我正在将一个小文件（8.5 Mb）上传到烧瓶测试服务器。

文件上传完成后，服务器报告：

    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/wtforms/form.py", 
        line 212, in __call__
    return type.__call__(cls, *args, **kwargs)
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/flask_wtf/form.py", line 49, in __init__
        formdata = request.form
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/local.py", 
        line 338, in __getattr__
    return getattr(self._get_current_object(), name)
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/utils.py", 
         line 71, in __get__
    value = self.func(obj)
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/wrappers.py", 
         line 484, in form
    self._load_form_data()
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/flask/wrappers.py", 
        line 165, in _load_form_data
    RequestBase._load_form_data(self)
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/wrappers.py", 
        line 356, in _load_form_data
    mimetype, content_length, options)
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/formparser.py", 
        line 193, in parse
    content_length, options)
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/formparser.py",
        line 99, in wrapper
    return f(self, stream, *args, **kwargs)
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/formparser.py",
        line 210, in _parse_multipart
    form, files = parser.parse(stream, boundary, content_length)
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/formparser.py", 
        line 520, in parse
    return self.cls(form), self.cls(files)
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/datastructures.py", 
        line 373, in __init__
    for key, value in mapping or ():
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/formparser.py", 
        line 518, in <genexpr>
    form = (p[1] for p in formstream if p[0] == 'form')
    File "/home/ubuntu/.virtualenvs/eco_app/lib/python2.7/site-packages/werkzeug/formparser.py", 
        line 494, in parse_parts
        _write(ell)
IOError: [Errno 28] No space left on device

现在，服务器具有足够的可用空间-超过3Gb。

我查看了Werkzeug github存储库，以查找Werkzeug尝试写入的位置，但无法对其进行跟踪。

我还检查了tempfile.gettempdir（），该文件将/ var / tmp用作临时文件目录，但是该文件夹实际上是空的，因此我不认为这是造成此问题的位置。