OperationalError: disk I/O error

[admin]

How to Reproduce

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

(please provide additional details here)

Request parameters:

{}

User agent: #USER_AGENT#

System Information

Trac	1.0
Babel	0.9.6
Docutils	0.7
Genshi	0.6 (without speedups)
mod_python	3.3.1
Pygments	1.4
pysqlite	2.6.3
Python	2.7.2+ (default, Jul 20 2012, 22:32:25) [GCC 4.6.1]
pytz	2010b
setuptools	0.6
SQLite	3.7.7
jQuery	#JQUERY#

Enabled Plugins

Python Traceback

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 497, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 234, in dispatch
    req.send(output, content_type or 'text/html')
  File "/usr/local/lib/python2.7/dist-packages/trac/web/api.py", line 478, in send
    self.send_response(status)
  File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 79, in send_response
    self.session.save()
  File "/usr/local/lib/python2.7/dist-packages/trac/web/session.py", line 145, in save
    """, (self.sid, authenticated))
  File "/usr/local/lib/python2.7/dist-packages/trac/db/util.py", line 121, in execute
    cursor.execute(query, params)
  File "/usr/local/lib/python2.7/dist-packages/trac/db/util.py", line 65, in execute
    return self.cursor.execute(sql_escape_percent(sql), args)
  File "/usr/local/lib/python2.7/dist-packages/trac/db/sqlite_backend.py", line 78, in execute
    result = PyFormatCursor.execute(self, *args)
  File "/usr/local/lib/python2.7/dist-packages/trac/db/sqlite_backend.py", line 56, in execute
    args or [])
  File "/usr/local/lib/python2.7/dist-packages/trac/db/sqlite_backend.py", line 48, in _rollback_on_error
    return function(self, *args, **kwargs)
OperationalError: disk I/O error

[Jun Omae]

MaintenanceIssue.