feat: 添加打包日志

backup/backup.sh

@@ -294,10 +294,39 @@ create_archive() {
         return 1
     fi
 
+    # 估算源大小用于显示百分比（失败则只显示已写入字节）
+    local src_kb=0
+    src_kb="$(du -sk "${paths[@]}" 2>/dev/null | awk '{s+=$1} END{print s+0}')"
+    if [[ "$src_kb" -gt 0 ]]; then
+        log "开始打包：$archive（源约 $(awk -v k="$src_kb" 'BEGIN{printf "%.1fG", k/1024/1024}')）"
+    else
         log "开始打包：$archive"
-    local tar_err
-    tar_err="$(tar -czf "$archive" "${paths[@]}" 2>&1)"
+    fi
+
+    local tar_log="${archive}.tar.log"
+    : > "$tar_log"
+    tar -czf "$archive" "${paths[@]}" 2>"$tar_log" &
+    local tar_pid=$!
+
+    local start_ts=$(date +%s) cur_kb pct elapsed
+    while kill -0 "$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 $1+0}')"
+        elapsed=$(( $(date +%s) - start_ts ))
+        if [[ "$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"
+        else
+            log "打包进度：已写入 $(awk -v k="$cur_kb" 'BEGIN{printf "%.2fG", k/1024/1024}')，耗时 ${elapsed}s"
+        fi
+    done
+
+    wait "$tar_pid"
     local rc=$?
+    local tar_err
+    tar_err="$(cat "$tar_log" 2>/dev/null)"
+    rm -f "$tar_log"
     if [[ $rc -ne 0 ]]; then
         err "打包失败 (rc=$rc): $tar_err"
         return 1
@@ -305,7 +334,7 @@ create_archive() {
     if [[ -n "$tar_err" ]]; then
         dbg "tar 输出: $tar_err"
     fi
-    ok "打包完成：$archive ($(du -h "$archive" | awk '{print $1}'))"
+    ok "打包完成：$archive ($(du -h "$archive" | awk '{print $1}'))，总耗时 $(( $(date +%s) - start_ts ))s"
 
     ARCHIVE_FILES=()
     if [[ -n "$COMMON_SPLIT_SIZE" ]]; then