git-commit-vandalism/Documentation/git-multi-pack-index.txt
Derrick Stolee 3ce4ca0a56 multi-pack-index: respect repack.packKeptObjects=false
When selecting a batch of pack-files to repack in the "git
multi-pack-index repack" command, Git should respect the
repack.packKeptObjects config option. When false, this option says that
the pack-files with an associated ".keep" file should not be repacked.
This config value is "false" by default.

There are two cases for selecting a batch of objects. The first is the
case where the input batch-size is zero, which specifies "repack
everything". The second is with a non-zero batch size, which selects
pack-files using a greedy selection criteria. Both of these cases are
updated and tested.

Reported-by: Son Luong Ngoc <sluongng@gmail.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-05-10 09:50:55 -07:00

96 lines
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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] <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.
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. If the total size
does not reach the batch size, 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 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