mirror of
https://github.com/git/git.git
synced 2024-12-13 20:06:31 +08:00
4875c9791e
Teach opt_parse_list_objects_filter() to take --no-filter option and to free the contents of struct filter_options. This command line argument will be automatically inherited by commands using OPT_PARSE_LIST_OBJECTS_FILTER(); this includes pack-objects. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
268 lines
10 KiB
Plaintext
268 lines
10 KiB
Plaintext
git-pack-objects(1)
|
|
===================
|
|
|
|
NAME
|
|
----
|
|
git-pack-objects - Create a packed archive of objects
|
|
|
|
|
|
SYNOPSIS
|
|
--------
|
|
[verse]
|
|
'git pack-objects' [-q | --progress | --all-progress] [--all-progress-implied]
|
|
[--no-reuse-delta] [--delta-base-offset] [--non-empty]
|
|
[--local] [--incremental] [--window=<n>] [--depth=<n>]
|
|
[--revs [--unpacked | --all]]
|
|
[--stdout [--filter=<filter-spec>] | base-name]
|
|
[--shallow] [--keep-true-parents] < object-list
|
|
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
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
|
|
format. In a packed archive, an object is either stored as a
|
|
compressed whole or as a difference from some other object.
|
|
The latter is often called a delta.
|
|
|
|
The packed archive format (.pack) is designed to be self-contained
|
|
so that it can be unpacked without any further information. Therefore,
|
|
each object that a delta depends upon must be present within the pack.
|
|
|
|
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.
|
|
|
|
The 'git unpack-objects' command can read the packed archive and
|
|
expand the objects contained in the pack into "one-file
|
|
one-object" format; this is typically done by the smart-pull
|
|
commands when a pack is created on-the-fly for efficient network
|
|
transport by their peers.
|
|
|
|
|
|
OPTIONS
|
|
-------
|
|
base-name::
|
|
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 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::
|
|
Write the pack contents (what would have been written to
|
|
.pack file) out to the standard output.
|
|
|
|
--revs::
|
|
Read the revision arguments from the standard input, instead of
|
|
individual object names. The revision arguments are processed
|
|
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
|
|
revision arguments read from the standard input, limit
|
|
the objects packed to those that are not already packed.
|
|
|
|
--all::
|
|
This implies `--revs`. In addition to the list of
|
|
revision arguments read from the standard input, pretend
|
|
as if all refs under `refs/` are specified to be
|
|
included.
|
|
|
|
--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.
|
|
|
|
--window=<n>::
|
|
--depth=<n>::
|
|
These two options affect how the objects contained in
|
|
the pack are stored using delta compression. The
|
|
objects are first internally sorted by type, size and
|
|
optionally names and compared against the other objects
|
|
within --window to see if using delta compression saves
|
|
space. --depth limits the maximum delta depth; making
|
|
it too deep affects the performance on the unpacker
|
|
side, because delta data needs to be applied that many
|
|
times to get to the necessary object.
|
|
The default value for --window is 10 and --depth is 50.
|
|
|
|
--window-memory=<n>::
|
|
This option provides an additional limit on top of `--window`;
|
|
the window size will dynamically scale down so as to not take
|
|
up more than '<n>' bytes in memory. This is useful in
|
|
repositories with a mix of large and small objects to not run
|
|
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. The default
|
|
is taken from the `pack.windowMemory` configuration variable.
|
|
|
|
--max-pack-size=<n>::
|
|
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.
|
|
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 would have
|
|
otherwise been packed.
|
|
|
|
--incremental::
|
|
This flag causes an object already in a pack to be ignored
|
|
even if it would have otherwise been packed.
|
|
|
|
--local::
|
|
This flag causes an object that is borrowed from an alternate
|
|
object store to be ignored even if it would have otherwise been
|
|
packed.
|
|
|
|
--non-empty::
|
|
Only create a packed archive if it would contain at
|
|
least one object.
|
|
|
|
--progress::
|
|
Progress status is reported on the standard error stream
|
|
by default when it is attached to a terminal, unless -q
|
|
is specified. This flag forces progress status even if
|
|
the standard error stream is not directed to a terminal.
|
|
|
|
--all-progress::
|
|
When --stdout is specified then progress report is
|
|
displayed during the object count and compression phases
|
|
but inhibited during the write-out phase. The reason is
|
|
that in some cases the output stream is directly linked
|
|
to another command which may wish to display progress
|
|
status of its own as it processes incoming pack data.
|
|
This flag is like --progress except that it forces progress
|
|
report for the write-out phase as well even if --stdout is
|
|
used.
|
|
|
|
--all-progress-implied::
|
|
This is used to imply --all-progress whenever progress display
|
|
is activated. Unlike --all-progress this flag doesn't actually
|
|
force any progress display by itself.
|
|
|
|
-q::
|
|
This flag makes the command not to report its progress
|
|
on the standard error stream.
|
|
|
|
--no-reuse-delta::
|
|
When creating a packed archive in a repository that
|
|
has existing packs, the command reuses existing deltas.
|
|
This sometimes results in a slightly suboptimal pack.
|
|
This flag tells the command not to reuse existing deltas
|
|
but compute them from scratch.
|
|
|
|
--no-reuse-object::
|
|
This flag tells the command not to reuse existing object data at all,
|
|
including non deltified object, forcing recompression of everything.
|
|
This implies --no-reuse-delta. Useful only in the obscure case where
|
|
wholesale enforcement of a different compression level on the
|
|
packed data is desired.
|
|
|
|
--compression=<n>::
|
|
Specifies compression level for newly-compressed data in the
|
|
generated pack. If not specified, pack compression level is
|
|
determined first by pack.compression, then by core.compression,
|
|
and defaults to -1, the zlib default, if neither is set.
|
|
Add --no-reuse-object if you want to force a uniform compression
|
|
level on all data no matter the source.
|
|
|
|
--thin::
|
|
Create a "thin" pack by omitting the common objects between a
|
|
sender and a receiver in order to reduce network transfer. This
|
|
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
|
|
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 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
|
|
delta matches. This requires that pack-objects be compiled with
|
|
pthreads otherwise this option is ignored with a warning.
|
|
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
|
|
and set the number of threads accordingly.
|
|
|
|
--index-version=<version>[,<offset>]::
|
|
This is intended to be used by the test suite only. It allows
|
|
to force the version for the generated pack index, and to force
|
|
64-bit index entries on objects located above the given offset.
|
|
|
|
--keep-true-parents::
|
|
With this option, parents that are hidden by grafts are packed
|
|
nevertheless.
|
|
|
|
--filter=<filter-spec>::
|
|
Requires `--stdout`. Omits certain objects (usually blobs) from
|
|
the resulting packfile. See linkgit:git-rev-list[1] for valid
|
|
`<filter-spec>` forms.
|
|
|
|
--no-filter::
|
|
Turns off any previous `--filter=` argument.
|
|
|
|
--missing=<missing-action>::
|
|
A debug option to help with future "partial clone" development.
|
|
This option specifies how missing objects are handled.
|
|
+
|
|
The form '--missing=error' requests that pack-objects stop with an error if
|
|
a missing object is encountered. This is the default action.
|
|
+
|
|
The form '--missing=allow-any' will allow object traversal to continue
|
|
if a missing object is encountered. Missing objects will silently be
|
|
omitted from the results.
|
|
|
|
SEE ALSO
|
|
--------
|
|
linkgit:git-rev-list[1]
|
|
linkgit:git-repack[1]
|
|
linkgit:git-prune-packed[1]
|
|
|
|
GIT
|
|
---
|
|
Part of the linkgit:git[1] suite
|