6 git-commit-graph - Write and verify Git commit-graph files
12 'git commit-graph verify' [--object-dir <dir>] [--shallow] [--[no-]progress]
13 'git commit-graph write' [--object-dir <dir>] [--append]
14 [--split[=<strategy>]] [--reachable | --stdin-packs | --stdin-commits]
15 [--changed-paths] [--[no-]max-new-filters <n>] [--[no-]progress]
22 Manage the serialized commit-graph file.
28 Use given directory for the location of packfiles and commit-graph
29 file. This parameter exists to specify the location of an alternate
30 that only has the objects directory, not a full `.git` directory. The
31 commit-graph file is expected to be in the `<dir>/info` directory and
32 the packfiles are expected to be in `<dir>/pack`. If the directory
33 could not be made into an absolute path, or does not match any known
34 object directory, `git commit-graph ...` will exit with non-zero
38 Turn progress on/off explicitly. If neither is specified, progress is
39 shown if standard error is connected to a terminal.
45 Write a commit-graph file based on the commits found in packfiles. If
46 the config option `core.commitGraph` is disabled, then this command will
47 output a warning, then return success without writing a commit-graph file.
49 With the `--stdin-packs` option, generate the new commit graph by
50 walking objects only in the specified pack-indexes. (Cannot be combined
51 with `--stdin-commits` or `--reachable`.)
53 With the `--stdin-commits` option, generate the new commit graph by
54 walking commits starting at the commits specified in stdin as a list
55 of OIDs in hex, one OID per line. OIDs that resolve to non-commits
56 (either directly, or by peeling tags) are silently ignored. OIDs that
57 are malformed, or do not exist generate an error. (Cannot be combined
58 with `--stdin-packs` or `--reachable`.)
60 With the `--reachable` option, generate the new commit graph by walking
61 commits starting at all refs. (Cannot be combined with `--stdin-commits`
64 With the `--append` option, include all commits that are present in the
65 existing commit-graph file.
67 With the `--changed-paths` option, compute and write information about the
68 paths changed between a commit and its first parent. This operation can
69 take a while on large repositories. It provides significant performance gains
70 for getting history of a directory or a file with `git log -- <path>`. If
71 this option is given, future commit-graph writes will automatically assume
72 that this option was intended. Use `--no-changed-paths` to stop storing this
75 With the `--max-new-filters=<n>` option, generate at most `n` new Bloom
76 filters (if `--changed-paths` is specified). If `n` is `-1`, no limit is
77 enforced. Only commits present in the new layer count against this
78 limit. To retroactively compute Bloom filters over earlier layers, it is
79 advised to use `--split=replace`. Overrides the `commitGraph.maxNewFilters`
82 With the `--split[=<strategy>]` option, write the commit-graph as a
83 chain of multiple commit-graph files stored in
84 `<dir>/info/commit-graphs`. Commit-graph layers are merged based on the
85 strategy and other splitting options. The new commits not already in the
86 commit-graph are added in a new "tip" file. This file is merged with the
87 existing file if the following merge conditions are met:
89 * If `--split=no-merge` is specified, a merge is never performed, and
90 the remaining options are ignored. `--split=replace` overwrites the
91 existing chain with a new one. A bare `--split` defers to the remaining
92 options. (Note that merging a chain of commit graphs replaces the
93 existing chain with a length-1 chain where the first and only
94 incremental holds the entire graph).
96 * If `--size-multiple=<X>` is not specified, let `X` equal 2. If the new
97 tip file would have `N` commits and the previous tip has `M` commits and
98 `X` times `N` is greater than `M`, instead merge the two files into a
101 * If `--max-commits=<M>` is specified with `M` a positive integer, and the
102 new tip file would have more than `M` commits, then instead merge the new
103 tip with the previous tip.
105 Finally, if `--expire-time=<datetime>` is not specified, let `datetime`
106 be the current time. After writing the split commit-graph, delete all
107 unused commit-graph whose modified times are older than `datetime`.
111 Read the commit-graph file and verify its contents against the object
112 database. Used to check for corrupted data.
114 With the `--shallow` option, only check the tip commit-graph file in
115 a chain of split commit-graphs.
121 * Write a commit-graph file for the packed commits in your local `.git`
124 ------------------------------------------------
125 $ git commit-graph write
126 ------------------------------------------------
128 * Write a commit-graph file, extending the current commit-graph file
129 using commits in `<pack-index>`.
131 ------------------------------------------------
132 $ echo <pack-index> | git commit-graph write --stdin-packs
133 ------------------------------------------------
135 * Write a commit-graph file containing all reachable commits.
137 ------------------------------------------------
138 $ git show-ref -s | git commit-graph write --stdin-commits
139 ------------------------------------------------
141 * Write a commit-graph file containing all commits in the current
142 commit-graph file along with those reachable from `HEAD`.
144 ------------------------------------------------
145 $ git rev-parse HEAD | git commit-graph write --stdin-commits --append
146 ------------------------------------------------
151 include::includes/cmd-config-section-all.txt[]
153 include::config/commitgraph.txt[]
159 see linkgit:gitformat-commit-graph[5].
163 Part of the linkgit:git[1] suite