Documentation/git-commit-graph.txt

   1 git-commit-graph(1)
   2 ===================
   3
   4 NAME
   5 ----
   6 git-commit-graph - Write and verify Git commit-graph files
   7
   8
   9 SYNOPSIS
  10 --------
  11 [verse]
  12 'git commit-graph verify' [--object-dir <dir>] [--shallow] [--[no-]progress]
  13 'git commit-graph write' <options> [--object-dir <dir>] [--[no-]progress]
  14
  15
  16 DESCRIPTION
  17 -----------
  18
  19 Manage the serialized commit-graph file.
  20
  21
  22 OPTIONS
  23 -------
  24 --object-dir::
  25         Use given directory for the location of packfiles and commit-graph
  26         file. This parameter exists to specify the location of an alternate
  27         that only has the objects directory, not a full `.git` directory. The
  28         commit-graph file is expected to be in the `<dir>/info` directory and
  29         the packfiles are expected to be in `<dir>/pack`. If the directory
  30         could not be made into an absolute path, or does not match any known
  31         object directory, `git commit-graph ...` will exit with non-zero
  32         status.
  33
  34 --[no-]progress::
  35         Turn progress on/off explicitly. If neither is specified, progress is
  36         shown if standard error is connected to a terminal.
  37
  38 COMMANDS
  39 --------
  40 'write'::
  41
  42 Write a commit-graph file based on the commits found in packfiles.
  43 +
  44 With the `--stdin-packs` option, generate the new commit graph by
  45 walking objects only in the specified pack-indexes. (Cannot be combined
  46 with `--stdin-commits` or `--reachable`.)
  47 +
  48 With the `--stdin-commits` option, generate the new commit graph by
  49 walking commits starting at the commits specified in stdin as a list
  50 of OIDs in hex, one OID per line. (Cannot be combined with
  51 `--stdin-packs` or `--reachable`.)
  52 +
  53 With the `--reachable` option, generate the new commit graph by walking
  54 commits starting at all refs. (Cannot be combined with `--stdin-commits`
  55 or `--stdin-packs`.)
  56 +
  57 With the `--append` option, include all commits that are present in the
  58 existing commit-graph file.
  59 +
  60 With the `--split` option, write the commit-graph as a chain of multiple
  61 commit-graph files stored in `<dir>/info/commit-graphs`. The new commits
  62 not already in the commit-graph are added in a new "tip" file. This file
  63 is merged with the existing file if the following merge conditions are
  64 met:
  65 +
  66 * If `--size-multiple=<X>` is not specified, let `X` equal 2. If the new
  67 tip file would have `N` commits and the previous tip has `M` commits and
  68 `X` times `N` is greater than  `M`, instead merge the two files into a
  69 single file.
  70 +
  71 * If `--max-commits=<M>` is specified with `M` a positive integer, and the
  72 new tip file would have more than `M` commits, then instead merge the new
  73 tip with the previous tip.
  74 +
  75 Finally, if `--expire-time=<datetime>` is not specified, let `datetime`
  76 be the current time. After writing the split commit-graph, delete all
  77 unused commit-graph whose modified times are older than `datetime`.
  78
  79 'verify'::
  80
  81 Read the commit-graph file and verify its contents against the object
  82 database. Used to check for corrupted data.
  83 +
  84 With the `--shallow` option, only check the tip commit-graph file in
  85 a chain of split commit-graphs.
  86
  87
  88 EXAMPLES
  89 --------
  90
  91 * Write a commit-graph file for the packed commits in your local `.git`
  92   directory.
  93 +
  94 ------------------------------------------------
  95 $ git commit-graph write
  96 ------------------------------------------------
  97
  98 * Write a commit-graph file, extending the current commit-graph file
  99   using commits in `<pack-index>`.
 100 +
 101 ------------------------------------------------
 102 $ echo <pack-index> | git commit-graph write --stdin-packs
 103 ------------------------------------------------
 104
 105 * Write a commit-graph file containing all reachable commits.
 106 +
 107 ------------------------------------------------
 108 $ git show-ref -s | git commit-graph write --stdin-commits
 109 ------------------------------------------------
 110
 111 * Write a commit-graph file containing all commits in the current
 112   commit-graph file along with those reachable from `HEAD`.
 113 +
 114 ------------------------------------------------
 115 $ git rev-parse HEAD | git commit-graph write --stdin-commits --append
 116 ------------------------------------------------
 117
 118
 119 GIT
 120 ---
 121 Part of the linkgit:git[1] suite