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GIT-MULTI-PACK-IN(1)               Git Manual               GIT-MULTI-PACK-IN(1)


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


       git multi-pack-index [--object-dir=<dir>] [--[no-]bitmap] <sub-command>


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


           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.

           <dir> must be an alternate of the current repository.

           Turn progress on/off explicitly. If neither is specified, progress is
           shown if standard error is connected to a terminal. Supported by
           sub-commands write, verify, expire, and `repack.

       The following subcommands are available:

           Write a new MIDX file. The following options are available for the
           write sub-command:

               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.

               Control whether or not a multi-pack bitmap is written.

               Write a multi-pack index containing only the set of
               line-delimited pack index basenames provided over stdin.

               With --bitmap, optionally specify a file which contains a "refs
               snapshot" taken prior to repacking.

               A reference snapshot is composed of line-delimited OIDs
               corresponding to the reference tips, usually taken by git repack
               prior to generating a new pack. A line may optionally start with
               a + character to indicate that the reference which corresponds to
               that OID is "preferred" (see git-config(1)'s

               The file given at <path> is expected to be readable, and can
               contain duplicates. (If a given OID is given more than once, it
               is marked as preferred if at least one instance of it begins with
               the special + marker).

           Verify the contents of the MIDX file.

           Delete the pack-files that are tracked by the MIDX file, but have no
           objects referenced by the MIDX (with the exception of .keep packs and
           cruft packs). Rewrite the MIDX file afterward to remove all
           references to these pack-files.

           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.


       o   Write a MIDX file for the packfiles in the current .git directory.

               $ git multi-pack-index write

       o   Write a MIDX file for the packfiles in the current .git directory
           with a corresponding bitmap.

               $ git multi-pack-index write --preferred-pack=<pack> --bitmap

       o   Write a MIDX file for the packfiles in an alternate object store.

               $ git multi-pack-index --object-dir <alt> write

       o   Verify the MIDX file for the packfiles in the current .git directory.

               $ git multi-pack-index verify


       See The Multi-Pack-Index Design Document[1] and gitformat-pack(5) for
       more information on the multi-pack-index feature and its file format.


       Part of the git(1) suite


        1. The Multi-Pack-Index Design Document

Git 2.38.2                         12/11/2022               GIT-MULTI-PACK-IN(1)

git 2.38.2 - Generated Mon Dec 12 07:25:14 CST 2022
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