1git-repack(1) 2============= 3 4NAME 5---- 6git-repack - Pack unpacked objects in a repository 7 8 9SYNOPSIS 10-------- 11'git repack' [-a] [-A] [-d] [-f] [-F] [-l] [-n] [-q] [--window=<n>] [--depth=<n>] 12 13DESCRIPTION 14----------- 15 16This script is used to combine all objects that do not currently 17reside in a "pack", into a pack. It can also be used to re-organize 18existing packs into a single, more efficient pack. 19 20A pack is a collection of objects, individually compressed, with 21delta compression applied, stored in a single file, with an 22associated index file. 23 24Packs are used to reduce the load on mirror systems, backup 25engines, disk storage, etc. 26 27OPTIONS 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+ 39Note that users fetching over dumb protocols will have to fetch the 40whole new pack in order to get any contained object, no matter how many 41other 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 113Configuration 114------------- 115 116By default, the command passes `--delta-base-offset` option to 117'git pack-objects'; this typically results in slightly smaller packs, 118but the generated packs are incompatible with versions of Git older than 119version 1.4.4. If you need to share your repository with such ancient Git 120versions, either directly or via the dumb http or rsync protocol, then you 121need to set the configuration variable `repack.UseDeltaBaseOffset` to 122"false" and repack. Access from old Git versions over the native protocol 123is unaffected by this option as the conversion is performed on the fly 124as needed in that case. 125 126 127Author 128------ 129Written by Linus Torvalds <torvalds@osdl.org> 130 131Documentation 132-------------- 133Documentation by Ryan Anderson <ryan@michonline.com> 134 135SEE ALSO 136-------- 137linkgit:git-pack-objects[1] 138linkgit:git-prune-packed[1] 139 140GIT 141--- 142Part of the linkgit:git[1] suite