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Diffstat (limited to 'Documentation/git-pack-objects.txt')
| -rw-r--r-- | Documentation/git-pack-objects.txt | 66 |
1 files changed, 37 insertions, 29 deletions
diff --git a/Documentation/git-pack-objects.txt b/Documentation/git-pack-objects.txt index 65eff66afe..473a16135a 100644 --- a/Documentation/git-pack-objects.txt +++ b/Documentation/git-pack-objects.txt @@ -13,13 +13,14 @@ SYNOPSIS [--no-reuse-delta] [--delta-base-offset] [--non-empty] [--local] [--incremental] [--window=<n>] [--depth=<n>] [--revs [--unpacked | --all]] [--stdout | base-name] - [--keep-true-parents] < object-list + [--shallow] [--keep-true-parents] < object-list DESCRIPTION ----------- -Reads list of objects from the standard input, and writes a packed -archive with specified base-name, or to the standard output. +Reads list of objects from the standard input, and writes either one or +more packed archives with the specified base-name to disk, or a packed +archive to the standard output. A packed archive is an efficient way to transfer a set of objects between two repositories as well as an access efficient archival @@ -35,7 +36,7 @@ A pack index file (.idx) is generated for fast, random access to the objects in the pack. Placing both the index file (.idx) and the packed archive (.pack) in the pack/ subdirectory of $GIT_OBJECT_DIRECTORY (or any of the directories on $GIT_ALTERNATE_OBJECT_DIRECTORIES) -enables git to read from the pack archive. +enables Git to read from the pack archive. The 'git unpack-objects' command can read the packed archive and expand the objects contained in the pack into "one-file @@ -47,12 +48,11 @@ transport by their peers. OPTIONS ------- base-name:: - Write into a pair of files (.pack and .idx), using + Write into pairs of files (.pack and .idx), using <base-name> to determine the name of the created file. - When this option is used, the two files are written in - <base-name>-<SHA1>.{pack,idx} files. <SHA1> is a hash - of the sorted object names to make the resulting filename - based on the pack content, and written to the standard + When this option is used, the two files in a pair are written in + <base-name>-<SHA-1>.{pack,idx} files. <SHA-1> is a hash + based on the pack content and is written to the standard output of the command. --stdout:: @@ -65,6 +65,8 @@ base-name:: the same way as 'git rev-list' with the `--objects` flag uses its `commit` arguments to build the list of objects it outputs. The objects on the resulting list are packed. + Besides revisions, `--not` or `--shallow <SHA-1>` lines are + also accepted. --unpacked:: This implies `--revs`. When processing the list of @@ -80,7 +82,7 @@ base-name:: --include-tag:: Include unasked-for annotated tags if the object they reference was included in the resulting packfile. This - can be useful to send new tags to native git clients. + can be useful to send new tags to native Git clients. --window=<n>:: --depth=<n>:: @@ -103,19 +105,24 @@ base-name:: out of memory with a large window, but still be able to take advantage of the large window for the smaller objects. The size can be suffixed with "k", "m", or "g". - `--window-memory=0` makes memory usage unlimited, which is the - default. + `--window-memory=0` makes memory usage unlimited. The default + is taken from the `pack.windowMemory` configuration variable. --max-pack-size=<n>:: - Maximum size of each output pack file. The size can be suffixed with + In unusual scenarios, you may not be able to create files + larger than a certain size on your filesystem, and this option + can be used to tell the command to split the output packfile + into multiple independent packfiles, each not larger than the + given size. The size can be suffixed with "k", "m", or "g". The minimum size allowed is limited to 1 MiB. - If specified, multiple packfiles may be created. + This option + prevents the creation of a bitmap index. The default is unlimited, unless the config variable `pack.packSizeLimit` is set. --honor-pack-keep:: This flag causes an object already in a local pack that - has a .keep file to be ignored, even if it it would have + has a .keep file to be ignored, even if it would have otherwise been packed. --incremental:: @@ -185,20 +192,30 @@ base-name:: option only makes sense in conjunction with --stdout. + Note: A thin pack violates the packed archive format by omitting -required objects and is thus unusable by git without making it +required objects and is thus unusable by Git without making it self-contained. Use `git index-pack --fix-thin` (see linkgit:git-index-pack[1]) to restore the self-contained property. +--shallow:: + Optimize a pack that will be provided to a client with a shallow + repository. This option, combined with --thin, can result in a + smaller pack at the cost of speed. + --delta-base-offset:: - A packed archive can express base object of a delta as - either 20-byte object name or as an offset in the - stream, but older version of git does not understand the + A packed archive can express the base object of a delta as + either a 20-byte object name or as an offset in the + stream, but ancient versions of Git don't understand the latter. By default, 'git pack-objects' only uses the former format for better compatibility. This option allows the command to use the latter format for compactness. Depending on the average delta chain length, this option typically shrinks the resulting packfile by 3-5 per-cent. ++ +Note: Porcelain commands such as `git gc` (see linkgit:git-gc[1]), +`git repack` (see linkgit:git-repack[1]) pass this option by default +in modern Git when they put objects in your repository into pack files. +So does `git bundle` (see linkgit:git-bundle[1]) when it creates a bundle. --threads=<n>:: Specifies the number of threads to spawn when searching for best @@ -207,7 +224,7 @@ self-contained. Use `git index-pack --fix-thin` This is meant to reduce packing time on multiprocessor machines. The required amount of memory for the delta search window is however multiplied by the number of threads. - Specifying 0 will cause git to auto-detect the number of CPU's + Specifying 0 will cause Git to auto-detect the number of CPU's and set the number of threads accordingly. --index-version=<version>[,<offset>]:: @@ -219,15 +236,6 @@ self-contained. Use `git index-pack --fix-thin` With this option, parents that are hidden by grafts are packed nevertheless. - -Author ------- -Written by Linus Torvalds <torvalds@osdl.org> - -Documentation -------------- -Documentation by Junio C Hamano - SEE ALSO -------- linkgit:git-rev-list[1] |