id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
842	PipelineError during backup	francois	warner	"I'm using a fresh darcs checkout as of November 24 with Alberto Berti's
patches for #641 applied.

A 'tahoe backup' run, sometimes crash with the following exception.

{{{
2009-11-24 09:38:21+0100 [Negotiation,client] Unhandled error in Deferred:
2009-11-24 09:38:21+0100 [Negotiation,client] Unhandled Error
        Traceback (most recent call last):
          File ""/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/internet/defer.py"", line 312, in _startRunCallbacks
            self._runCallbacks()
          File ""/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/internet/defer.py"", line 328, in _runCallbacks
            self.result = callback(self.result, *args, **kw)
          File ""/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/internet/defer.py"", line 289, in _continue
            self.unpause()
          File ""/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/internet/defer.py"", line 285, in unpause
            self._runCallbacks()
        --- <exception caught here> ---
          File ""/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/internet/defer.py"", line 328, in _runCallbacks
            self.result = callback(self.result, *args, **kw)
          File ""/root/tahoe/src/allmydata/immutable/encode.py"", line 481, in _remove_shareholder
            level=log.UNUSUAL, failure=why)
          File ""/root/tahoe/src/allmydata/immutable/encode.py"", line 99, in log
            return log.msg(*args, **kwargs)
          File ""/root/tahoe/support/lib/python2.4/site-packages/foolscap-0.4.2-py2.4.egg/foolscap/logging/log.py"", line 197, in msg
            f2.setCopyableState(fs.getStateToCopy(f, FakeBroker))
          File ""/root/tahoe/support/lib/python2.4/site-packages/foolscap-0.4.2-py2.4.egg/foolscap/call.py"", line 796, in getStateToCopy
            state['value'] = str(obj.value) # Exception instance
        exceptions.AttributeError: PipelineError instance has no attribute 'args'
}}}
"	defect	closed	major	1.6.0	code-network	1.5.0	fixed	regression