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 and there is no need to worry 35 about people fetching via dumb protocols from it. Use 36 with '-d'. This will clean up the objects that `git prune` 37 leaves behind, but `git fsck --full` shows as 38 dangling. 39 40-A:: 41 Same as `-a`, but any unreachable objects in a previous 42 pack become loose, unpacked objects, instead of being 43 left in the old pack. Unreachable objects are never 44 intentionally added to a pack, even when repacking. 45 When used with '-d', this option 46 prevents unreachable objects from being immediately 47 deleted by way of being left in the old pack and then 48 removed. Instead, the loose unreachable objects 49 will be pruned according to normal expiry rules 50 with the next 'git-gc' invocation. See linkgit:git-gc[1]. 51 52-d:: 53 After packing, if the newly created packs make some 54 existing packs redundant, remove the redundant packs. 55 Also run 'git-prune-packed' to remove redundant 56 loose object files. 57 58-l:: 59 Pass the `--local` option to 'git-pack-objects'. See 60 linkgit:git-pack-objects[1]. 61 62-f:: 63 Pass the `--no-reuse-delta` option to 'git-pack-objects'. See 64 linkgit:git-pack-objects[1]. 65 66-q:: 67 Pass the `-q` option to 'git-pack-objects'. See 68 linkgit:git-pack-objects[1]. 69 70-n:: 71 Do not update the server information with 72 'git-update-server-info'. This option skips 73 updating local catalog files needed to publish 74 this repository (or a direct copy of it) 75 over HTTP or FTP. See linkgit:git-update-server-info[1]. 76 77--window=[N]:: 78--depth=[N]:: 79 These two options affect how the objects contained in the pack are 80 stored using delta compression. The objects are first internally 81 sorted by type, size and optionally names and compared against the 82 other objects within `--window` to see if using delta compression saves 83 space. `--depth` limits the maximum delta depth; making it too deep 84 affects the performance on the unpacker side, because delta data needs 85 to be applied that many times to get to the necessary object. 86 The default value for --window is 10 and --depth is 50. 87 88--window-memory=[N]:: 89 This option provides an additional limit on top of `--window`; 90 the window size will dynamically scale down so as to not take 91 up more than N bytes in memory. This is useful in 92 repositories with a mix of large and small objects to not run 93 out of memory with a large window, but still be able to take 94 advantage of the large window for the smaller objects. The 95 size can be suffixed with "k", "m", or "g". 96 `--window-memory=0` makes memory usage unlimited, which is the 97 default. 98 99--max-pack-size=<n>:: 100 Maximum size of each output packfile, expressed in MiB. 101 If specified, multiple packfiles may be created. 102 The default is unlimited. 103 104 105Configuration 106------------- 107 108When configuration variable `repack.UseDeltaBaseOffset` is set 109for the repository, the command passes `--delta-base-offset` 110option to 'git-pack-objects'; this typically results in slightly 111smaller packs, but the generated packs are incompatible with 112versions of git older than (and including) v1.4.3; do not set 113the variable in a repository that older version of git needs to 114be able to read (this includes repositories from which packs can 115be copied out over http or rsync, and people who obtained packs 116that way can try to use older git with it). 117 118 119Author 120------ 121Written by Linus Torvalds <torvalds@osdl.org> 122 123Documentation 124-------------- 125Documentation by Ryan Anderson <ryan@michonline.com> 126 127SEE ALSO 128-------- 129linkgit:git-pack-objects[1] 130linkgit:git-prune-packed[1] 131 132GIT 133--- 134Part of the linkgit:git[1] suite