Re: [ZODB-Dev] Versions aren't supported message in Plone 4 upgrade

2010-09-09 Thread Jim Fulton
On Wed, Sep 8, 2010 at 5:28 PM, Mike Hammill m...@kth.se wrote: Just wondering if anyone could point me in the right direction. I'm getting the error: ValueError: Non-zero version length. Versions aren't supported. when trying to bring up a Data.fs from Plone 3.3.1 in Plone 4.0.0.  The

[ZODB-Dev] Stripping version data from databases

2010-09-09 Thread Jim Fulton
I suspect we'll see more cases where people have databases that have versioned records that they don't know how to get rid of. (We had a case like this internally, but we stopped caring about the database in question before we had to deal with it. :) I'd be happy to throw together a script that

[ZODB-Dev] Volunteer opportunity: backport ZEO client cache fixes

2010-09-09 Thread Jim Fulton
If someone wants to help... I made some pretty important ZEO cache fixes recently, in revisions 116233 and 116044 that should make ZEO persistent caches much more reliable. It would be good to back port these at least to ZODB 3.9, and maybe 3.8. They are tested by the test

Re: [ZODB-Dev] _p_invalidate

2010-09-09 Thread Jim Fulton
On Mon, Jun 21, 2010 at 6:00 AM, Nitro ni...@dr-code.org wrote: Am 21.06.2010, 11:55 Uhr, schrieb Nitro ni...@dr-code.org: Hello, The simple code below gives me a POSKeyError. Is this to be expected? No. Searched the bugtracker, it looks pretty much like this issue:

Re: [ZODB-Dev] Volunteer opportunity: backport ZEO client cache fixes

2010-09-09 Thread Nikolay Kim
i'm willing to do this. If someone wants to help... I made some pretty important ZEO cache fixes recently, in revisions 116233 and 116044 that should make ZEO persistent caches much more reliable. It would be good to back port these at least to ZODB 3.9, and maybe 3.8. They are tested

Re: [ZODB-Dev] Volunteer opportunity: backport ZEO client cache fixes

2010-09-09 Thread Jim Fulton
On Thu, Sep 9, 2010 at 1:07 PM, Nikolay Kim fafhr...@gmail.com wrote: i'm willing to do this. Great! You should hold off a bit. An internal buildbot here just reported an error in a test that indicates there's still an issue. I need to investigate. :( Jim -- Jim Fulton

Re: [ZODB-Dev] Stripping version data from databases

2010-09-09 Thread Mike Hammill
Jim, I would definitely be willing to test it! Since it's a production site, I'm a bit frightened to switch to Plone 4 until something like this gets tested by others too, but I can do any amount of testing you would like. Regards, /Mike On 09/09/2010 04:10 PM, Jim Fulton wrote: I suspect

Re: [ZODB-Dev] Versions aren't supported message in Plone 4 upgrade

2010-09-09 Thread David Glick
On 9/9/10 3:28 PM, Mike Hammill wrote: David, I seem to recall from somewhere that using Data.fs was in some sense more complete, or more supported, or more something from some old migration guide, so I was shying away from doing an export/import. Also there is the time involved in