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Version 2.46.0
▾
git-commit-graph last updated in 2.55.0
NAME
git-commit-graph - Write and verify Git commit-graph files
SYNOPSIS
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
Manage the serialized commit-graph file.
OPTIONS
- --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
- 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
-
Write a commit-graph file for the packed commits in your local .git
directory.
-
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
CONFIGURATION
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.
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.
commit-graph
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