IOError：设备上没有剩余空间 - 哪个设备？ [英] IOError: No space left on device - which device?
问题描述
当文件完成上传时，服务器会报告：
I'm uploading a small file (8.5 Mb) to a flask test server.
When the file finishes uploading, the server reports:已经查看了 Werkzeug github回购以尝试查找位置Werkzeug试图写信，但不能追查。
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
我也检查了 tempfile.gettempdir（），它将/ var / tmp作为临时文件目录，但是这个文件夹实际上是空的，所以我不认为这是造成问题的位置。
Now, the server has plenty of free space - over 3Gb.
如何找到没有空间的设备？
This unix SE answer explains what happened.
为了防止磁盘空间不足，一些守护进程会自动将阴影 当前/ tmp /目录与ram光盘，如果根分区用光盘空间不足。
As a protection against low disc space, some daemons automatically "shadows" the current /tmp/ dir with a ram disc if the the root partition runs out of disc space. Sadly there's no automatic reversion of that process once enough disc space is free again.
我卸载/ tmp目录并遵循Nitesh的建议：
I unmounted /tmp directory and followed Nitesh's suggestion:
sudo umount /tmp
sudo echo 'MINTMPKB=0' > sudo /etc/default/mountoverflowtmp
现在上传正常。
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