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https://github.com/git/git
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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>
116 lines
4.4 KiB
Bash
Executable file
116 lines
4.4 KiB
Bash
Executable file
#!/bin/sh
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# Copyright (c) 2006 Eric Wong
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test_description='git-svn metadata migrations from previous versions'
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. ./lib-git-svn.sh
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test_expect_success 'setup old-looking metadata' "
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cp $GIT_DIR/config $GIT_DIR/config-old-git-svn &&
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mkdir import &&
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cd import &&
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for i in trunk branches/a branches/b \
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tags/0.1 tags/0.2 tags/0.3; do
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mkdir -p \$i && \
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echo hello >> \$i/README || exit 1
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done && \
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svn import -m test . $svnrepo
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cd .. &&
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git-svn init $svnrepo &&
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git-svn fetch &&
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mv $GIT_DIR/svn/* $GIT_DIR/ &&
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mv $GIT_DIR/svn/.metadata $GIT_DIR/ &&
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rmdir $GIT_DIR/svn &&
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git update-ref refs/heads/git-svn-HEAD refs/remotes/git-svn &&
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git update-ref refs/heads/svn-HEAD refs/remotes/git-svn &&
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git update-ref -d refs/remotes/git-svn refs/remotes/git-svn
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"
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head=`git rev-parse --verify refs/heads/git-svn-HEAD^0`
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test_expect_success 'git-svn-HEAD is a real HEAD' "test -n '$head'"
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test_expect_success 'initialize old-style (v0) git-svn layout' "
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mkdir -p $GIT_DIR/git-svn/info $GIT_DIR/svn/info &&
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echo $svnrepo > $GIT_DIR/git-svn/info/url &&
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echo $svnrepo > $GIT_DIR/svn/info/url &&
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git-svn migrate &&
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! test -d $GIT_DIR/git-svn &&
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git rev-parse --verify refs/remotes/git-svn^0 &&
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git rev-parse --verify refs/remotes/svn^0 &&
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test \`git config --get svn-remote.svn.url\` = '$svnrepo' &&
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test \`git config --get svn-remote.svn.fetch\` = \
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':refs/remotes/git-svn'
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"
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test_expect_success 'initialize a multi-repository repo' "
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git-svn init $svnrepo -T trunk -t tags -b branches &&
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git config --get-all svn-remote.svn.fetch > fetch.out &&
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grep '^trunk:refs/remotes/trunk$' fetch.out &&
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test -n \"\`git config --get svn-remote.svn.branches \
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'^branches/\*:refs/remotes/\*$'\`\" &&
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test -n \"\`git config --get svn-remote.svn.tags \
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'^tags/\*:refs/remotes/tags/\*$'\`\" &&
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git config --unset svn-remote.svn.branches \
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'^branches/\*:refs/remotes/\*$' &&
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git config --unset svn-remote.svn.tags \
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'^tags/\*:refs/remotes/tags/\*$' &&
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git config --add svn-remote.svn.fetch 'branches/a:refs/remotes/a' &&
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git config --add svn-remote.svn.fetch 'branches/b:refs/remotes/b' &&
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for i in tags/0.1 tags/0.2 tags/0.3; do
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git config --add svn-remote.svn.fetch \
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\$i:refs/remotes/\$i || exit 1; done
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"
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# refs should all be different, but the trees should all be the same:
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test_expect_success 'multi-fetch works on partial urls + paths' "
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git-svn multi-fetch &&
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for i in trunk a b tags/0.1 tags/0.2 tags/0.3; do
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git rev-parse --verify refs/remotes/\$i^0 >> refs.out || exit 1;
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done &&
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test -z \"\`sort < refs.out | uniq -d\`\" &&
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for i in trunk a b tags/0.1 tags/0.2 tags/0.3; do
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for j in trunk a b tags/0.1 tags/0.2 tags/0.3; do
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if test \$j != \$i; then continue; fi
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test -z \"\`git diff refs/remotes/\$i \
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refs/remotes/\$j\`\" ||exit 1; done; done
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"
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test_expect_success 'migrate --minimize on old inited layout' "
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git config --unset-all svn-remote.svn.fetch &&
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git config --unset-all svn-remote.svn.url &&
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rm -rf $GIT_DIR/svn &&
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for i in \`cat fetch.out\`; do
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path=\`expr \$i : '\\([^:]*\\):.*$'\`
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ref=\`expr \$i : '[^:]*:refs/remotes/\\(.*\\)$'\`
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if test -z \"\$ref\"; then continue; fi
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if test -n \"\$path\"; then path=\"/\$path\"; fi
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( mkdir -p $GIT_DIR/svn/\$ref/info/ &&
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echo $svnrepo\$path > $GIT_DIR/svn/\$ref/info/url ) || exit 1;
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done &&
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git-svn migrate --minimize &&
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test -z \"\`git config -l |grep -v '^svn-remote\.git-svn\.'\`\" &&
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git config --get-all svn-remote.svn.fetch > fetch.out &&
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grep '^trunk:refs/remotes/trunk$' fetch.out &&
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grep '^branches/a:refs/remotes/a$' fetch.out &&
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grep '^branches/b:refs/remotes/b$' fetch.out &&
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grep '^tags/0\.1:refs/remotes/tags/0\.1$' fetch.out &&
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grep '^tags/0\.2:refs/remotes/tags/0\.2$' fetch.out &&
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grep '^tags/0\.3:refs/remotes/tags/0\.3$' fetch.out
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grep '^:refs/remotes/git-svn' fetch.out
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"
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test_expect_success ".rev_db auto-converted to .rev_map.UUID" "
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git-svn fetch -i trunk &&
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test -z \"\$(ls $GIT_DIR/svn/trunk/.rev_db.* 2>/dev/null)\" &&
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expect=\"\$(ls $GIT_DIR/svn/trunk/.rev_map.*)\" &&
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test -n \"\$expect\" &&
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rev_db=\$(echo \$expect | sed -e 's,_map,_db,') &&
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convert_to_rev_db \$expect \$rev_db &&
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rm -f \$expect &&
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test -f \$rev_db &&
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git-svn fetch -i trunk &&
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test -z \"\$(ls $GIT_DIR/svn/trunk/.rev_db.* 2>/dev/null)\" &&
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test ! -e $GIT_DIR/svn/trunk/.rev_db &&
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test -f \$expect
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"
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test_done
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