flipped-aurora/gin-vue-admin · error

写入临时文件失败: %w

Error message

写入临时文件失败: %w

What it means

After writing content to the temp file, replaceAutoCodeFileAtomically finalizes write+Sync+Close; any error in that sequence is reported as 写入临时文件失败 wrapping the underlying cause. This catches short writes, I/O errors during fsync, and close-time errors that only surface flushed data failures.

Source

Thrown at server/service/system/auto_code_task.go:280

	}
	dir := filepath.Dir(target)
	if err := os.MkdirAll(dir, 0o755); err != nil {
		return fmt.Errorf("创建目标目录 %s 失败: %w", dir, err)
	}
	tmp, err := os.CreateTemp(dir, ".autocode-*")
	if err != nil {
		return fmt.Errorf("创建临时文件失败: %w", err)
	}
	tmpName := tmp.Name()
	defer os.Remove(tmpName)
	if _, err = tmp.Write(content); err == nil {
		err = tmp.Sync()
	}
	if closeErr := tmp.Close(); err == nil {
		err = closeErr
	}
	if err != nil {
		return fmt.Errorf("写入临时文件失败: %w", err)
	}
	if err = os.Chmod(tmpName, mode.Perm()); err != nil {
		return fmt.Errorf("设置临时文件权限失败: %w", err)
	}
	if err = os.Rename(tmpName, target); err != nil {
		return fmt.Errorf("原子替换 %s 失败: %w", target, err)
	}
	return nil
}

func (l autoCodeTaskLayout) classify(target string) (string, error) {
	if isPathWithin(l.serverRoot, target) {
		return autoCodeTaskBackend, nil
	}
	if isPathWithin(l.webRoot, target) {
		return autoCodeTaskFrontend, nil
	}
	return "", fmt.Errorf("自动代码目标不在服务端或前端目录内: %s", target)

View on GitHub (pinned to 3136500ef3)

Solutions

1. Check the wrapped cause: ENOSPC → free disk space; EIO → check dmesg/storage health
2. Sync/flush or temporarily exclude project dirs from cloud-sync/network filesystems (NFS, Dropbox) that break fsync
3. Retry generation once space/storage is healthy; staging copies make retries safe

Example fix

// before
$ df -h /var/www/project  →  100% used
// after
$ df -h /var/www/project  →  42% used  # after cleanup, retry generation

if free, err := diskFree(dir); err == nil && free < 64*1024*1024 {
    return fmt.Errorf("insufficient space for generation: %d bytes free", free)
}

err := commitAutoCodeFileTask(task, publish, persist)
if err != nil && strings.Contains(err.Error(), "写入临时文件失败") {
    var perr *fs.PathError
    if errors.As(err, &perr) && errors.Is(perr.Err, syscall.ENOSPC) {
        log.Print("disk full — free space and retry")
    }
    if errors.Is(err, syscall.EIO) {
        log.Print("I/O error — check storage health (dmesg)")
    }
}

When it happens

Trigger: tmp.Write(content) returns n < len(content) or an error, tmp.Sync() fails (I/O error, ENOSPC), or tmp.Close() returns an error — all normalized into this single wrapped error.

Common situations: Disk full mid-write, network/cloud-sync filesystems failing fsync, container storage driver errors, or hardware I/O failures on the underlying volume.

Related errors

• function io.Copy() failed, err:
• 读取自动代码目标 %s 失败: %w
• 恢复自动代码文件 %s 失败: %w
• 创建临时文件失败: %w
• 原子替换 %s 失败: %w

AI-assisted analysis of flipped-aurora/gin-vue-admin@3136500ef3 (2026-08-31). Data as JSON: /api/errors/82a40f66f58dbfb0. Report an issue: GitHub.