哎，当了这么几年的运维，心情急躁了，犯了个小小错误，强制重启了一台运行的服务器，重启后访问seafile云盘的时候，解决报错如下：

Traceback (most recent call last):
File "/home/haiwen/seafile-server-5.1.2/seahub/thirdpart/Django-1.8.10-py2.7.egg/django/core/handlers/base.py", line 108, in get_response
response = middleware_method(request)
File "/home/haiwen/seafile-server-5.1.2/seahub/seahub/base/middleware.py", line 64, in process_request
cur_note = cache.get('CUR_TOPINFO') if cache.get('CUR_TOPINFO') else \
File "/home/haiwen/seafile-server-5.1.2/seahub/thirdpart/Django-1.8.10-py2.7.egg/django/core/cache/backends/filebased.py", line 41, in get
if not self.isexpired(f):
File "/home/haiwen/seafile-server-5.1.2/seahub/thirdpart/Django-1.8.10-py2.7.egg/django/core/cache/backends/filebased.py", line 138, in isexpired
exp = pickle.load(f)
EOFError
2016-06-08 08:47:20,003 [ERROR] django.request:256 handle_uncaught_exception Internal Server Error: /cgi-bin/common/attr
Traceback (most recent call last):
File "/home/haiwen/seafile-server-5.1.2/seahub/thirdpart/Django-1.8.10-py2.7.egg/django/core/handlers/base.py", line 108, in get_response
response = middleware_method(request)
File "/home/haiwen/seafile-server-5.1.2/seahub/seahub/base/middleware.py", line 64, in process_request
cur_note = cache.get('CUR_TOPINFO') if cache.get('CUR_TOPINFO') else \
File "/home/haiwen/seafile-server-5.1.2/seahub/thirdpart/Django-1.8.10-py2.7.egg/django/core/cache/backends/filebased.py", line 41, in get
if not self.isexpired(f):
File "/home/haiwen/seafile-server-5.1.2/seahub/thirdpart/Django-1.8.10-py2.7.egg/django/core/cache/backends/filebased.py", line 138, in isexpired
exp = pickle.load(f)

解决方法：

清理缓存即可：

rm -rf /tmp/seahub_cache/*