[Fedora-directory-devel] Please Review: (304191) dbscan doesn't handle RUV entries in changelog db

[Nathan Kinder]

https://bugzilla.redhat.com/show_bug.cgi?id=304191
Resolves: bug 304191
Bug Description: If you try to run the dbscan tool against a changelog
  db on a stopped server, it reports the an error similar to:

    dbid: 0000006f000000000000
    Invalid changelog db version 1
    Works for version 5 only.

Reviewed by: ???
Files: see diff
Branch: HEAD
Fix Description: The print_changelog function in dbscan.c expects all 
entries to
  have 0x05 as the first byte, which signifies the changelog version.  
This version
  check should be done for all change entries in the changelog db, but 
there are
  three special entries that are in the beginning of the changelog where 
this doesn't
  apply.  These entries are an entry count, the purge RUV, and the max RUV.

  It should be noted that these entries are not always present when the 
server is
  running, so dbscan will often work fine against a running server.  
When the
  server is stopped gracefully, these entries are flushed out to be used 
once the
  server is restarted.

  The attached diffs make dbscan check for these special entries when 
reading
  through a changelog.  If it encounters one of these entries, it will 
print out
  the data in a nice usable format.
Platforms tested: FC6 i386
Flag Day: no
Doc impact: no
QA impact: Need to add new tests
New Tests integrated into TET: none
https://bugzilla.redhat.com/attachment.cgi?id=204611&action=diff