Thanks, Chris.

We're fronting two Zopes with Pound for load balancing. I can't see
there would be any connection with this error. But I mention it in
case there's a pattern.

Also, the database came from 2.7.0 and an earlier python. This looks
like resource starvation to me. The servers run for an hour or two
this problems shows up, becoming worse for a while, then we need a
restart.

I'm try to debug it tomorrow. What would you look for? Any tips for
resource monitoring?

--r. 

On 22 Jul 2004, at 21:49, Chris McDonough wrote:


<excerpt>I have seen this as well but I haven't been able to pin it
down.


On Thu, 2004-07-22 at 16:16, Russ Ferriday wrote:

<excerpt>Hi all,


On OSX 10.3 (Pahter), Python 2.3.4, Zope 2.7.1, I'm frequently

seeingthis..

2004-07-22T14:00:24 ERROR(200) ZODB Couldn't load state

for00000000000016ad

Traceback (most recent call last):

  File "/usr/local/zope/zope271/lib/python/ZODB/Connection.py",

line559, in setstate

    p, serial = self._storage.load(oid, self._version)

  File "/usr/local/zope/zope271/lib/python/ZEO/ClientStorage.py",

line755, in load

    self._cache.store(oid, p, s, v, pv, sv)

  File "/usr/local/zope/zope271/lib/python/ZEO/ClientCache.py",

line601, in store

    self._store(oid, p, s, version, pv, sv)

  File "/usr/local/zope/zope271/lib/python/ZEO/ClientCache.py",

line631, in _store

    f.seek(self._pos)

AttributeError: 'NoneType' object has no attribute 'seek'


It's intermittent at first, then back-to-back. 


Following thread leads me to look for memory shortage. But I'd expecta

different message in that case.

http://www.mail-archive.com/zope-dev@zope.org/msg15039.html


This thread seems to suggest such messages (in different context)

canbe ignored. But I can't do that. This is a symptom of a bigger

problem.

http://mail.zope.org/pipermail/zope/2001-August/097300.html


Has anyone seen this in these circumstances?

--r.





—————————————————————

Russ Ferriday

Solution Workshops for Plone

(+44) (0) 7789 338868

http://www.solutionworkshops.com


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</excerpt></excerpt>—————————————————————

Russ Ferriday<italic>

</italic><bold>Solution Workshops </bold>for Plone<bold> </bold>

(+44) (0) 7789 338868

http://www.solutionworkshops.com