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Document the new migration tool

maint
Matthias Urlichs 2005-06-28 21:11:23 +02:00
parent 465416694a
commit e694dbabbf
1 changed files with 20 additions and 4 deletions
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Documentation/cvs-migration.txt
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@ -63,19 +63,35 @@ Once you've gotten (and installed) cvsps, you may or may not want to get
any more familiar with it, but make sure it is in your path. After that, any more familiar with it, but make sure it is in your path. After that,
the magic command line is the magic command line is


git cvsimport <cvsroot> <module> git cvsimport -d <cvsroot> <module> <destination>


which will do exactly what you'd think it does: it will create a git which will do exactly what you'd think it does: it will create a git
archive of the named CVS module. The new archive will be created in a archive of the named CVS module. The new archive will be created in the
subdirectory named <module>. subdirectory named <destination>; it'll be created if it doesn't exist.
Default is the local directory.


It can take some time to actually do the conversion for a large archive It can take some time to actually do the conversion for a large archive
since it involves checking out from CVS every revision of every file, since it involves checking out from CVS every revision of every file,
and the conversion script can be reasonably chatty, but on some not very and the conversion script can be reasonably chatty, but on some not very
scientific tests it averaged about eight revisions per second, so a scientific tests it averaged about twenty revisions per second, so a
medium-sized project should not take more than a couple of minutes. For medium-sized project should not take more than a couple of minutes. For
larger projects or remote repositories, the process may take longer. larger projects or remote repositories, the process may take longer.


After the import is done, do this:

cp .git/refs/heads/<branch> .git/refs/heads/master
git-read-tree
git-checkout-cache -q -f -u -a

The head branch is named "origin" by default; you can change that using
the '-o' option to "git cvsimport".

The import is incremental, i.e. if you call it again next month it'll
fetch any CVS updates that have been happening in the meantime. You can
then merge those updates into your main branch:

cg-merge <branch>



Emulating CVS behaviour Emulating CVS behaviour
----------------------- -----------------------