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Re: StarTeam to Subversion migration

From: Frank Gruman <fgatwork_at_verizon.net>
Date: 2005-07-13 16:21:50 CEST

We also moved from StarTeam to Subversion. And could find no clean way
of migrating the information. As David said, the command line interface
is very sparse, and we could find no other way to move files.

So since we were at a good breaking point in our code, we just pulled
out a copy of what was in StarTeam and did an import into Subversion.
If we needed any history, we kept StarTeam around for a while. After
almost a year, I think we've only had to go back maybe once a month
(tops). Most of our changes are documented inside the code anyway, so
we lost very little in the way of change notes.

I know it doesn't sound pretty, but we weren't happy with StarTeam for a
couple of reasons (price of license, ease of use, etc) and so the switch
to Subversion was an easy choice.

Regards,
Frank

David Weintraub wrote:

>I have experience with StarTeam and Subversion. I previously did a
>StarTeam to ClearCase conversion and have a feeling that a StarTeam to
>Subversion conversion would involve more or less the same stuff.
>
>There is no StarTeam export or any tool that converts from StarTeam to
>any other version control system. StarTeam's command line interface is
>pretty sparse. For example, I couldn't find a way to find every
>release of every file, and a way to export it into ClearCase. I simply
>gave up in trying to convert over everything in StarTeam to ClearCase,
>and instead, I went through what releases I was interested in, and
>only converted over those releases.
>
>It wasn't fun getting information out of StarTeam and putting it into
>ClearCase. I first made a "tree" of the releases I was interested in,
>mapped them to ClearCase, then wrote a program to checkout each of
>those releases in age order and used a program called "citree" to
>check them into ClearCase.
>
>There is no "citree" program in Subversion, so I suspect you'll have
>to create one yourself. The "citree" program first compares the
>directory structure from the StarTeam checkout to my current
>repository. If a directory was in my StarTeam repository, but not in
>my new repository, citree created the directory. If the directory is
>not in my StarTeam folder, but is in my repository, the citree program
>removed the directory. After syncing the directory structures, citree
>does the same for the files. In Unix, the citree program took four
>find commands:
>
>1). Find all directories in your StarTeam checkout: For each
>directory, does that directory currently exist in the repository
>(using the "-d" test)? If no, create the directory in your repository.
>
>2). Find all directories in your new repository, if a directory exists
>in your repository that doesn't exist in the StarTeam repository,
>delete it from your new repository.
>
>3). Find all files in your StarTeam checkout: For each file, see if it
>exists in your new repository. If it doesn't, copy it over and add it.
>If it does exist in your new repository, see if it is different (using
>the "cmp" command). If the two files are different, copy the
>Subversion file over to your new repository.
>
>4). Find all files in your new repository. If the file is in your new
>repository, but not in StarTeam's repository, delete it from your new
>repository.
>
>The whole program was:
>
>For each release you want in StarTeam to be placed in your new repository:
>
>1). Checkout the file from your StarTeam repository
>2). Checkout into another directory, your new repository
>3). Run your "citree" program
>4). Commit the changes into your new repository.
>
>Of course, the easiest thing to do is to simply keep StarTeam for
>archival purposes, and start a new in Subversion. That's what we are
>doing this time instead of converting from RCS to Subversion. We only
>checked out the latest in RCS, and only imported that into Subversion.
>
>On 7/12/05, Gábor Szabó <szabgab@gmail.com> wrote:
>
>
>>Are there tools around helping the StartTeam to Subversion migration ?
>>Does anyone here have experience with it ?
>>What are the issues ?
>>
>>Gabor
>>
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Received on Wed Jul 13 16:23:50 2005

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