commit-graph(1) - Linux manual page (original) (raw)
GIT-COMMIT-GRAPH(1) Git Manual GIT-COMMIT-GRAPH(1)
NAME top
git-commit-graph - Write and verify Git commit-graph filesSYNOPSIS top
_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>DESCRIPTION top
Manage the serialized commit-graph file.OPTIONS top
--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.COMMANDS top
_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.EXAMPLES top
• 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 --appendCONFIGURATION top
Everything below this line in this section is selectively included
from the [git-config(1)](../man1/git-config.1.html) 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)](../man1/git-commit-graph.1.html)).
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)](../man1/git-commit-graph.1.html) for more information.FILE FORMAT top
see [gitformat-commit-graph(5)](../man5/gitformat-commit-graph.5.html).GIT top
Part of the [git(1)](../man1/git.1.html) suiteCOLOPHON top
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man-pages@man7.orgGit 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)