概要

svnadmin dump REPOS_PATH [-r LOWER[:UPPER]] [--incremental]

描述

使用“dumpfile”可移植格式将文件系统的内容转储到标准输出，将反馈发送到标准错误，导出的修订版本从LOWER到UPPER。如果没有提供修订版本，会导出所有的修订版本树，如果只提供LOWER，导出一个修订版本树，通常的用法见“版本库数据的移植”一节。

By default, the Subversion dumpfile stream contains a single revision (the first revision in the requested revision range) in which every file and directory in the repository in that revision is presented as if that whole tree was added at once, followed by other revisions (the remainder of the revisions in the requested range), which contain only the files and directories that were modified in those revisions. For a modified file, the complete fulltext representation of its contents, as well as all of its properties, are presented in the dumpfile; for a directory, all of its properties are presented.

There are two useful options that modify the dumpfile generator's behavior. The first is the --incremental option, which simply causes that first revision in the dumpfile stream to contain only the files and directories modified in that revision, instead of being presented as the addition of a new tree, and in exactly the same way that every other revision in the dumpfile is presented. This is useful for generating a relatively small dumpfile to be loaded into another repository that already has the files and directories that exist in the original repository.

The second useful option is --deltas. This option causes svnadmin dump to, instead of emitting fulltext representations of file contents and property lists, emit only deltas of those items against their previous versions. This reduces (in some cases, drastically) the size of the dumpfile that svnadmin dump creates. There are, however, disadvantages to using this option—deltified dumpfiles are more CPU-intensive to create, cannot be operated on by svndumpfilter, and tend not to compress as well as their nondeltified counterparts when using third-party tools such as gzip and bzip2.

选项

--revision (-r) REV
--incremental
--quiet (-q)
--deltas

例子

转储整个版本库：

$ svnadmin dump /var/svn/repos
SVN-fs-dump-format-version: 1
Revision-number: 0
* Dumped revision 0.
Prop-content-length: 56
Content-length: 56
…

从版本库增量转储一个单独的事务：

$ svnadmin dump /var/svn/repos -r 21 --incremental 
* Dumped revision 21.
SVN-fs-dump-format-version: 1
Revision-number: 21
Prop-content-length: 101
Content-length: 101
…