git/Documentation/git-pack-refs.txt

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git-pack-refs(1)
================
NAME
----
git-pack-refs - Pack heads and tags for efficient repository access
SYNOPSIS
--------
[verse]
'git pack-refs' [--all] [--no-prune]
DESCRIPTION
-----------
Traditionally, tips of branches and tags (collectively known as
'refs') were stored one file per ref in a (sub)directory
under `$GIT_DIR/refs`
directory. While many branch tips tend to be updated often,
most tags and some branch tips are never updated. When a
repository has hundreds or thousands of tags, this
one-file-per-ref format both wastes storage and hurts
performance.
This command is used to solve the storage and performance
problem by storing the refs in a single file,
`$GIT_DIR/packed-refs`. When a ref is missing from the
traditional `$GIT_DIR/refs` directory hierarchy, it is looked
up in this
file and used if found.
Subsequent updates to branches always create new files under
`$GIT_DIR/refs` directory hierarchy.
A recommended practice to deal with a repository with too many
refs is to pack its refs with `--all --prune` once, and
docs: stop using asciidoc no-inline-literal In asciidoc 7, backticks like `foo` produced a typographic effect, but did not otherwise affect the syntax. In asciidoc 8, backticks introduce an "inline literal" inside which markup is not interpreted. To keep compatibility with existing documents, asciidoc 8 has a "no-inline-literal" attribute to keep the old behavior. We enabled this so that the documentation could be built on either version. It has been several years now, and asciidoc 7 is no longer in wide use. We can now decide whether or not we want inline literals on their own merits, which are: 1. The source is much easier to read when the literal contains punctuation. You can use `master~1` instead of `master{tilde}1`. 2. They are less error-prone. Because of point (1), we tend to make mistakes and forget the extra layer of quoting. This patch removes the no-inline-literal attribute from the Makefile and converts every use of backticks in the documentation to an inline literal (they must be cleaned up, or the example above would literally show "{tilde}" in the output). Problematic sites were found by grepping for '`.*[{\\]' and examined and fixed manually. The results were then verified by comparing the output of "html2text" on the set of generated html pages. Doing so revealed that in addition to making the source more readable, this patch fixes several formatting bugs: - HTML rendering used the ellipsis character instead of literal "..." in code examples (like "git log A...B") - some code examples used the right-arrow character instead of '->' because they failed to quote - api-config.txt did not quote tilde, and the resulting HTML contained a bogus snippet like: <tt><sub></tt> foo <tt></sub>bar</tt> which caused some parsers to choke and omit whole sections of the page. - git-commit.txt confused ``foo`` (backticks inside a literal) with ``foo'' (matched double-quotes) - mentions of `A U Thor <author@example.com>` used to erroneously auto-generate a mailto footnote for author@example.com - the description of --word-diff=plain incorrectly showed the output as "[-removed-] and {added}", not "{+added+}". - using "prime" notation like: commit `C` and its replacement `C'` confused asciidoc into thinking that everything between the first backtick and the final apostrophe were meant to be inside matched quotes - asciidoc got confused by the escaping of some of our asterisks. In particular, `credential.\*` and `credential.<url>.\*` properly escaped the asterisk in the first case, but literally passed through the backslash in the second case. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-26 12:51:57 +04:00
occasionally run `git pack-refs --prune`. Tags are by
definition stationary and are not expected to change. Branch
heads will be packed with the initial `pack-refs --all`, but
only the currently active branch heads will become unpacked,
and the next `pack-refs` (without `--all`) will leave them
unpacked.
OPTIONS
-------
--all::
The command by default packs all tags and refs that are already
packed, and leaves other refs
alone. This is because branches are expected to be actively
developed and packing their tips does not help performance.
This option causes branch tips to be packed as well. Useful for
a repository with many branches of historical interests.
--no-prune::
The command usually removes loose refs under `$GIT_DIR/refs`
hierarchy after packing them. This option tells it not to.
BUGS
----
Older documentation written before the packed-refs mechanism was
introduced may still say things like ".git/refs/heads/<branch> file
exists" when it means "branch <branch> exists".
GIT
---
Part of the linkgit:git[1] suite