chore: 优化显示

backup/backup.sh

@@ -308,17 +308,18 @@ create_archive() {
     tar -czf "$archive" "${paths[@]}" 2>"$tar_log" &
     local tar_pid=$!
 
-    local start_ts=$(date +%s) cur_kb pct elapsed
+    local start_ts=$(date +%s) cur_kb elapsed
     while kill -0 "$tar_pid" 2>/dev/null; do
         sleep 5
         kill -0 "$tar_pid" 2>/dev/null || break
         cur_kb="$(du -k "$archive" 2>/dev/null | awk '{print $1+0}')"
         elapsed=$(( $(date +%s) - start_ts ))
+        # 注意：cur_kb 是压缩后归档大小，src_kb 是未压缩的源大小，
+        # 二者不在同一量纲，故不显示百分比，只展示两个数字作为参考。
         if [[ "$src_kb" -gt 0 ]]; then
-            pct=$(awk -v c="$cur_kb" -v s="$src_kb" 'BEGIN{p=c*100/s; if(p>99)p=99; printf "%.0f", p}')
-            log "打包进度：已写入 $(awk -v k="$cur_kb" 'BEGIN{printf "%.2fG", k/1024/1024}') / $(awk -v k="$src_kb" 'BEGIN{printf "%.2fG", k/1024/1024}') (${pct}%)，耗时 ${elapsed}s"
+            log "打包进度：已写入 $(awk -v k="$cur_kb" 'BEGIN{printf "%.2fG", k/1024/1024}')（压缩后）/ 源约 $(awk -v k="$src_kb" 'BEGIN{printf "%.2fG", k/1024/1024}')，耗时 ${elapsed}s"
         else
-            log "打包进度：已写入 $(awk -v k="$cur_kb" 'BEGIN{printf "%.2fG", k/1024/1024}')，耗时 ${elapsed}s"
+            log "打包进度：已写入 $(awk -v k="$cur_kb" 'BEGIN{printf "%.2fG", k/1024/1024}'),耗时 ${elapsed}s"
         fi
     done