6 git-repack - Pack unpacked objects in a repository
12 'git repack' [-a] [-A] [-d] [-f] [-F] [-l] [-n] [-q] [-b] [--window=<n>] [--depth=<n>] [--threads=<n>]
17 This command is used to combine all objects that do not currently
18 reside in a "pack", into a pack. It can also be used to re-organize
19 existing packs into a single, more efficient pack.
21 A pack is a collection of objects, individually compressed, with
22 delta compression applied, stored in a single file, with an
23 associated index file.
25 Packs are used to reduce the load on mirror systems, backup
26 engines, disk storage, etc.
32 Instead of incrementally packing the unpacked objects,
33 pack everything referenced into a single pack.
34 Especially useful when packing a repository that is used
35 for private development. Use
36 with `-d`. This will clean up the objects that `git prune`
37 leaves behind, but `git fsck --full --dangling` shows as
40 Note that users fetching over dumb protocols will have to fetch the
41 whole new pack in order to get any contained object, no matter how many
42 other objects in that pack they already have locally.
45 Same as `-a`, unless `-d` is used. Then any unreachable
46 objects in a previous pack become loose, unpacked objects,
47 instead of being left in the old pack. Unreachable objects
48 are never intentionally added to a pack, even when repacking.
49 This option prevents unreachable objects from being immediately
50 deleted by way of being left in the old pack and then
51 removed. Instead, the loose unreachable objects
52 will be pruned according to normal expiry rules
53 with the next 'git gc' invocation. See linkgit:git-gc[1].
56 After packing, if the newly created packs make some
57 existing packs redundant, remove the redundant packs.
58 Also run 'git prune-packed' to remove redundant
62 Pass the `--local` option to 'git pack-objects'. See
63 linkgit:git-pack-objects[1].
66 Pass the `--no-reuse-delta` option to `git-pack-objects`, see
67 linkgit:git-pack-objects[1].
70 Pass the `--no-reuse-object` option to `git-pack-objects`, see
71 linkgit:git-pack-objects[1].
74 Pass the `-q` option to 'git pack-objects'. See
75 linkgit:git-pack-objects[1].
78 Do not update the server information with
79 'git update-server-info'. This option skips
80 updating local catalog files needed to publish
81 this repository (or a direct copy of it)
82 over HTTP or FTP. See linkgit:git-update-server-info[1].
86 These two options affect how the objects contained in the pack are
87 stored using delta compression. The objects are first internally
88 sorted by type, size and optionally names and compared against the
89 other objects within `--window` to see if using delta compression saves
90 space. `--depth` limits the maximum delta depth; making it too deep
91 affects the performance on the unpacker side, because delta data needs
92 to be applied that many times to get to the necessary object.
93 The default value for --window is 10 and --depth is 50.
96 This option is passed through to `git pack-objects`.
99 This option provides an additional limit on top of `--window`;
100 the window size will dynamically scale down so as to not take
101 up more than '<n>' bytes in memory. This is useful in
102 repositories with a mix of large and small objects to not run
103 out of memory with a large window, but still be able to take
104 advantage of the large window for the smaller objects. The
105 size can be suffixed with "k", "m", or "g".
106 `--window-memory=0` makes memory usage unlimited. The default
107 is taken from the `pack.windowMemory` configuration variable.
108 Note that the actual memory usage will be the limit multiplied
109 by the number of threads used by linkgit:git-pack-objects[1].
111 --max-pack-size=<n>::
112 Maximum size of each output pack file. The size can be suffixed with
113 "k", "m", or "g". The minimum size allowed is limited to 1 MiB.
114 If specified, multiple packfiles may be created, which also
115 prevents the creation of a bitmap index.
116 The default is unlimited, unless the config variable
117 `pack.packSizeLimit` is set.
120 --write-bitmap-index::
121 Write a reachability bitmap index as part of the repack. This
122 only makes sense when used with `-a` or `-A`, as the bitmaps
123 must be able to refer to all reachable objects. This option
124 overrides the setting of `repack.writeBitmaps`. This option
125 has no effect if multiple packfiles are created.
127 --pack-kept-objects::
128 Include objects in `.keep` files when repacking. Note that we
129 still do not delete `.keep` packs after `pack-objects` finishes.
130 This means that we may duplicate objects, but this makes the
131 option safe to use when there are concurrent pushes or fetches.
132 This option is generally only useful if you are writing bitmaps
133 with `-b` or `repack.writeBitmaps`, as it ensures that the
134 bitmapped packfile has the necessary objects.
136 --unpack-unreachable=<when>::
137 When loosening unreachable objects, do not bother loosening any
138 objects older than `<when>`. This can be used to optimize out
139 the write of any objects that would be immediately pruned by
140 a follow-up `git prune`.
144 When used with `-ad`, any unreachable objects from existing
145 packs will be appended to the end of the packfile instead of
146 being removed. In addition, any unreachable loose objects will
147 be packed (and their loose counterparts removed).
152 By default, the command passes `--delta-base-offset` option to
153 'git pack-objects'; this typically results in slightly smaller packs,
154 but the generated packs are incompatible with versions of Git older than
155 version 1.4.4. If you need to share your repository with such ancient Git
156 versions, either directly or via the dumb http protocol, then you
157 need to set the configuration variable `repack.UseDeltaBaseOffset` to
158 "false" and repack. Access from old Git versions over the native protocol
159 is unaffected by this option as the conversion is performed on the fly
160 as needed in that case.
164 linkgit:git-pack-objects[1]
165 linkgit:git-prune-packed[1]
169 Part of the linkgit:git[1] suite