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Eric Wong 060610c572 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>
2007-12-10 21:28:25 -08:00
arm
compat
contrib
Documentation
git-gui
gitk-git
gitweb
mozilla-sha1
perl
ppc
t
templates
xdiff
.gitignore
.mailmap
alloc.c
archive-tar.c
archive-zip.c
archive.h
attr.c
attr.h
base85.c
blob.c
blob.h
builtin-add.c
builtin-annotate.c
builtin-apply.c
builtin-archive.c
builtin-blame.c
builtin-branch.c
builtin-bundle.c
builtin-cat-file.c
builtin-check-attr.c
builtin-check-ref-format.c
builtin-checkout-index.c
builtin-clean.c
builtin-commit-tree.c
builtin-commit.c
builtin-config.c
builtin-count-objects.c
builtin-describe.c
builtin-diff-files.c
builtin-diff-index.c
builtin-diff-tree.c
builtin-diff.c
builtin-fast-export.c
builtin-fetch--tool.c
builtin-fetch-pack.c
builtin-fetch.c
builtin-fmt-merge-msg.c
builtin-for-each-ref.c
builtin-fsck.c
builtin-gc.c
builtin-grep.c
builtin-http-fetch.c
builtin-init-db.c
builtin-log.c
builtin-ls-files.c
builtin-ls-remote.c
builtin-ls-tree.c
builtin-mailinfo.c
builtin-mailsplit.c
builtin-merge-base.c
builtin-merge-file.c
builtin-merge-ours.c
builtin-mv.c
builtin-name-rev.c
builtin-pack-objects.c
builtin-pack-refs.c
builtin-prune-packed.c
builtin-prune.c
builtin-push.c
builtin-read-tree.c
builtin-reflog.c
builtin-rerere.c
builtin-reset.c
builtin-rev-list.c
builtin-rev-parse.c
builtin-revert.c
builtin-rm.c
builtin-runstatus.c
builtin-send-pack.c
builtin-shortlog.c
builtin-show-branch.c
builtin-show-ref.c
builtin-stripspace.c
builtin-symbolic-ref.c
builtin-tag.c
builtin-tar-tree.c
builtin-unpack-objects.c
builtin-update-index.c
builtin-update-ref.c
builtin-upload-archive.c
builtin-verify-pack.c
builtin-verify-tag.c
builtin-write-tree.c
builtin.h
bundle.c
bundle.h
cache-tree.c
cache-tree.h
cache.h
check-builtins.sh
check-racy.c
color.c
color.h
combine-diff.c
command-list.txt
commit.c
commit.h
config.c
config.mak.in
configure.ac
connect.c
convert.c
copy.c
COPYING
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date.c
decorate.c
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delta.h
diff-delta.c
diff-lib.c
diff.c
diff.h
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c
diffcore-rename.c
diffcore.h
dir.c
dir.h
dump-cache-tree.c
entry.c
environment.c
exec_cmd.c
exec_cmd.h
fast-import.c
fetch-pack.h
fixup-builtins
generate-cmdlist.sh
git-add--interactive.perl
git-am.sh
git-archimport.perl
git-bisect.sh
git-checkout.sh
git-clone.sh
git-compat-util.h
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-filter-branch.sh
git-instaweb.sh
git-lost-found.sh
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-resolve.sh
git-merge-stupid.sh
git-merge.sh
git-mergetool.sh
git-parse-remote.sh
git-pull.sh
git-quiltimport.sh
git-rebase--interactive.sh
git-rebase.sh
git-relink.perl
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git-repack.sh
git-request-pull.sh
git-send-email.perl
git-sh-setup.sh
git-stash.sh
git-submodule.sh
git-svn.perl
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git.c
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INSTALL
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list-objects.c
list-objects.h
lockfile.c
log-tree.c
log-tree.h
mailmap.c
mailmap.h
Makefile
match-trees.c
merge-file.c
merge-index.c
merge-recursive.c
merge-tree.c
mktag.c
mktree.c
object-refs.c
object.c
object.h
pack-check.c
pack-redundant.c
pack-write.c
pack.h
pager.c
parse-options.c
parse-options.h
patch-delta.c
patch-id.c
patch-ids.c
patch-ids.h
path-list.c
path-list.h
path.c
pkt-line.c
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pretty.c
progress.c
progress.h
quote.c
quote.h
reachable.c
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read-cache.c
README
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reflog-walk.c
reflog-walk.h
refs.c
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revision.c
revision.h
run-command.c
run-command.h
send-pack.h
server-info.c
setup.c
sha1_file.c
sha1_name.c
shallow.c
shell.c
show-index.c
sideband.c
sideband.h
strbuf.c
strbuf.h
symlinks.c
tag.c
tag.h
tar.h
test-absolute-path.c
test-chmtime.c
test-date.c
test-delta.c
test-genrandom.c
test-match-trees.c
test-parse-options.c
test-sha1.c
test-sha1.sh
trace.c
transport.c
transport.h
tree-diff.c
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unpack-file.c
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update-server-info.c
upload-pack.c
usage.c
utf8.c
utf8.h
var.c
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ws.c
wt-status.c
wt-status.h
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xdiff-interface.h

////////////////////////////////////////////////////////////////

	GIT - the stupid content tracker

////////////////////////////////////////////////////////////////

"git" can mean anything, depending on your mood.

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   mispronunciation of "get" may or may not be relevant.
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Please read the file INSTALL for installation instructions.
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The messages titled "A note from the maintainer", "What's in
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