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| author | Eric Wong <normalperson@yhbt.net> | 2007-12-08 23:27:41 -0800 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2007-12-10 21:28:25 -0800 |
| commit | 060610c572b21d00bb09ebbab664c0452c7eac9d (patch) | |
| tree | f1f9eb782df1482fc39b2f81f4f6205d0d221bdd /t/t9107-git-svn-migrate.sh | |
| parent | 591aa2536fdbc4090ba8d4ca512d4ee7df4bf05d (diff) | |
| download | git-060610c572b21d00bb09ebbab664c0452c7eac9d.tar.gz | |
git-svn: replace .rev_db with a more space-efficient .rev_map format
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 $GIT_DIR/svn -name '.rev_db*' -print0 | xargs rm -f
to purge all the old .rev_db files.
The new format is a one-way migration and is NOT compatible with
old versions of git-svn.
This is the replacement for the rev_db format, which was too big
and inefficient for large repositories with a lot of sparse history
(mainly tags).
The format is this:
- 24 bytes for every record,
* 4 bytes for the integer representing an SVN revision number
* 20 bytes representing the sha1 of a git commit
- No empty padding records like the old format
- new records are written append-only since SVN revision numbers
increase monotonically
- lookups on SVN revision number are done via a binary search
- Piping the file to xxd(1) -c24 is a good way of dumping it for
viewing or editing, should the need ever arise.
As with .rev_db, these files are disposable unless noMetadata or
useSvmProps is set.
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t9107-git-svn-migrate.sh')
| -rwxr-xr-x | t/t9107-git-svn-migrate.sh | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/t/t9107-git-svn-migrate.sh b/t/t9107-git-svn-migrate.sh index 67fdf7023f..0a41d52c7a 100755 --- a/t/t9107-git-svn-migrate.sh +++ b/t/t9107-git-svn-migrate.sh @@ -97,15 +97,19 @@ test_expect_success 'migrate --minimize on old inited layout' " grep '^:refs/remotes/git-svn' fetch.out " -test_expect_success ".rev_db auto-converted to .rev_db.UUID" " +test_expect_success ".rev_db auto-converted to .rev_map.UUID" " git-svn fetch -i trunk && - expect=$GIT_DIR/svn/trunk/.rev_db.* && + test -z \"\$(ls $GIT_DIR/svn/trunk/.rev_db.* 2>/dev/null)\" && + expect=\"\$(ls $GIT_DIR/svn/trunk/.rev_map.*)\" && test -n \"\$expect\" && - mv \$expect $GIT_DIR/svn/trunk/.rev_db && + rev_db=\$(echo \$expect | sed -e 's,_map,_db,') && + convert_to_rev_db \$expect \$rev_db && + rm -f \$expect && + test -f \$rev_db && git-svn fetch -i trunk && - test -L $GIT_DIR/svn/trunk/.rev_db && - test -f \$expect && - cmp \$expect $GIT_DIR/svn/trunk/.rev_db + test -z \"\$(ls $GIT_DIR/svn/trunk/.rev_db.* 2>/dev/null)\" && + test ! -e $GIT_DIR/svn/trunk/.rev_db && + test -f \$expect " test_done |