Documentation/git-repack.txt

   1 git-repack(1)
   2 =============
   3
   4 NAME
   5 ----
   6 git-repack - Pack unpacked objects in a repository
   7
   8
   9 SYNOPSIS
  10 --------
  11 'git repack' [-a] [-A] [-d] [-f] [-F] [-l] [-n] [-q] [--window=<n>] [--depth=<n>]
  12
  13 DESCRIPTION
  14 -----------
  15
  16 This script is used to combine all objects that do not currently
  17 reside in a "pack", into a pack.  It can also be used to re-organize
  18 existing packs into a single, more efficient pack.
  19
  20 A pack is a collection of objects, individually compressed, with
  21 delta compression applied, stored in a single file, with an
  22 associated index file.
  23
  24 Packs are used to reduce the load on mirror systems, backup
  25 engines, disk storage, etc.
  26
  27 OPTIONS
  28 -------
  29
  30 -a::
  31         Instead of incrementally packing the unpacked objects,
  32         pack everything referenced into a single pack.
  33         Especially useful when packing a repository that is used
  34         for private development. Use
  35         with '-d'.  This will clean up the objects that `git prune`
  36         leaves behind, but `git fsck --full` shows as
  37         dangling.
  38 +
  39 Note that users fetching over dumb protocols will have to fetch the
  40 whole new pack in order to get any contained object, no matter how many
  41 other objects in that pack they already have locally.
  42
  43 -A::
  44         Same as `-a`, unless '-d' is used.  Then any unreachable
  45         objects in a previous pack become loose, unpacked objects,
  46         instead of being left in the old pack.  Unreachable objects
  47         are never intentionally added to a pack, even when repacking.
  48         This option prevents unreachable objects from being immediately
  49         deleted by way of being left in the old pack and then
  50         removed.  Instead, the loose unreachable objects
  51         will be pruned according to normal expiry rules
  52         with the next 'git gc' invocation. See linkgit:git-gc[1].
  53
  54 -d::
  55         After packing, if the newly created packs make some
  56         existing packs redundant, remove the redundant packs.
  57         Also run  'git prune-packed' to remove redundant
  58         loose object files.
  59
  60 -l::
  61         Pass the `--local` option to 'git pack-objects'. See
  62         linkgit:git-pack-objects[1].
  63
  64 -f::
  65         Pass the `--no-reuse-delta` option to `git-pack-objects`, see
  66         linkgit:git-pack-objects[1].
  67
  68 -F::
  69         Pass the `--no-reuse-object` option to `git-pack-objects`, see
  70         linkgit:git-pack-objects[1].
  71
  72 -q::
  73         Pass the `-q` option to 'git pack-objects'. See
  74         linkgit:git-pack-objects[1].
  75
  76 -n::
  77         Do not update the server information with
  78         'git update-server-info'.  This option skips
  79         updating local catalog files needed to publish
  80         this repository (or a direct copy of it)
  81         over HTTP or FTP.  See linkgit:git-update-server-info[1].
  82
  83 --window=<n>::
  84 --depth=<n>::
  85         These two options affect how the objects contained in the pack are
  86         stored using delta compression. The objects are first internally
  87         sorted by type, size and optionally names and compared against the
  88         other objects within `--window` to see if using delta compression saves
  89         space. `--depth` limits the maximum delta depth; making it too deep
  90         affects the performance on the unpacker side, because delta data needs
  91         to be applied that many times to get to the necessary object.
  92         The default value for --window is 10 and --depth is 50.
  93
  94 --window-memory=<n>::
  95         This option provides an additional limit on top of `--window`;
  96         the window size will dynamically scale down so as to not take
  97         up more than '<n>' bytes in memory.  This is useful in
  98         repositories with a mix of large and small objects to not run
  99         out of memory with a large window, but still be able to take
 100         advantage of the large window for the smaller objects.  The
 101         size can be suffixed with "k", "m", or "g".
 102         `--window-memory=0` makes memory usage unlimited, which is the
 103         default.
 104
 105 --max-pack-size=<n>::
 106         Maximum size of each output pack file. The size can be suffixed with
 107         "k", "m", or "g". The minimum size allowed is limited to 1 MiB.
 108         If specified,  multiple packfiles may be created.
 109         The default is unlimited, unless the config variable
 110         `pack.packSizeLimit` is set.
 111
 112
 113 Configuration
 114 -------------
 115
 116 By default, the command passes `--delta-base-offset` option to
 117 'git pack-objects'; this typically results in slightly smaller packs,
 118 but the generated packs are incompatible with versions of Git older than
 119 version 1.4.4. If you need to share your repository with such ancient Git
 120 versions, either directly or via the dumb http or rsync protocol, then you
 121 need to set the configuration variable `repack.UseDeltaBaseOffset` to
 122 "false" and repack. Access from old Git versions over the native protocol
 123 is unaffected by this option as the conversion is performed on the fly
 124 as needed in that case.
 125
 126 SEE ALSO
 127 --------
 128 linkgit:git-pack-objects[1]
 129 linkgit:git-prune-packed[1]
 130
 131 GIT
 132 ---
 133 Part of the linkgit:git[1] suite