Jim Fulton wrote at 2007-3-21 10:06 -0400: > ... > >On Mar 21, 2007, at 9:59 AM, Tres Seaver wrote: > >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> Jim Fulton wrote: >>> On Mar 21, 2007, at 6:41 AM, Chris Withers wrote: >>> >>>> Hi All, >>>> >>>> Is there any existing method or script for rolling back a ZODB >>>> (filestorage-backed in this case, >>> >>> Back end to what? >>> >>> >>>> if that makes it easier) to a certain point in time? >>> >>> Do you actually want to modify the file? Or do you simply want to >>> access it as of a particular time. >>> There is already a mechanism for opening a file storage as of a >>> particular time. >>> >>> >>>> eg: Make this Data.fs as it was at 9am this morning >>>> >>>> If not, I'll be writing one, where should I add it to when I'm done? [Jim] >>> Before we talk about adding it anywhere, I'd like to see the >>> semantics defined more clearly.
[Tres] >> Chris could: >> >> 1. Open the existing file in time-travel mode (readonly, so that it >> loads no transactions later than the given point). The 'stop' >> parameter to the FileStorage initializer is the one which >> triggers time-travel. >> >> 2. Open a new, writable filestorage. >> >> 3. Run 'copyTransactionsFrom' on the new storage, passing the old, >> and then close the storages. >> >> 4. Restart his Zope with the new storage. [Jim] >I wasn't asking about implementation. [Dieter] But, it is nice to know one (for the rare cases when one has to recover from a catastrophic human error). As such a functionality is only necessary in rare occasions, I think, it need not be sophisticated. -- Dieter _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
