6 git-repack - Pack unpacked objects in a repository
12 'git repack' [-a] [-A] [-d] [-f] [-F] [-l] [-n] [-q] [-b] [-m] [--window=<n>] [--depth=<n>] [--threads=<n>] [--keep-pack=<pack-name>] [--write-midx]
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.
44 Promisor packfiles are repacked separately: if there are packfiles that
45 have an associated ".promisor" file, these packfiles will be repacked
46 into another separate pack, and an empty ".promisor" file corresponding
47 to the new separate pack will be written.
50 Same as `-a`, unless `-d` is used. Then any unreachable
51 objects in a previous pack become loose, unpacked objects,
52 instead of being left in the old pack. Unreachable objects
53 are never intentionally added to a pack, even when repacking.
54 This option prevents unreachable objects from being immediately
55 deleted by way of being left in the old pack and then
56 removed. Instead, the loose unreachable objects
57 will be pruned according to normal expiry rules
58 with the next 'git gc' invocation. See linkgit:git-gc[1].
61 After packing, if the newly created packs make some
62 existing packs redundant, remove the redundant packs.
63 Also run 'git prune-packed' to remove redundant
67 Same as `-a`, unless `-d` is used. Then any unreachable objects
68 are packed into a separate cruft pack. Unreachable objects can
69 be pruned using the normal expiry rules with the next `git gc`
70 invocation (see linkgit:git-gc[1]). Incompatible with `-k`.
72 --cruft-expiration=<approxidate>::
73 Expire unreachable objects older than `<approxidate>`
74 immediately instead of waiting for the next `git gc` invocation.
75 Only useful with `--cruft -d`.
78 Pass the `--local` option to 'git pack-objects'. See
79 linkgit:git-pack-objects[1].
82 Pass the `--no-reuse-delta` option to `git-pack-objects`, see
83 linkgit:git-pack-objects[1].
86 Pass the `--no-reuse-object` option to `git-pack-objects`, see
87 linkgit:git-pack-objects[1].
91 Show no progress over the standard error stream and pass the `-q`
92 option to 'git pack-objects'. See linkgit:git-pack-objects[1].
95 Do not update the server information with
96 'git update-server-info'. This option skips
97 updating local catalog files needed to publish
98 this repository (or a direct copy of it)
99 over HTTP or FTP. See linkgit:git-update-server-info[1].
103 These two options affect how the objects contained in the pack are
104 stored using delta compression. The objects are first internally
105 sorted by type, size and optionally names and compared against the
106 other objects within `--window` to see if using delta compression saves
107 space. `--depth` limits the maximum delta depth; making it too deep
108 affects the performance on the unpacker side, because delta data needs
109 to be applied that many times to get to the necessary object.
111 The default value for --window is 10 and --depth is 50. The maximum
115 This option is passed through to `git pack-objects`.
117 --window-memory=<n>::
118 This option provides an additional limit on top of `--window`;
119 the window size will dynamically scale down so as to not take
120 up more than '<n>' bytes in memory. This is useful in
121 repositories with a mix of large and small objects to not run
122 out of memory with a large window, but still be able to take
123 advantage of the large window for the smaller objects. The
124 size can be suffixed with "k", "m", or "g".
125 `--window-memory=0` makes memory usage unlimited. The default
126 is taken from the `pack.windowMemory` configuration variable.
127 Note that the actual memory usage will be the limit multiplied
128 by the number of threads used by linkgit:git-pack-objects[1].
130 --max-pack-size=<n>::
131 Maximum size of each output pack file. The size can be suffixed with
132 "k", "m", or "g". The minimum size allowed is limited to 1 MiB.
133 If specified, multiple packfiles may be created, which also
134 prevents the creation of a bitmap index.
135 The default is unlimited, unless the config variable
136 `pack.packSizeLimit` is set. Note that this option may result in
137 a larger and slower repository; see the discussion in
138 `pack.packSizeLimit`.
141 --write-bitmap-index::
142 Write a reachability bitmap index as part of the repack. This
143 only makes sense when used with `-a`, `-A` or `-m`, as the bitmaps
144 must be able to refer to all reachable objects. This option
145 overrides the setting of `repack.writeBitmaps`. This option
146 has no effect if multiple packfiles are created, unless writing a
147 MIDX (in which case a multi-pack bitmap is created).
149 --pack-kept-objects::
150 Include objects in `.keep` files when repacking. Note that we
151 still do not delete `.keep` packs after `pack-objects` finishes.
152 This means that we may duplicate objects, but this makes the
153 option safe to use when there are concurrent pushes or fetches.
154 This option is generally only useful if you are writing bitmaps
155 with `-b` or `repack.writeBitmaps`, as it ensures that the
156 bitmapped packfile has the necessary objects.
158 --keep-pack=<pack-name>::
159 Exclude the given pack from repacking. This is the equivalent
160 of having `.keep` file on the pack. `<pack-name>` is the
161 pack file name without leading directory (e.g. `pack-123.pack`).
162 The option could be specified multiple times to keep multiple
165 --unpack-unreachable=<when>::
166 When loosening unreachable objects, do not bother loosening any
167 objects older than `<when>`. This can be used to optimize out
168 the write of any objects that would be immediately pruned by
169 a follow-up `git prune`.
173 When used with `-ad`, any unreachable objects from existing
174 packs will be appended to the end of the packfile instead of
175 being removed. In addition, any unreachable loose objects will
176 be packed (and their loose counterparts removed).
180 Pass the `--delta-islands` option to `git-pack-objects`, see
181 linkgit:git-pack-objects[1].
184 --geometric=<factor>::
185 Arrange resulting pack structure so that each successive pack
186 contains at least `<factor>` times the number of objects as the
189 `git repack` ensures this by determining a "cut" of packfiles that need
190 to be repacked into one in order to ensure a geometric progression. It
191 picks the smallest set of packfiles such that as many of the larger
192 packfiles (by count of objects contained in that pack) may be left
195 Unlike other repack modes, the set of objects to pack is determined
196 uniquely by the set of packs being "rolled-up"; in other words, the
197 packs determined to need to be combined in order to restore a geometric
200 When `--unpacked` is specified, loose objects are implicitly included in
201 this "roll-up", without respect to their reachability. This is subject
202 to change in the future. This option (implying a drastically different
203 repack mode) is not guaranteed to work with all other combinations of
204 option to `git repack`.
206 When writing a multi-pack bitmap, `git repack` selects the largest resulting
207 pack as the preferred pack for object selection by the MIDX (see
208 linkgit:git-multi-pack-index[1]).
212 Write a multi-pack index (see linkgit:git-multi-pack-index[1])
213 containing the non-redundant packs.
218 Various configuration variables affect packing, see
219 linkgit:git-config[1] (search for "pack" and "delta").
221 By default, the command passes `--delta-base-offset` option to
222 'git pack-objects'; this typically results in slightly smaller packs,
223 but the generated packs are incompatible with versions of Git older than
224 version 1.4.4. If you need to share your repository with such ancient Git
225 versions, either directly or via the dumb http protocol, then you
226 need to set the configuration variable `repack.UseDeltaBaseOffset` to
227 "false" and repack. Access from old Git versions over the native protocol
228 is unaffected by this option as the conversion is performed on the fly
229 as needed in that case.
231 Delta compression is not used on objects larger than the
232 `core.bigFileThreshold` configuration variable and on files with the
233 attribute `delta` set to false.
237 linkgit:git-pack-objects[1]
238 linkgit:git-prune-packed[1]
242 Part of the linkgit:git[1] suite