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synced 2026-06-19 15:39:47 +02:00
Taylor Blau
938af89260
Expose the incremental MIDX repacking mode (implemented in an earlier commit) via a new --write-midx=incremental option for `git repack`. Add "incremental" as a recognized argument to the --write-midx OPT_CALLBACK, mapping it to REPACK_WRITE_MIDX_INCREMENTAL. When this mode is active and --geometric is in use, set the midx_layer_threshold on the pack geometry so that only packs in sufficiently large tip layers are considered for repacking. Two new configuration options control the compaction behavior: - repack.midxSplitFactor (default: 2): the factor used in the geometric merging condition for MIDX layers. - repack.midxNewLayerThreshold (default: 8): the minimum number of packs in the tip MIDX layer before its packs are considered as candidates for geometric repacking. Add tests exercising the new mode across a variety of scenarios including basic geometric violations, multi-round chain integrity, branching and merging histories, cross-layer object uniqueness, and threshold-based compaction. Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
67 lines
2.8 KiB
Plaintext
67 lines
2.8 KiB
Plaintext
repack.useDeltaBaseOffset::
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By default, linkgit:git-repack[1] creates packs that use
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delta-base offset. If you need to share your repository with
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Git older than version 1.4.4, either directly or via a dumb
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protocol such as http, then you need to set this option to
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"false" and repack. Access from old Git versions over the
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native protocol are unaffected by this option.
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repack.packKeptObjects::
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If set to true, makes `git repack` act as if
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`--pack-kept-objects` was passed. See linkgit:git-repack[1] for
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details. Defaults to `false` normally, but `true` if a bitmap
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index is being written (either via `--write-bitmap-index` or
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`repack.writeBitmaps`).
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repack.useDeltaIslands::
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If set to true, makes `git repack` act as if `--delta-islands`
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was passed. Defaults to `false`.
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repack.writeBitmaps::
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When true, git will write a bitmap index when packing all
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objects to disk (e.g., when `git repack -a` is run). This
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index can speed up the "counting objects" phase of subsequent
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packs created for clones and fetches, at the cost of some disk
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space and extra time spent on the initial repack. This has
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no effect if multiple packfiles are created.
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Defaults to true on bare repos, false otherwise.
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repack.updateServerInfo::
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If set to false, linkgit:git-repack[1] will not run
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linkgit:git-update-server-info[1]. Defaults to true. Can be overridden
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when true by the `-n` option of linkgit:git-repack[1].
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repack.cruftWindow::
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repack.cruftWindowMemory::
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repack.cruftDepth::
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repack.cruftThreads::
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Parameters used by linkgit:git-pack-objects[1] when generating
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a cruft pack and the respective parameters are not given over
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the command line. See similarly named `pack.*` configuration
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variables for defaults and meaning.
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repack.midxMustContainCruft::
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When set to true, linkgit:git-repack[1] will unconditionally include
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cruft pack(s), if any, in the multi-pack index when invoked with
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`--write-midx`. When false, cruft packs are only included in the MIDX
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when necessary (e.g., because they might be required to form a
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reachability closure with MIDX bitmaps). Defaults to true.
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repack.midxSplitFactor::
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The factor used in the geometric merging condition when
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compacting incremental MIDX layers during `git repack` when
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invoked with the `--write-midx=incremental` option.
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+
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Adjacent layers are merged when the accumulated object count of the
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newer layer exceeds `1/<N>` of the object count of the next deeper
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layer. Must be at least 2. Defaults to 2.
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repack.midxNewLayerThreshold::
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The minimum number of packs in the tip MIDX layer before those
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packs are considered as candidates for geometric repacking
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during `git repack --write-midx=incremental`.
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+
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When the tip layer has fewer packs than this threshold, those packs are
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excluded from the geometric repack entirely, and are thus left
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unmodified. Must be at least 1. Defaults to 8.
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