[Zope] Re: Data loss after packing in Zope 2.6.1?

[Jeremy Hylton]

There are several bugs in the pack implementation in Zope 2.6.1, some of
which could cause data loss.  I fixex these bugs a couple of weeks ago,
and sent a status report to the zodb-dev mailing list.  I should have
reported the resolution more widely, because the possibility for data
loss is of interest to wider audience than reads the developer list.

The technical summary I posted on zodb-dev is here:
http://mail.zope.org/pipermail/zodb-dev/2003-May/004945.html

The long and short of it is that we have a better test suite that
provoked the known bugs in 2.6.1 pack.  And we have a new pack
implementation that fixes all those bugs.

I had originally planned to leave Zope 2.6.x as it is, because the
changes involved in the new pack are fairly significant and we only had
one or two isolated reports of problems.  Since several more people have
reported problems, we've decided to add the new pack implementation to
the Zope 2.6 release branch.

We need people to test this code!  If you have had problems with pack
recently, it would be really helpful if you could run the new code on
your database and verify that it fixes your specific problem.

Jeremy