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This makes both git-fetch and git-push (fetch-pack and receive-pack) safe against a possible race with aparallel git-repack -a -d that could prune the new pack while it is not yet referenced, and remove the .keep file after refs have been updated. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
94 lines
2.9 KiB
Text
94 lines
2.9 KiB
Text
git-index-pack(1)
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=================
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NAME
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----
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git-index-pack - Build pack index file for an existing packed archive
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SYNOPSIS
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--------
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'git-index-pack' [-v] [-o <index-file>] <pack-file>
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'git-index-pack' --stdin [--fix-thin] [--keep] [-v] [-o <index-file>] [<pack-file>]
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DESCRIPTION
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-----------
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Reads a packed archive (.pack) from the specified file, and
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builds a pack index file (.idx) for it. The packed archive
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together with the pack index can then be placed in the
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objects/pack/ directory of a git repository.
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OPTIONS
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-------
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-v::
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Be verbose about what is going on, including progress status.
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-o <index-file>::
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Write the generated pack index into the specified
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file. Without this option the name of pack index
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file is constructed from the name of packed archive
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file by replacing .pack with .idx (and the program
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fails if the name of packed archive does not end
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with .pack).
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--stdin::
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When this flag is provided, the pack is read from stdin
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instead and a copy is then written to <pack-file>. If
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<pack-file> is not specified, the pack is written to
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objects/pack/ directory of the current git repository with
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a default name determined from the pack content. If
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<pack-file> is not specified consider using --keep to
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prevent a race condition between this process and
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gitlink::git-repack[1] .
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--fix-thin::
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It is possible for gitlink:git-pack-objects[1] to build
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"thin" pack, which records objects in deltified form based on
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objects not included in the pack to reduce network traffic.
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Those objects are expected to be present on the receiving end
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and they must be included in the pack for that pack to be self
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contained and indexable. Without this option any attempt to
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index a thin pack will fail. This option only makes sense in
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conjunction with --stdin.
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--keep::
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Before moving the index into its final destination
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create an empty .keep file for the associated pack file.
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This option is usually necessary with --stdin to prevent a
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simultaneous gitlink:git-repack[1] process from deleting
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the newly constructed pack and index before refs can be
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updated to use objects contained in the pack.
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--keep='why'::
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Like --keep create a .keep file before moving the index into
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its final destination, but rather than creating an empty file
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place 'why' followed by an LF into the .keep file. The 'why'
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message can later be searched for within all .keep files to
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locate any which have outlived their usefulness.
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Note
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----
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Once the index has been created, the list of object names is sorted
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and the SHA1 hash of that list is printed to stdout. If --stdin was
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also used then this is prefixed by either "pack\t", or "keep\t" if a
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new .keep file was successfully created. This is useful to remove a
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.keep file used as a lock to prevent the race with gitlink:git-repack[1]
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mentioned above.
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Author
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------
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Written by Sergey Vlasov <vsu@altlinux.ru>
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Documentation
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-------------
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Documentation by Sergey Vlasov
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GIT
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---
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Part of the gitlink:git[7] suite
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