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shelve, segfault and bsddb.db.DBPageNotFoundError: (-30987,

 
 
Gabriel Rossetti
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Posts: n/a
 
      10-14-2009
Hello everyone, I get the following error with the shelve module (python
2.5.2) sometimes :

>>> s = shelve.open("save.dat", writeback=True)
>>> s

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.5/UserDict.py", line 167, in __repr__
return repr(dict(self.iteritems()))
File "/usr/lib/python2.5/UserDict.py", line 105, in iteritems
for k in self:
File "/usr/lib/python2.5/UserDict.py", line 92, in __iter__
for k in self.keys():
File "/usr/lib/python2.5/shelve.py", line 92, in keys
return self.dict.keys()
File "/usr/lib/python2.5/bsddb/__init__.py", line 252, in keys
return _DeadlockWrap(self.db.keys)
File "/usr/lib/python2.5/bsddb/dbutils.py", line 62, in DeadlockWrap
return function(*_args, **_kwargs)
bsddb.db.DBPageNotFoundError: (-30987, 'DB_PAGE_NOTFOUND: Requested page
not found')

This must mean that my file is currupt, correct? If I do the following I
get a segfault :

>>> len(s)

Segmentation fault

Is this a bug? So as a workaround I must do something like this :

s = shelve.open("save.dat", writeback=True)
try:
s.keys()
except bsddb.db.DBPageNotFoundError, e:
os.remove("save.dat")
s = shelve.open("save.dat", writeback=True)

Any other ideas/comments? Does anyone else have this problem?

Thanks,
Gabriel

 
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