GIT-INDEX-PACK(1) Git Manual GIT-INDEX-PACK(1)
NAME
git-index-pack - Build pack index file for an existing packed archive
SYNOPSIS
git index-pack [-v] [-o <index-file>] [--[no-]rev-index] <pack-file>
git index-pack --stdin [--fix-thin] [--keep] [-v] [-o <index-file>]
[--[no-]rev-index] [<pack-file>]
DESCRIPTION
Reads a packed archive (.pack) from the specified file, builds a pack
index file (.idx) for it, and optionally writes a reverse-index (.rev)
for the specified pack. The packed archive, together with the pack
index, can then be placed in the objects/pack/ directory of a Git
repository.
OPTIONS
-v
Be verbose about what is going on, including progress status.
-o <index-file>
Write the generated pack index into the specified file. Without
this option the name of pack index file is constructed from the
name of packed archive file by replacing .pack with .idx (and the
program fails if the name of packed archive does not end with
.pack).
--[no-]rev-index
When this flag is provided, generate a reverse index (a .rev file)
corresponding to the given pack. If --verify is given, ensure that
the existing reverse index is correct. Takes precedence over
pack.writeReverseIndex.
--stdin
When this flag is provided, the pack is read from stdin instead and
a copy is then written to <pack-file>. If <pack-file> is not
specified, the pack is written to objects/pack/ directory of the
current Git repository with a default name determined from the pack
content. If <pack-file> is not specified consider using --keep to
prevent a race condition between this process and git repack.
--fix-thin
Fix a "thin" pack produced by git pack-objects --thin (see git-
pack-objects(1) for details) by adding the excluded objects the
deltified objects are based on to the pack. This option only makes
sense in conjunction with --stdin.
--keep
Before moving the index into its final destination create an empty
.keep file for the associated pack file. This option is usually
necessary with --stdin to prevent a simultaneous git repack process
from deleting the newly constructed pack and index before refs can
be updated to use objects contained in the pack.
--keep=<msg>
Like --keep, create a .keep file before moving the index into its
final destination. However, instead of creating an empty file place
<msg> followed by an LF into the .keep file. The <msg> message can
later be searched for within all .keep files to locate any which
have outlived their usefulness.
--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.
--strict
Die, if the pack contains broken objects or links.
--progress-title
For internal use only.
Set the title of the progress bar. The title is "Receiving objects"
by default and "Indexing objects" when --stdin is specified.
--check-self-contained-and-connected
Die if the pack contains broken links. For internal use only.
--fsck-objects
For internal use only.
Die if the pack contains broken objects. If the pack contains a
tree pointing to a .gitmodules blob that does not exist, prints the
hash of that blob (for the caller to check) after the hash that
goes into the name of the pack/idx file (see "Notes").
--threads=<n>
Specifies the number of threads to spawn when resolving deltas.
This requires that index-pack 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 use maximum 3 threads.
--max-input-size=<size>
Die, if the pack is larger than <size>.
--object-format=<hash-algorithm>
Specify the given object format (hash algorithm) for the pack. The
valid values are sha1 and (if enabled) sha256. The default is the
algorithm for the current repository (set by
extensions.objectFormat), or sha1 if no value is set or outside a
repository.
This option cannot be used with --stdin.
Note: At present, there is no interoperability between SHA-256
repositories and SHA-1 repositories.
Historically, we warned that SHA-256 repositories may later need
backward incompatible changes when we introduce such interoperability
features. Today, we only expect compatible changes. Furthermore, if
such changes prove to be necessary, it can be expected that SHA-256
repositories created with today's Git will be usable by future versions
of Git without data loss.
--promisor[=<message>]
Before committing the pack-index, create a .promisor file for this
pack. Particularly helpful when writing a promisor pack with
--fix-thin since the name of the pack is not final until the pack
has been fully written. If a <message> is provided, then that
content will be written to the .promisor file for future reference.
See partial clone[1] for more information.
NOTES
Once the index has been created, the hash that goes into the name of
the pack/idx file is printed to stdout. If --stdin was also used then
this is prefixed by either "pack\t", or "keep\t" if a new .keep file
was successfully created. This is useful to remove a .keep file used as
a lock to prevent the race with git repack mentioned above.
GIT
Part of the git(1) suite
NOTES
1. partial clone
file:///usr/share/doc/git/technical/partial-clone.html
Git 2.43.5 05/31/2024 GIT-INDEX-PACK(1)
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