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05eb811aa1
* np/pack: add the capability for index-pack to read from a stream index-pack: compare only the first 20-bytes of the key. git-repack: repo.usedeltabaseoffset pack-objects: document --delta-base-offset option allow delta data reuse even if base object is a preferred base zap a debug remnant let the GIT native protocol use offsets to delta base when possible make pack data reuse compatible with both delta types make git-pack-objects able to create deltas with offset to base teach git-index-pack about deltas with offset to base teach git-unpack-objects about deltas with offset to base introduce delta objects with offset to base
100 lines
2.8 KiB
Text
100 lines
2.8 KiB
Text
git-repack(1)
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=============
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NAME
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----
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git-repack - Script used to pack a repository from a collection of
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objects into pack files.
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SYNOPSIS
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--------
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'git-repack' [-a] [-d] [-f] [-l] [-n] [-q] [--window=N] [--depth=N]
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DESCRIPTION
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-----------
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This script is used to combine all objects that do not currently
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reside in a "pack", into a pack.
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A pack is a collection of objects, individually compressed, with
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delta compression applied, stored in a single file, with an
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associated index file.
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Packs are used to reduce the load on mirror systems, backup
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engines, disk storage, etc.
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OPTIONS
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-------
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-a::
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Instead of incrementally packing the unpacked objects,
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pack everything available into a single pack.
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Especially useful when packing a repository that is used
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for a private development and there no need to worry
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about people fetching via dumb protocols from it. Use
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with '-d'.
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-d::
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After packing, if the newly created packs make some
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existing packs redundant, remove the redundant packs.
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Also runs gitlink:git-prune-packed[1].
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-l::
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Pass the `--local` option to `git pack-objects`, see
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gitlink:git-pack-objects[1].
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-f::
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Pass the `--no-reuse-delta` option to `git pack-objects`, see
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gitlink:git-pack-objects[1].
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-q::
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Pass the `-q` option to `git pack-objects`, see
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gitlink:git-pack-objects[1].
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-n::
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Do not update the server information with
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`git update-server-info`.
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--window=[N], --depth=[N]::
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These two options affect how the objects contained in the pack are
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stored using delta compression. The objects are first internally
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sorted by type, size and optionally names and compared against the
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other objects within `--window` to see if using delta compression saves
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space. `--depth` limits the maximum delta depth; making it too deep
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affects the performance on the unpacker side, because delta data needs
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to be applied that many times to get to the necessary object.
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The default value for both --window and --depth is 10.
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Configuration
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-------------
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When configuration variable `repack.UseDeltaBaseOffset` is set
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for the repository, the command passes `--delta-base-offset`
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option to `git-pack-objects`; this typically results in slightly
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smaller packs, but the generated packs are incompatible with
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versions of git older than (and including) v1.4.3; do not set
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the variable in a repository that older version of git needs to
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be able to read (this includes repositories from which packs can
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be copied out over http or rsync, and people who obtained packs
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that way can try to use older git with it).
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Author
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------
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Written by Linus Torvalds <torvalds@osdl.org>
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Documentation
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--------------
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Documentation by Ryan Anderson <ryan@michonline.com>
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See Also
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--------
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gitlink:git-pack-objects[1]
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gitlink:git-prune-packed[1]
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GIT
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---
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Part of the gitlink:git[7] suite
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