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git-multi-pack-index(1)
=======================

NAME
----
git-multi-pack-index - Write and verify multi-pack-indexes


SYNOPSIS
--------
[verse]
'git multi-pack-index' [--object-dir=<dir>] [--[no-]progress]
	[--preferred-pack=<pack>] [--[no-]bitmap] <subcommand>

DESCRIPTION
-----------
Write or verify a multi-pack-index (MIDX) file.

OPTIONS
-------

--object-dir=<dir>::
	Use given directory for the location of Git objects. We check
	`<dir>/packs/multi-pack-index` for the current MIDX file, and
	`<dir>/packs` for the pack-files to index.

--[no-]progress::
	Turn progress on/off explicitly. If neither is specified, progress is
	shown if standard error is connected to a terminal.

The following subcommands are available:

write::
	Write a new MIDX file. The following options are available for
	the `write` sub-command:
+
--
	--preferred-pack=<pack>::
		Optionally specify the tie-breaking pack used when
		multiple packs contain the same object. `<pack>` must
		contain at least one object. If not given, ties are
		broken in favor of the pack with the lowest mtime.

	--[no-]bitmap::
		Control whether or not a multi-pack bitmap is written.
--

verify::
	Verify the contents of the MIDX file.

expire::
	Delete the pack-files that are tracked 	by the MIDX file, but
	have no objects referenced by the MIDX. Rewrite the MIDX file
	afterward to remove all references to these pack-files.

repack::
	Create a new pack-file containing objects in small pack-files
	referenced by the multi-pack-index. If the size given by the
	`--batch-size=<size>` argument is zero, then create a pack
	containing all objects referenced by the multi-pack-index. For
	a non-zero batch size, Select the pack-files by examining packs
	from oldest-to-newest, computing the "expected size" by counting
	the number of objects in the pack referenced by the
	multi-pack-index, then divide by the total number of objects in
	the pack and multiply by the pack size. We select packs with
	expected size below the batch size until the set of packs have
	total expected size at least the batch size, or all pack-files
	are considered. If only one pack-file is selected, then do
	nothing. If a new pack-file is created, rewrite the
	multi-pack-index to reference the new pack-file. A later run of
	'git multi-pack-index expire' will delete the pack-files that
	were part of this batch.
+
If `repack.packKeptObjects` is `false`, then any pack-files with an
associated `.keep` file will not be selected for the batch to repack.


EXAMPLES
--------

* Write a MIDX file for the packfiles in the current .git folder.
+
-----------------------------------------------
$ git multi-pack-index write
-----------------------------------------------

* Write a MIDX file for the packfiles in the current .git folder with a
corresponding bitmap.
+
-------------------------------------------------------------
$ git multi-pack-index write --preferred-pack=<pack> --bitmap
-------------------------------------------------------------

* Write a MIDX file for the packfiles in an alternate object store.
+
-----------------------------------------------
$ git multi-pack-index --object-dir <alt> write
-----------------------------------------------

* Verify the MIDX file for the packfiles in the current .git folder.
+
-----------------------------------------------
$ git multi-pack-index verify
-----------------------------------------------


SEE ALSO
--------
See link:technical/multi-pack-index.html[The Multi-Pack-Index Design
Document] and link:technical/pack-format.html[The Multi-Pack-Index
Format] for more information on the multi-pack-index feature.


GIT
---
Part of the linkgit:git[1] suite
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found ed52459a9d in https://public-inbox.org/git/9d83ad77abff76b0c9e43603295461009cefa415.1629821743.git.me@ttaylorr.com/ ||
	https://public-inbox.org/git/54600b58143f482dcddbaba5edbed70481a90c01.1627420428.git.me@ttaylorr.com/
found c9b063d31e in https://80x24.org/mirrors/git.git
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100644 c9b063d31e1df8ab8a0e0d26fdf5c963ae9a1b54	Documentation/git-multi-pack-index.txt

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100644 ed52459a9d5bd01eb537ee6a545e2ab77e69c02f	Documentation/git-multi-pack-index.txt

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