_log() {
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log_info "Validating JSON log file..."
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if [ ! -f "$JSON_LOG_FILE" ]; then
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log_error "JSON log file not found: $JSON_LOG_FILE"
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return 1
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fi
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# Check if jq is available (should be caught by dependency check)
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if ! command -v jq >/dev/null 2>&1; then
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log_error "jq command not found - cannot validate JSON"
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return 1
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fi
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# Validate JSON syntax
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local jq_output
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if ! jq_output=$(jq empty "$JSON_LOG_FILE" 2>&1); then
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log_error "JSON log file is invalid: $jq_output"
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return 1
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fi
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# Get entry count safely
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local entry_count
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if ! entry_count=$(jq 'length' "$JSON_LOG_FILE" 2>/dev/null); then
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log_error "Could not count entries in JSON log file"
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return 1
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fi
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log_success "JSON log file is valid ($entry_count entries)"
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return 0
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}
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# Check backup file sizes for anomalies
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check_backup_sizes() {
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log_info "Checking backup file sizes..."
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local backup_files=()
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local backup_sizes=()
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local total_size=0
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# Collect backup files and their sizes
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while IFS= read -r backup_file; do
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if [ -f "$backup_file" ] && [ -r "$backup_file" ]; then
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backup_files+=("$backup_file")
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local size=$(stat -f%z "$backup_file" 2>/dev/null || stat -c%s "$backup_file" 2>/dev/null || echo "0")
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backup_sizes+=("$size")
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total_size=$((total_size + size))
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fi
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done < <(find "$BACKUP_ROOT" -maxdepth 1 -type f -name "plex-backup-*.tar.gz" 2>/dev/null | sort)
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if [ ${#backup_files[@]} -eq 0 ]; then
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log_warning "No backup files found for size analysis"
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return 1
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fi
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# Calculate average size
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local avg_size=$((total_size / ${#backup_files[@]}))
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local human_total=$(numfmt --to=iec "$total_size" 2>/dev/null || echo "${total_size} bytes")
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local human_avg=$(numfmt --to=iec "$avg_size" 2>/dev/null || echo "${avg_size} bytes")
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log_info "Total backup size: $human_total"
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log_info "Average backup size: $human_avg"
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# Check for suspiciously small backups (less than 50% of average)
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local min_size=$((avg_size / 2))
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local suspicious_count=0
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for i in "${!backup_files[@]}"; do
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local file="${backup_files[$i]}"
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local size="${backup_sizes[$i]}"
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local filename=$(basename "$file")
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if [ "$size" -lt "$min_size" ] && [ "$size" -gt 0 ]; then
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local human_size=$(numfmt --to=iec "$size" 2>/dev/null || echo "${size} bytes")
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# Extract backup datetime to check if it's a pre-blobs backup
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local backup_datetime=$(echo "$filename" | sed 's/plex-backup-\([0-9]\{8\}_[0-9]\{6\}\)\.tar\.gz/\1/')
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if [[ "$backup_datetime" =~ ^[0-9]{8}_[0-9]{6}$ ]] && [[ "$backup_datetime" < "20250526_144500" ]]; then
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log_info "Small backup (pre-blobs DB): $filename ($human_size)"
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log_info " This backup predates the blobs database introduction, size is expected"
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else
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log_warning "Suspiciously small backup: $filename ($human_size)"
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suspicious_count=$((suspicious_count + 1))
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fi
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fi
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done
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if [ "$suspicious_count" -gt 0 ]; then
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log_warning "Found $suspicious_count backup(s) that may be incomplete"
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return 1
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else
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log_success "All backup sizes appear normal"
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fi
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return 0
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}
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# Check disk space
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check_disk_space() {
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log_info "Checking disk space..."
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local backup_disk_usage=$(du -sh "$BACKUP_ROOT" | cut -f1)
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local available_space=$(df -h "$BACKUP_ROOT" | awk 'NR==2 {print $4}')
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local used_percentage=$(df "$BACKUP_ROOT" | awk 'NR==2 {print $5}' | sed 's/%//')
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log_info "Backup disk usage: $backup_disk_usage"
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log_info "Available space: $available_space"
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log_info "Disk usage: $used_percentage%"
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if [ "$used_percentage" -gt 90 ]; then
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log_error "Disk usage is above 90%"
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return 1
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elif [ "$used_percentage" -gt 80 ]; then
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log_warning "Disk usage is above 80%"
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else
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log_success "Disk usage is acceptable"
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fi
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return 0
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}
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# Generate backup report
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generate_report() {
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log_info "Generating backup report..."
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local total_backups=0
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local valid_backups=0
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local total_errors=0
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# Header
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echo "==================================" >> "$REPORT_FILE"
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echo "Plex Backup Validation Report" >> "$REPORT_FILE"
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echo "Generated: $(date)" >> "$REPORT_FILE"
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echo "==================================" >> "$REPORT_FILE"
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# Use process substitution to avoid subshell variable scope issues
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while IFS= read -r backup_file; do
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total_backups=$((total_backups + 1))
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validate_backup "$backup_file"
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local backup_errors=$?
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if [ "$backup_errors" -eq 0 ]; then
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valid_backups=$((valid_backups + 1))
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else
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total_errors=$((total_errors + backup_errors))
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fi
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done < <(find "$BACKUP_ROOT" -maxdepth 1 -type f -name "plex-backup-*.tar.gz" | sort)
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# Summary
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echo >> "$REPORT_FILE"
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echo "Summary:" >> "$REPORT_FILE"
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echo " Total backups: $total_backups" >> "$REPORT_FILE"
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echo " Valid backups: $valid_backups" >> "$REPORT_FILE"
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echo " Total errors: $total_errors" >> "$REPORT_FILE"
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log_success "Report generated: $REPORT_FILE"
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}
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# Fix common issues
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fix_issues() {
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log_info "Attempting to fix common issues..."
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# Fix JSON log file
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if [ ! -f "$JSON_LOG_FILE" ] || ! jq empty "$JSON_LOG_FILE" 2>/dev/null; then
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log_info "Fixing JSON log file..."
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mkdir -p "$(dirname "$JSON_LOG_FILE")"
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echo "{}" > "$JSON_LOG_FILE"
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log_success "JSON log file created/fixed"
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fi
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# Create corrupted backups directory
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local corrupted_dir="$(dirname "$REPORT_FILE")/corrupted-backups"
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mkdir -p "$corrupted_dir"
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# Check for and move corrupted backup files using process substitution
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local corrupted_count=0
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while IFS= read -r backup_file; do
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if ! tar -tzf "$backup_file" >/dev/null 2>&1; then
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log_warning "Found corrupted backup: $(basename "$backup_file")"
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local backup_name=$(basename "$backup_file")
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local corrupted_backup="$corrupted_dir/$backup_name"
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if mv "$backup_file" "$corrupted_backup"; then
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log_success "Moved corrupted backup to: $corrupted_backup"
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corrupted_count=$((corrupted_count + 1))
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else
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log_error "Failed to move corrupted backup: $backup_name"
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fi
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fi
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done < <(find "$BACKUP_ROOT" -maxdepth 1 -type f -name "plex-backup-*.tar.gz" 2>/dev/null || true)
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if [ "$corrupted_count" -gt 0 ]; then
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log_info "Moved $corrupted_count corrupted backup(s) to $corrupted_dir"
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fi
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# Clean up any remaining dated directories from old backup structure
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find "$BACKUP_ROOT" -maxdepth 1 -type d -name "????????" -exec rm -rf {} \; 2>/dev/null || true
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# Fix permissions if needed
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if [ -d "$BACKUP_ROOT" ]; then
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chmod 755 "$BACKUP_ROOT" 2>/dev/null || log_warning "Could not fix backup root permissions"
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find "$BACKUP_ROOT" -type f -name "plex-backup-*.tar.gz" -exec chmod 644 {} \; 2>/dev/null || log_warning "Could not fix backup file permissions"
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log_success "Fixed backup permissions"
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fi
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}
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# Main function
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main() {
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local fix_mode=false
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local report_mode=false
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local verbose_mode=false
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# Parse arguments
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while [[ $# -gt 0 ]]; do
|
|
case $1 in
|
|
--fix)
|
|
fix_mode=true
|
|
shift
|
|
;;
|
|
--report)
|
|
report_mode=true
|
|
shift
|
|
;;
|
|
--verbose|-v)
|
|
verbose_mode=true
|
|
shift
|
|
;;
|
|
--help|-h)
|
|
echo "Usage: $0 [OPTIONS]"
|
|
echo "Validate Plex backup files and system health"
|
|
echo ""
|
|
echo "OPTIONS:"
|
|
echo " --fix Attempt to fix common issues"
|
|
echo " --report Generate detailed backup report"
|
|
echo " --verbose Enable verbose output"
|
|
echo " --help Show this help message"
|
|
exit 0
|
|
;;
|
|
*)
|
|
echo "Usage: $0 [--fix] [--report] [--verbose]"
|
|
echo " --fix Attempt to fix common issues"
|
|
echo " --report Generate detailed backup report"
|
|
echo " --verbose Enable verbose output"
|
|
echo "Use --help for more information"
|
|
exit 1
|
|
;;
|
|
esac
|
|
done
|
|
|
|
log_info "Starting Plex backup validation..."
|
|
|
|
# Check dependencies first
|
|
if ! check_dependencies; then
|
|
exit 1
|
|
fi
|
|
|
|
# Create logs directory if needed
|
|
mkdir -p "$(dirname "$REPORT_FILE")"
|
|
|
|
local overall_status=0
|
|
local critical_errors=0
|
|
local warnings=0
|
|
|
|
# Fix issues if requested
|
|
if [ "$fix_mode" = true ]; then
|
|
fix_issues
|
|
fi
|
|
|
|
# Validate backup structure
|
|
if ! validate_backup_structure; then
|
|
critical_errors=$((critical_errors + 1))
|
|
fi
|
|
|
|
# Check backup freshness
|
|
if ! check_backup_freshness; then
|
|
local freshness_result=$?
|
|
# Check if this is a "no backups found" error vs "old backup" warning
|
|
local backup_count=$(find "$BACKUP_ROOT" -maxdepth 1 -type f -name "plex-backup-*.tar.gz" 2>/dev/null | wc -l)
|
|
if [ "$backup_count" -eq 0 ]; then
|
|
# No backups found - critical error
|
|
critical_errors=$((critical_errors + 1))
|
|
else
|
|
# Old backup - warning only
|
|
warnings=$((warnings + 1))
|
|
fi
|
|
fi
|
|
|
|
# Validate JSON log
|
|
if ! validate_json_log; then
|
|
critical_errors=$((critical_errors + 1))
|
|
fi
|
|
|
|
# Check disk space
|
|
if ! check_disk_space; then
|
|
warnings=$((warnings + 1))
|
|
fi
|
|
|
|
# Check backup file sizes
|
|
if [ "$verbose_mode" = true ] || [ "$report_mode" = true ]; then
|
|
if ! check_backup_sizes; then
|
|
warnings=$((warnings + 1))
|
|
fi
|
|
fi
|
|
|
|
# Generate detailed report if requested
|
|
if [ "$report_mode" = true ]; then
|
|
generate_report
|
|
fi
|
|
|
|
# Final summary
|
|
echo
|
|
if [ "$critical_errors" -eq 0 ] && [ "$warnings" -eq 0 ]; then
|
|
log_success "All validation checks passed"
|
|
overall_status=0
|
|
elif [ "$critical_errors" -eq 0 ]; then
|
|
log_warning "Validation completed with $warnings warning(s) but no critical errors"
|
|
log_info "System appears healthy despite warnings"
|
|
overall_status=0
|
|
else
|
|
log_error "Validation failed with $critical_errors critical error(s) and $warnings warning(s)"
|
|
overall_status=1
|
|
echo
|
|
echo "Consider running with --fix to attempt automatic repairs"
|
|
echo "Use --report for a detailed backup analysis"
|
|
fi
|
|
|
|
exit $overall_status
|
|
}
|
|
|
|
main "$@"
|