My repository is 2.5G. A dump via svnadmin dump myrepos > dumpfile
is 5G. But when I do a dump like
svnadmin dump myrepos -r 23785 > rev-23785.dumpfile
where 23785 is the youngest revision the dump goes beyond 15G and at that point I stop the dump.
When requesting a dump for just the one revision, why is the result far larger than the entire dump?
This page explains: http://linuxtopia.org/online_books/programming_tool_guides/version_control_with_subversion/svn.reposadmin.maint_8.html
"To ensure that the output of each execution of svnadmin dump is self-sufficient, the first dumped revision is by default a full representation of every directory, file, and property in that revision of the repository.
However, you can change this default behavior. If you add the --incremental option"
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