mirror of
https://github.com/git/git.git
synced 2025-04-21 03:37:14 +00:00
060610c572
Migrations are done automatically on an as-needed basis when new
revisions are to be fetched. Stale remote branches do not get
migrated, yet.
However, unless you set noMetadata or useSvkProps it's safe to
just do:
find $GIT_DIR/svn -name '.rev_db*' -print0 | xargs rm -f
to purge all the old .rev_db files.
The new format is a one-way migration and is NOT compatible with
old versions of git-svn.
This is the replacement for the rev_db format, which was too big
and inefficient for large repositories with a lot of sparse history
(mainly tags).
The format is this:
- 24 bytes for every record,
* 4 bytes for the integer representing an SVN revision number
* 20 bytes representing the sha1 of a git commit
- No empty padding records like the old format
- new records are written append-only since SVN revision numbers
increase monotonically
- lookups on SVN revision number are done via a binary search
- Piping the file to xxd(1) -c24 is a good way of dumping it for
viewing or editing, should the need ever arise.
As with .rev_db, these files are disposable unless noMetadata or
useSvmProps is set.
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
//////////////////////////////////////////////////////////////// GIT - the stupid content tracker //////////////////////////////////////////////////////////////// "git" can mean anything, depending on your mood. - random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant. - stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang. - "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room. - "goddamn idiotic truckload of sh*t": when it breaks Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. Git is an Open Source project covered by the GNU General Public License. It was originally written by Linus Torvalds with help of a group of hackers around the net. It is currently maintained by Junio C Hamano. Please read the file INSTALL for installation instructions. See Documentation/tutorial.txt to get started, then see Documentation/everyday.txt for a useful minimum set of commands, and "man git-commandname" for documentation of each command. CVS users may also want to read Documentation/cvs-migration.txt. Many Git online resources are accessible from http://git.or.cz/ including full documentation and Git related tools. The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org. To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at http://marc.theaimsgroup.com/?l=git and other archival sites. The messages titled "A note from the maintainer", "What's in git.git (stable)" and "What's cooking in git.git (topics)" and the discussion following them on the mailing list give a good reference for project status, development direction and remaining tasks.