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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | COMMANDS | EXAMPLES | CONFIGURATION | FILE FORMAT | GIT | COLOPHON |
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GIT-COMMIT-GRAPH(1) Git Manual GIT-COMMIT-GRAPH(1)
git-commit-graph - Write and verify Git commit-graph files
git commit-graph verify [--object-dir <dir>] [--shallow] [--[no-]progress]
git commit-graph write [--object-dir <dir>] [--append]
[--split[=<strategy>]] [--reachable | --stdin-packs | --stdin-commits]
[--changed-paths] [--[no-]max-new-filters <n>] [--[no-]progress]
<split-options>
Manage the serialized commit-graph file.
--object-dir
Use given directory for the location of packfiles and
commit-graph file. This parameter exists to specify the
location of an alternate that only has the objects directory,
not a full .git directory. The commit-graph file is expected
to be in the <dir>/info directory and the packfiles are
expected to be in <dir>/pack. If the directory could not be
made into an absolute path, or does not match any known object
directory, git commit-graph ... will exit with non-zero
status.
--[no-]progress
Turn progress on/off explicitly. If neither is specified,
progress is shown if standard error is connected to a
terminal.
write
Write a commit-graph file based on the commits found in
packfiles. If the config option core.commitGraph is disabled,
then this command will output a warning, then return success
without writing a commit-graph file.
With the --stdin-packs option, generate the new commit graph
by walking objects only in the specified pack-indexes. (Cannot
be combined with --stdin-commits or --reachable.)
With the --stdin-commits option, generate the new commit graph
by walking commits starting at the commits specified in stdin
as a list of OIDs in hex, one OID per line. OIDs that resolve
to non-commits (either directly, or by peeling tags) are
silently ignored. OIDs that are malformed, or do not exist
generate an error. (Cannot be combined with --stdin-packs or
--reachable.)
With the --reachable option, generate the new commit graph by
walking commits starting at all refs. (Cannot be combined with
--stdin-commits or --stdin-packs.)
With the --append option, include all commits that are present
in the existing commit-graph file.
With the --changed-paths option, compute and write information
about the paths changed between a commit and its first parent.
This operation can take a while on large repositories. It
provides significant performance gains for getting history of
a directory or a file with git log -- <path>. If this option
is given, future commit-graph writes will automatically assume
that this option was intended. Use --no-changed-paths to stop
storing this data.
With the --max-new-filters=<n> option, generate at most n new
Bloom filters (if --changed-paths is specified). If n is -1,
no limit is enforced. Only commits present in the new layer
count against this limit. To retroactively compute Bloom
filters over earlier layers, it is advised to use
--split=replace. Overrides the commitGraph.maxNewFilters
configuration.
With the --split[=<strategy>] option, write the commit-graph
as a chain of multiple commit-graph files stored in
<dir>/info/commit-graphs. Commit-graph layers are merged based
on the strategy and other splitting options. The new commits
not already in the commit-graph are added in a new "tip" file.
This file is merged with the existing file if the following
merge conditions are met:
• If --split=no-merge is specified, a merge is never
performed, and the remaining options are ignored.
--split=replace overwrites the existing chain with a new
one. A bare --split defers to the remaining options. (Note
that merging a chain of commit graphs replaces the
existing chain with a length-1 chain where the first and
only incremental holds the entire graph).
• If --size-multiple=<X> is not specified, let X equal 2. If
the new tip file would have N commits and the previous tip
has M commits and X times N is greater than M, instead
merge the two files into a single file.
• If --max-commits=<M> is specified with M a positive
integer, and the new tip file would have more than M
commits, then instead merge the new tip with the previous
tip.
Finally, if --expire-time=<datetime> is not specified, let
datetime be the current time. After writing the split
commit-graph, delete all unused commit-graph whose
modified times are older than datetime.
verify
Read the commit-graph file and verify its contents against the
object database. Used to check for corrupted data.
With the --shallow option, only check the tip commit-graph
file in a chain of split commit-graphs.
• Write a commit-graph file for the packed commits in your local
.git directory.
$ git commit-graph write
• Write a commit-graph file, extending the current commit-graph
file using commits in <pack-index>.
$ echo <pack-index> | git commit-graph write --stdin-packs
• Write a commit-graph file containing all reachable commits.
$ git show-ref -s | git commit-graph write --stdin-commits
• Write a commit-graph file containing all commits in the
current commit-graph file along with those reachable from
HEAD.
$ git rev-parse HEAD | git commit-graph write --stdin-commits --append
Everything below this line in this section is selectively included
from the git-config(1) documentation. The content is the same as
what’s found there:
commitGraph.generationVersion
Specifies the type of generation number version to use when
writing or reading the commit-graph file. If version 1 is
specified, then the corrected commit dates will not be written
or read. Defaults to 2.
commitGraph.maxNewFilters
Specifies the default value for the --max-new-filters option
of git commit-graph write (c.f., git-commit-graph(1)).
commitGraph.readChangedPaths
Deprecated. Equivalent to commitGraph.changedPathsVersion=-1
if true, and commitGraph.changedPathsVersion=0 if false. (If
commitGraph.changedPathVersion is also set,
commitGraph.changedPathsVersion takes precedence.)
commitGraph.changedPathsVersion
Specifies the version of the changed-path Bloom filters that
Git will read and write. May be -1, 0, 1, or 2. Note that
values greater than 1 may be incompatible with older versions
of Git which do not yet understand those versions. Use caution
when operating in a mixed-version environment.
Defaults to -1.
If -1, Git will use the version of the changed-path Bloom
filters in the repository, defaulting to 1 if there are none.
If 0, Git will not read any Bloom filters, and will write
version 1 Bloom filters when instructed to write.
If 1, Git will only read version 1 Bloom filters, and will
write version 1 Bloom filters.
If 2, Git will only read version 2 Bloom filters, and will
write version 2 Bloom filters.
See git-commit-graph(1) for more information.
see gitformat-commit-graph(5).
Part of the git(1) suite
This page is part of the git (Git distributed version control
system) project. Information about the project can be found at
⟨http://git-scm.com/⟩. If you have a bug report for this manual
page, see ⟨http://git-scm.com/community⟩. This page was obtained
from the project's upstream Git repository
⟨https://github.com/git/git.git⟩ on 2025-02-02. (At that time,
the date of the most recent commit that was found in the
repository was 2025-01-31.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
Git 2.48.1.166.g58b580 2025-01-31 GIT-COMMIT-GRAPH(1)
Pages that refer to this page: git(1), git-commit-graph(1), git-config(1), git-fsck(1), git-gc(1)
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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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