为什么单个修订版的SVN转储大于完整转储? [英] Why is a SVN dump of a single revision larger than a full dump?

问题描述

我的存储库是2.5G.通过svnadmin dump myrepos > dumpfile进行的转储为5G.但是当我像 svnadmin dump myrepos -r 23785 > rev-23785.dumpfile 23785是最早的修订版，转储超过15G，这时我停止了转储.

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.

仅请求一个版本的转储时，为什么结果远大于整个转储?

When requesting a dump for just the one revision, why is the result far larger than the entire dump?

推荐答案

此页面说明: http://linuxtopia.org/online_books/programming_tool_guides/version_control_with_subversion/svn. reposadmin.maint_8.html

为了确保svnadmin dump每次执行的输出都是自给自足的，默认情况下，第一个转储的修订版是存储库修订版中每个目录，文件和属性的完整表示.

"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.

但是，您可以更改此默认行为.如果您添加--incremental选项"

However, you can change this default behavior. If you add the --incremental option"

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