Ralph Strauch wrote:I shut down and restarted the iMac, interrupting the ongoing backup. The archive now appears to be unrepairable, ...
Ralph,
What leads you believe the archive is unrepairable?
QRecall has special mechanisms for dealing with exactly this kind of failure, because it's so common. The auto-repair feature should, under normal circumstances, automatically repair an archive that's experienced an interrupted capture or merge, and immediately restore it to its former state. The next action will then proceed as if nothing happened.
If, for some reason, auto-repair didn't fix archive, the repair action should most certainly reconstruct the archive, and preserve most (if not all) of your history. If the repair isn't working, then there's something else that's dreadfully wrong.
Also be aware that there are several issues regarding repair and data redundancy under investigation. If your archive has redundant data, try this:
1) In the Finder, select the archive, right/control+click, and choose "Show Package Contents"
2) Locate the repository.data file.
3) Find all of the repository_*.* companion files. They'll have names like 'repository_p8w8k16m2.0.anvin_reed_sol' and so on.
4) Trash all of the repisitory_*.* companion files, BUT DO NOT trash the 'repository.data' file.
Close the window and try to repair the archive again. Afterwards, send another diagnostic report so I can compare the results.