id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
736	UnrecoverableFileError on directory which has 6 shares (3 needed)	zooko	zooko	"When I view this private directory of mine, I get:

{{{
Error reading directory:

UnrecoverableFileError: the directory (or mutable file) could not be retrieved, because there were insufficient good shares. This might indicate that no servers were connected, insufficient servers were connected, the URI was corrupt, or that shares have been lost due to server departure, hard drive failure, or disk corruption. You should perform a filecheck on this object to learn more.
No upload forms: directory is unreadable
}}}

But when I run check (with or without verify) on it, I get:

{{{
{
 ""results"": {
  ""needs-rebalancing"": true, 
  ""count-shares-expected"": 10, 
  ""healthy"": false, 
  ""count-unrecoverable-versions"": 0, 
  ""count-shares-needed"": 3, 
  ""sharemap"": {
   ""seq29-5gk3-sh9"": [
    ""ivjakubrruewknqg7wgb5hbinasqupj6""
   ], 
   ""seq29-5gk3-sh8"": [
    ""xiktf6ok5f5ao5znxxttriv233hmvi4v""
   ], 
   ""seq29-5gk3-sh7"": [
    ""wfninubkrvhlyscum7rlschbhx5iarg3""
   ], 
   ""seq29-5gk3-sh4"": [
    ""xiktf6ok5f5ao5znxxttriv233hmvi4v""
   ], 
   ""seq29-5gk3-sh3"": [
    ""trjdor3okozw4eld3l6zl4ap4z6h5tk6""
   ], 
   ""seq29-5gk3-sh1"": [
    ""jfdpabh34vsrhll3lbdn3v23vem4hr2z""
   ]
  }, 
  ""count-recoverable-versions"": 1, 
  ""servers-responding"": [
   ""xiktf6ok5f5ao5znxxttriv233hmvi4v"", 
   ""wfninubkrvhlyscum7rlschbhx5iarg3"", 
   ""trjdor3okozw4eld3l6zl4ap4z6h5tk6"", 
   ""jfdpabh34vsrhll3lbdn3v23vem4hr2z"", 
   ""ivjakubrruewknqg7wgb5hbinasqupj6""
  ], 
  ""count-good-share-hosts"": 5, 
  ""count-wrong-shares"": 0, 
  ""count-shares-good"": 6, 
  ""count-corrupt-shares"": 0, 
  ""list-corrupt-shares"": [], 
  ""recoverable"": true
 }, 
 ""storage-index"": ""iy5ilio6pjeehciu6idw4jzp6e"", 
 ""summary"": ""Unhealthy: 6 shares (enc 3-of-10)""
}
}}}

This may be related to #732 (Not Enough Shares when repairing a file which has 7 shares on 2 servers).

Hm, my {{{twistd.log}}} ends with: 

{{{
2009-06-14 14:06:52-0600 [Negotiation,client] Unhandled error in Deferred:
2009-06-14 14:06:52-0600 [Negotiation,client] Unhandled Error
        Traceback (most recent call last):
          File ""/Users/wonwinmcbrootles/playground/allmydata/tahoe/trunk/trunk/support/lib/python2.5/site-packages/foolscap-0.4.1-py2.5.egg/foolscap/call.py"", line 669, in _don
e
            self.request.complete(res)
          File ""/Users/wonwinmcbrootles/playground/allmydata/tahoe/trunk/trunk/support/lib/python2.5/site-packages/foolscap-0.4.1-py2.5.egg/foolscap/call.py"", line 55, in compl
ete
            self.deferred.callback(res)
          File ""/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Twisted-8.2.0-py2.5-macosx-10.3-i386.egg/twisted/internet/defer.py"", line 243, in 
callback
            self._startRunCallbacks(result)
          File ""/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Twisted-8.2.0-py2.5-macosx-10.3-i386.egg/twisted/internet/defer.py"", line 312, in 
_startRunCallbacks
            self._runCallbacks()
        --- <exception caught here> ---
          File ""/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Twisted-8.2.0-py2.5-macosx-10.3-i386.egg/twisted/internet/defer.py"", line 328, in 
_runCallbacks
            self.result = callback(self.result, *args, **kw)
          File ""/Users/wonwinmcbrootles/playground/allmydata/tahoe/trunk/trunk/src/allmydata/introducer/client.py"", line 92, in _got_versioned_service
            self._ic.add_connection(self._nodeid, self.service_name, rref)
          File ""/Users/wonwinmcbrootles/playground/allmydata/tahoe/trunk/trunk/src/allmydata/introducer/client.py"", line 270, in add_connection
            rsc.reset()
          File ""/Users/wonwinmcbrootles/playground/allmydata/tahoe/trunk/trunk/src/allmydata/introducer/client.py"", line 105, in reset
            self._reconnector.reset()
        exceptions.AttributeError: RemoteServiceConnector instance has no attribute '_reconnector'
}}}

That looks like it is related to http://foolscap.lothar.com/trac/ticket/129 (zero-length location hints cause getReference() to fail synchronously).
"	defect	closed	major	1.5.0	code	1.4.1	fixed	foolscap