[Zope] VersionLockError ???

[Gilles Lenfant]

----- Original Message -----
From: "Dieter Maurer" <dieter at handshake.de>
To: "Gilles Lenfant" <gilles at pilotsystems.net>
Cc: <zope at zope.org>
Sent: Wednesday, October 22, 2003 7:26 PM
Subject: Re: [Zope] VersionLockError ???


> Gilles Lenfant wrote at 2003-10-22 15:00 +0200:
>  > > If you are unlucky, your ZODB is corrupted and it might be difficult
>  > > to get rid of these errors again.
>  >
>  > Seems that it's the case...
>  > I made a new Zope 2.6.2 instance, with the same products, then copied
the
>  > Data.fs to that new instance. That new instance refuses to start :
raising
>  > the same exception, then stopping (panic mode).
>  >
>  > Do you think that starting a new Zope 2.6.2 instance with the same
products
>  > and a virgin Data.fs then exporting/importing all folders at root as
zexps
>  > would fix this ?
>
> When you are able to export (you probably are) you will come a good
> step forward.
>
> However, you will nevertheless have some inconsistency.
>
> The Zope 2.6.1 Version bug has been that only a single object
> was moved from the Version to the non-Version state when you
> committed the Version. All other objects in the Version
> remained (partly) in the Version (and continued to be locked).
>
> When you export, you will get the (new) object moved from the
> Version but all other objects modified in the Version will
> be exported in their unmodified state.
>
> I do not expect that this will be a big problem.
> However, depending on what you changed in the version,
> this may be wrong.
> Whether it is a problem can already be seen in your current Zope setup.
> The inconsistency already exists there (with the additional
> locks for objects modified in the Version).
>
>
>  > $ python utilities/ZODBTools/fstest.py -v var/Data.fs
>  > ...
>  > var/Data.fs truncated possibly because of damaged records at 1117825536
>  >
>  > But I dunno how to fix this...
>
> This problem will be fixed by "fsrecover".
> But, do not use the 2.6.1 version (it is broken).
> Use the 2.6.2 version.

Many thanks Dieter.

Gonne make the export/import in a brand new 2.6.2 instance cause the
fsrecover said it fixed but running then Zope always mentions the lock
problem.

--Gilles