OperationalError: disk I/O error

[zxy]

How to Reproduce

While doing a GET operation on , Trac issued an internal error.

(please provide additional details here)

System Information

Trac	0.11.7
Python	2.6.5 (r265:79063, Oct 1 2012, 22:19:00) [GCC 4.4.3]
setuptools	0.6
SQLite	3.6.22
pysqlite	2.4.1
Genshi	0.5.1
mod_python	3.3.1
Pygments	1.2.2
Subversion	1.6.6 (r40053)

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/trac/web/main.py", line 450, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.6/dist-packages/trac/web/main.py", line 229, in dispatch
    req.session.save()
  File "/usr/lib/python2.6/dist-packages/trac/web/session.py", line 129, in save
    (self.last_visit, self.sid, authenticated))
  File "/usr/lib/python2.6/dist-packages/trac/db/util.py", line 64, in execute
    return self.cursor.execute(sql_escape_percent(sql), args)
  File "/usr/lib/python2.6/dist-packages/trac/db/sqlite_backend.py", line 80, in execute
    result = PyFormatCursor.execute(self, *args)
  File "/usr/lib/python2.6/dist-packages/trac/db/sqlite_backend.py", line 59, in execute
    args or [])
  File "/usr/lib/python2.6/dist-packages/trac/db/sqlite_backend.py", line 51, in _rollback_on_error
    return function(self, *args, **kwargs)
OperationalError: disk I/O error

[Jun Omae]

This is a MaintenanceIssue.