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] [-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-object` option to `git-pack-objects`, see 66 linkgit:git-pack-objects[1]. 67 68-q:: 69 Pass the `-q` option to 'git-pack-objects'. See 70 linkgit:git-pack-objects[1]. 71 72-n:: 73 Do not update the server information with 74 'git-update-server-info'. This option skips 75 updating local catalog files needed to publish 76 this repository (or a direct copy of it) 77 over HTTP or FTP. See linkgit:git-update-server-info[1]. 78 79--window=[N]:: 80--depth=[N]:: 81 These two options affect how the objects contained in the pack are 82 stored using delta compression. The objects are first internally 83 sorted by type, size and optionally names and compared against the 84 other objects within `--window` to see if using delta compression saves 85 space. `--depth` limits the maximum delta depth; making it too deep 86 affects the performance on the unpacker side, because delta data needs 87 to be applied that many times to get to the necessary object. 88 The default value for --window is 10 and --depth is 50. 89 90--window-memory=[N]:: 91 This option provides an additional limit on top of `--window`; 92 the window size will dynamically scale down so as to not take 93 up more than N bytes in memory. This is useful in 94 repositories with a mix of large and small objects to not run 95 out of memory with a large window, but still be able to take 96 advantage of the large window for the smaller objects. The 97 size can be suffixed with "k", "m", or "g". 98 `--window-memory=0` makes memory usage unlimited, which is the 99 default. 100 101--max-pack-size=<n>:: 102 Maximum size of each output packfile, expressed in MiB. 103 If specified, multiple packfiles may be created. 104 The default is unlimited. 105 106 107Configuration 108------------- 109 110When configuration variable `repack.UseDeltaBaseOffset` is set 111for the repository, the command passes `--delta-base-offset` 112option to 'git-pack-objects'; this typically results in slightly 113smaller packs, but the generated packs are incompatible with 114versions of git older than (and including) v1.4.3; do not set 115the variable in a repository that older version of git needs to 116be able to read (this includes repositories from which packs can 117be copied out over http or rsync, and people who obtained packs 118that way can try to use older git with it). 119 120 121Author 122------ 123Written by Linus Torvalds <torvalds@osdl.org> 124 125Documentation 126-------------- 127Documentation by Ryan Anderson <ryan@michonline.com> 128 129SEE ALSO 130-------- 131linkgit:git-pack-objects[1] 132linkgit:git-prune-packed[1] 133 134GIT 135--- 136Part of the linkgit:git[1] suite