svnadmin verify 1.8.5 errors on old repositories

I've observed 3 instances of similar errors when using the 1.8.5 svnadmin
verify on 3 different old repositories. (the hundreds of other repos on
this server verified in 1.8.5 without problems.)

svnadmin: E160004: r97's root node's predecessor is r90 but should be r96
svnadmin: E160004: r502's root node's predecessor is r483 but should be
r501
svnadmin: E160004: r22033's root node's predecessor is r22031 but should
be r22032

All 3 of these repositories verify without errors using 1.7.5. All 3 of
the
revisions are from different months in 2009, when I assume the server was
running 1.6.something. The repositories were "upgraded", but not a full
dump/load between major version upgrades.

svn 1.8.5 can serve the existing repositories without any observed errors.
I can use a 1.8.5 svnsync to a new repository which then verifies without
errors.

Is this just a case of svnadmin verify in 1.8.5 being too conservative
and should be issuing a warning instead?

All 3 repositories are quite large (over 200GB each) and have the same
fsfs format:

cat format
  5
cat db/format
  4
  layout linear

Obviously I could "fix" the error by doing a full dump/load cycle, but
I'm interested in figuring out more about the cause.

I can't provide the repo due to size and content, but I'm happy to dig
around some of the files for more information.

Also, on a slightly related note, why does the new svnadmin verify
medatadata portion not always start at r0 or even show consecutive
revision numbers on repositories with large numbers of revisions?

Thanks!
Kevin
Received on 2014-01-09 23:49:09 CET