1GIT-COMMIT-GRAPH(1) Git Manual GIT-COMMIT-GRAPH(1)
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6 git-commit-graph - Write and verify Git commit-graph files
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9 git commit-graph verify [--object-dir <dir>] [--shallow] [--[no-]progress]
10 git commit-graph write <options> [--object-dir <dir>] [--[no-]progress]
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13 Manage the serialized commit-graph file.
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16 --object-dir
17 Use given directory for the location of packfiles and commit-graph
18 file. This parameter exists to specify the location of an alternate
19 that only has the objects directory, not a full .git directory. The
20 commit-graph file is expected to be in the <dir>/info directory and
21 the packfiles are expected to be in <dir>/pack. If the directory
22 could not be made into an absolute path, or does not match any
23 known object directory, git commit-graph ... will exit with
24 non-zero status.
25 --[no-]progress
27 Turn progress on/off explicitly. If neither is specified, progress
28 is shown if standard error is connected to a terminal.
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31 write
32 Write a commit-graph file based on the commits found in packfiles.
33 If the config option core.commitGraph is disabled, then this
34 command will output a warning, then return success without writing
35 a commit-graph file.
36 With the --stdin-packs option, generate the new commit graph by
38 walking objects only in the specified pack-indexes. (Cannot be
39 combined with --stdin-commits or --reachable.)
40 With the --stdin-commits option, generate the new commit graph by
42 walking commits starting at the commits specified in stdin as a
43 list of OIDs in hex, one OID per line. OIDs that resolve to
44 non-commits (either directly, or by peeling tags) are silently
45 ignored. OIDs that are malformed, or do not exist generate an
46 error. (Cannot be combined with --stdin-packs or --reachable.)
47 With the --reachable option, generate the new commit graph by
49 walking commits starting at all refs. (Cannot be combined with
50 --stdin-commits or --stdin-packs.)
51 With the --append option, include all commits that are present in
53 the existing commit-graph file.
54 With the --changed-paths option, compute and write information
56 about the paths changed between a commit and its first parent. This
57 operation can take a while on large repositories. It provides
58 significant performance gains for getting history of a directory or
59 a file with git log -- <path>. If this option is given, future
60 commit-graph writes will automatically assume that this option was
61 intended. Use --no-changed-paths to stop storing this data.
62 With the --max-new-filters=<n> option, generate at most n new Bloom
64 filters (if --changed-paths is specified). If n is -1, no limit is
65 enforced. Only commits present in the new layer count against this
66 limit. To retroactively compute Bloom filters over earlier layers,
67 it is advised to use --split=replace. Overrides the
68 commitGraph.maxNewFilters configuration.
69 With the --split[=<strategy>] option, write the commit-graph as a
71 chain of multiple commit-graph files stored in
72 <dir>/info/commit-graphs. Commit-graph layers are merged based on
73 the strategy and other splitting options. The new commits not
74 already in the commit-graph are added in a new "tip" file. This
75 file is merged with the existing file if the following merge
76 conditions are met:
77 • If --split=no-merge is specified, a merge is never performed,
79 and the remaining options are ignored. --split=replace
80 overwrites the existing chain with a new one. A bare --split
81 defers to the remaining options. (Note that merging a chain of
82 commit graphs replaces the existing chain with a length-1 chain
83 where the first and only incremental holds the entire graph).
84 • If --size-multiple=<X> is not specified, let X equal 2. If the
86 new tip file would have N commits and the previous tip has M
87 commits and X times N is greater than M, instead merge the two
88 files into a single file.
89 • If --max-commits=<M> is specified with M a positive integer,
91 and the new tip file would have more than M commits, then
92 instead merge the new tip with the previous tip.
93 Finally, if --expire-time=<datetime> is not specified, let
95 datetime be the current time. After writing the split
96 commit-graph, delete all unused commit-graph whose modified
97 times are older than datetime.
98 verify
100 Read the commit-graph file and verify its contents against the
101 object database. Used to check for corrupted data.
102 With the --shallow option, only check the tip commit-graph file in
104 a chain of split commit-graphs.
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107 • Write a commit-graph file for the packed commits in your local .git
108 directory.
109 $ git commit-graph write
111 • Write a commit-graph file, extending the current commit-graph file
113 using commits in <pack-index>.
114 $ echo <pack-index> | git commit-graph write --stdin-packs
116 • Write a commit-graph file containing all reachable commits.
118 $ git show-ref -s | git commit-graph write --stdin-commits
120 • Write a commit-graph file containing all commits in the current
122 commit-graph file along with those reachable from HEAD.
123 $ git rev-parse HEAD | git commit-graph write --stdin-commits --append
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127 Part of the git(1) suite
128Git 2.31.1 2021-03-26 GIT-COMMIT-GRAPH(1)