[Zope] File system operation rollback

[nwingfield at che-llp.com]

I have a Zope product containing several classes.  Certain methods of these
classes invoke file system operations, almost exclusively deletes and
renames.  Has anyone developed a good strategy to roll back file system
operations in the same way that ZODB and SQL transactions roll back in the
event of an error?  My file system gets out of sync quite frequently, so I
would appreciate any ideas.