On Aug 17, 2006, at 7:52 PM, Andrew Price wrote:

I've recently become the maintainer of a backup tool package which uses
rdiff-backup. In acquainting myself with the package I've noticed that
this read-only filesystem bug is pretty much a brick wall when it comes
to backing up to CD-ROMs.

I appreciate that this problem hasn't been solved in rdiff-backup yet
but I was wondering if there are any safe workarounds for it. To be
honest I was surprised there isn't a switch to turn off the logging to
restore.log like --restore-read-only. But from reading this thread I
guess the problem is more complicated to solve than that. Any pointers
to workarounds would be most appreciated.

How about something like a "union file system". You mount the read- only version to a UFS. Any changes including restore.log would get logged to the writable branch of the UFS. When you're done, remove the UFS without writing the changes.

-Kurt



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