SF上SCM从CVS到SVN的迁移

http://www.trydofor.com/a9w3-auhome/trydofor/article/2009/0313170649/body.htm

SF上SCM从CVS到SVN的迁移
^^^^^^^^^^^^^^^^^^^^^^^
- 作者：臭豆腐[trydofor.com]
- 日期：2009-03-13
- 授权：署名-非商业-保持一致 1.0 协议
- 声明：拷贝、分发、呈现和表演本作品，请保留以上全部信息。

0. 文档目录
^^^^^^^^^^
[[<=$INDEX]]

1. 事情的起因
^^^^^^^^^^^^^
2009-03-11 发现在eclipse下不能提交a9w3的变更到CVS了.
经过半个多小时的调查和确认,最终只好请sf帮忙解决了.
并且很快得到了sf的认真回复.(考虑到时差原因)

========================= txt : CVS错误信息 =============================
The server reported an error while performing the "cvs update" command.
  a9w3: cvs update: failed to create lock directory for
  `/cvsroot/a9w3/a9w3/a9w3-engine'
  (/cvsroot/a9w3/a9w3/a9w3-engine/#cvs.lock): Read-only file system
  a9w3: cvs update: failed to obtain dir lock in repository
  `/cvsroot/a9w3/a9w3/a9w3-engine'
  a9w3: cvs [update aborted]: read lock failed - giving up
=========================================================================

======================= txt : 原来服务器Down了 ==========================
CVS repositories that begin with the letters (a  e  h  i m o r w z) are
experiencing unplanned downtime since 2009-03-10 18:00 UTC. 
SourceForge.net staff are actively working to resolve the issue and
anticipate having the service returned sometime in the next 2 days.
Questions or concerns may be directed to us by Support Request.
=========================================================================

11号,项目发布,很忙,很晚,没理会sf这事,等着回复吧.
13号,发现sf可以提交了,但仅限于commit已有的文件,新增目录不好用.
======================= txt : 不能新增目录 ==========================
The server reported an error while performing the "cvs commit" command.
  a9w3: cvs commit: failed to create lock directory for
  `/cvsroot/a9w3/a9w3-user/trydofor/article/2009/0310140935'
  (/cvsroot/a9w3/a9w3-user/trydofor/article/2009/0310140935/#cvs.lock):
  No such file or directory
  a9w3: cvs commit: lock failed - giving up
  a9w3: cvs [commit aborted]: lock failed - giving up
=========================================================================

然后认真读了sf的 "Support Requests item #2681120",还未完全恢复,
建议使用其他SCM(Source Control Manager).

======================= txt : 建议使用其他SCM ==========================
CVS service has now been restored to all projects. Thank you for baring
with us. Again, we suggest you switch to an alternate SCM offering if
your project would prefer less downtime. We made all efforts to minimize
the downtime but limitations in CVS design keep us from making it as
resilient as the other 4 SCMs in our offering.
=========================================================================

一开始没注意 "other 4 SCMs" 一直以为只有cvs和svn呢,上去一看才知道,还有
  * Bazaar, GPL的,Python写的,分散式的,Ubuntu这家公司资助的.
  * Git, Linux内核开发用的,傻瓜内容跟踪器。Linus 是这样介绍Git的.
  * Mercurial, Mozilla在使用Mercurial(hg),主体部分是用Python写的.
真是孤陋寡闻了,最后决定使用比较流行的SVN吧,因为,
  * svn比较熟,code.google也在用.
  * eclipse和tortoise,这2个工具使用的挺顺手.
  * sf上能直接把cvs的库导到svn去(没注意看其他SCM).

最后,真的对sf的服务速度,质量,态度,打个"非常满意"的评价.
我时常怀着一种感激之心,来读/用/写软件,当然用微软盗版,也在精神上感激了很多人

2. CVS 转 SVN
^^^^^^^^^^^^^
按照 sf 的以下手册,一步一步进行.
http://apps.sourceforge.net/trac/sourceforge/wiki/Subversion%20import%20instructions
============================== tty : putty ==============================
# sf 的手册写的很好,使用putty需要登陆2次.
# 第一次执行create,然后自动推出,第二次正常登陆,就可以使用 shell了.

# 下载 cvs2svn http://cvs2svn.tigris.org
wget http://cvs2svn.tigris.org/files/documents/1462/44372/cvs2svn-2.2.0.tar.gz
tar -xzf cvs2svn-2.2.0.tar.gz
mkdir cvsrepo
ll
>lrwxrwxrwx  1 trydofor a9w3      31 Dec 12 09:32 a9text_htdocs -> /home/groups/a/a9/a9text/htdocs
>lrwxrwxrwx  1 trydofor a9w3      29 Dec 12 09:30 a9w3_htdocs -> /home/groups/a/a9/a9w3/htdocs
>drwxrwxr-x 11 trydofor a9w3    1024 Mar 13 05:40 cvs2svn-2.2.0
>-rw-rw-r--  1 trydofor a9w3  411531 Nov 23 08:15 cvs2svn-2.2.0.tar.gz
>drwxrwxr-x  2 trydofor a9w3      80 Mar 13 05:41 cvsrepo
>lrwxrwxrwx  1 trydofor users     23 Sep 30 20:32 olft -> /home/groups/o/ol/olft/
>lrwxrwxrwx  1 root     root      31 Oct 24 01:43 uploads -> /incoming/t/tr/trydofor/uploads
>lrwxrwxrwx  1 root     root      27 Oct 24 02:07 userweb -> /home/userweb/t/tr/trydofor

#获得CVS的副本.
cd cvsrepo
rsync -av rsync://a9w3.cvs.sourceforge.net/cvsroot/a9w3/* a9w3
rsync -av rsync://a9text.cvs.sourceforge.net/cvsroot/a9text/* a9text
ll
>total 8
>drwxrwxr-x 4 trydofor a9w3   80 Mar 13 05:58 a9text
>drwxrwxr-x 5 trydofor a9w3 1024 Mar 13 05:49 a9w3

#转换成svndump
cd a9w3
~/cvs2svn-2.2.0/cvs2svn --dumpfile=svndump .
# 没有错误信息,截取最后一段
>Timings (seconds):
>------------------
>16.03   pass1    CollectRevsPass
> 0.04   pass2    CleanMetadataPass
> 0.02   pass3    CollateSymbolsPass
> 0.75   pass4    FilterSymbolsPass
> 0.10   pass5    SortRevisionSummaryPass
> 0.02   pass6    SortSymbolSummaryPass
> 0.41   pass7    InitializeChangesetsPass
> 1.56   pass8    BreakRevisionChangesetCyclesPass
> 0.27   pass9    RevisionTopologicalSortPass
> 0.09   pass10   BreakSymbolChangesetCyclesPass
> 0.29   pass11   BreakAllChangesetCyclesPass
> 0.23   pass12   TopologicalSortPass
> 0.80   pass13   CreateRevsPass
> 0.02   pass14   SortSymbolsPass
> 0.02   pass15   IndexSymbolsPass
>21.95   pass16   OutputPass
>42.59   total
ll
>total 21712
>dr-xrwsr-x 3 trydofor a9w3     2048 Feb 11 12:56 CVSROOT
>dr-xrwsr-x 6 trydofor a9w3     1024 Mar 13 00:52 a9w3
>dr-xrwsr-x 3 trydofor a9w3       80 Dec 12 12:16 a9w3-user
>-rw-rw-r-- 1 trydofor a9w3 22186298 Mar 13 06:07 svndump

#通过sftp上传
sftp [e-mail]
>Connecting to frs.sf.net...
>[e-mail]'s password:
sftp> cd  uploads
sftp> put svndump
>Uploading svndump to /incoming/t/tr/trydofor/uploads/svndump
>svndump                            100%   21MB   7.1MB/s   00:03
sftp> exit
=========================================================================
登陆sf,或使用下面URL,使用web的功能来完成替换的操作.
https://sourceforge.net/project/admin/svn_migration.php

注意,选择'replace','Destination' 保持空白.
在手册中有对为什么这么设定的说明.

提交之后出现下面这个消息,实际上没那么恐怖,很快.
.........................................................................
Your request for migration has been registered.
Migration will take 1-3 hours, depending on the size of your repository,
and the size of the queue in front of you.
If it still hasn't been created in 24 hours,
please file a Support Request.
.........................................................................

不时的 'Refresh'一下,看看状态.

.........................................................................
Last request for migration is:
Requested by:       trydoforProject Admin
Requested on:       2009-03-13 14:57
Source data type:   SVN dump file archive
Source file:        svndump
Destination:       
Replacement:        Yes
Current status:     COMPLETE

Tries:
Start                  End                    Status
2009-03-13 14:58       2009-03-13 15:04       COMPLETE
.........................................................................

成功之后,通过网页和tortoise可以访问了
http://a9w3.svn.sourceforge.net/viewvc/a9w3/trunk/a9w3/

待 a9w3 完毕之后,开始对付 a9text
唯一的问题是,a9text中出现了非 UTF8的编码,在cvs2svn是报错.
按照提示,增加参数 '--fallback-encoding=GBK'
~/cvs2svn-2.2.0/cvs2svn --fallback-encoding=GBK  --dumpfile=svndump .
一切顺利

不过,唯一不爽的是,trunk有个的 'CVSROOT/',比较不伦不类.
哎,没有办法,SVN不能彻底删除这个目录,而CVS上可以,忍忍吧.

如果早调查一下,就不转成SVN了,万一那天手发抖,提交了个X档案,
还无法删除,多闹心啊.