[rdiff-backup-users] Computed SHA1 digest doesn't match recorded digest

[Daniel Miller]

Recently I got an error message during the verify phase of my backup:

Warning: Computed SHA1 digest of usr/local/pgsql829/data/base/ 
16417/104934
   0520c6624e91386b43c6bdcdaddfb8df0617ec86
doesn't match recorded digest of
   f1629023c48ff184d702ea59d07fdd88f55fad03
Your backup repository may be corrupted!

I have continued to receive the same error on subsequent backup/ 
verify cycles. Lucky for me this file is probably not of critical  
importance -- it is a PostgreSQL system data file (I have a separate  
pgdump archive that would be used to restore the database if needed).

However, I would like to put the repository in a state that does not  
produce this error on verify. How to I recover from this error? Is  
there any way to restore the integrity of my repository?

System details:
Mac OS X Server 10.5.7
rdiff-backup 1.2.8
Python 2.6.2
librsync-0.9.7 (patched with librsync-largefile.patch)
xattr-0.4

~ Daniel