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chromium / external / gitster / git-htmldocs / b358e217ee50e22d66a3a5ababe7e84c41d553c4 / . / git-index-pack.html
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442<body class="manpage">
443<div id="header">
444<h1>git-index-pack(1) Manual Page</h1>
445<h2 id="_name">NAME</h2>
446<div class="sectionbody">
447<p>git-index-pack - Build pack index file for an existing packed archive</p>
448</div>
449</div>
450<div id="content">
451<div class="sect1">
452<h2 id="_synopsis">SYNOPSIS</h2>
453<div class="sectionbody">
454<div class="verseblock">
455<pre class="content"><em>git index-pack</em> [-v] [-o &lt;index-file&gt;] [--[no-]rev-index] &lt;pack-file&gt;
456<em>git index-pack</em> --stdin [--fix-thin] [--keep] [-v] [-o &lt;index-file&gt;]
457 [--[no-]rev-index] [&lt;pack-file&gt;]</pre>
458</div>
459</div>
460</div>
461<div class="sect1">
462<h2 id="_description">DESCRIPTION</h2>
463<div class="sectionbody">
464<div class="paragraph">
465<p>Reads a packed archive (.pack) from the specified file,
466builds a pack index file (.idx) for it, and optionally writes a
467reverse-index (.rev) for the specified pack. The packed
468archive, together with the pack index, can then be placed in
469the objects/pack/ directory of a Git repository.</p>
470</div>
471</div>
472</div>
473<div class="sect1">
474<h2 id="_options">OPTIONS</h2>
475<div class="sectionbody">
476<div class="dlist">
477<dl>
478<dt class="hdlist1">-v</dt>
479<dd>
480<p>Be verbose about what is going on, including progress status.</p>
481</dd>
482<dt class="hdlist1">-o &lt;index-file&gt;</dt>
483<dd>
484<p>Write the generated pack index into the specified
485file. Without this option the name of pack index
486file is constructed from the name of packed archive
487file by replacing .pack with .idx (and the program
488fails if the name of packed archive does not end
489with .pack).</p>
490</dd>
491<dt class="hdlist1">--[no-]rev-index</dt>
492<dd>
493<p>When this flag is provided, generate a reverse index
Junio C Hamanodc392382024-10-11 18:57:29[diff] [blame]494(a .<code>rev</code> file) corresponding to the given pack. If
Junio C Hamanob96f40a2024-08-01 00:57:25[diff] [blame]495<code>--verify</code> is given, ensure that the existing
496reverse index is correct. Takes precedence over
497<code>pack.writeReverseIndex</code>.</p>
498</dd>
499<dt class="hdlist1">--stdin</dt>
500<dd>
501<p>When this flag is provided, the pack is read from stdin
502instead and a copy is then written to &lt;pack-file&gt;. If
503&lt;pack-file&gt; is not specified, the pack is written to
504objects/pack/ directory of the current Git repository with
505a default name determined from the pack content. If
506&lt;pack-file&gt; is not specified consider using --keep to
507prevent a race condition between this process and
508<em>git repack</em>.</p>
509</dd>
510<dt class="hdlist1">--fix-thin</dt>
511<dd>
Junio C Hamanodc392382024-10-11 18:57:29[diff] [blame]512<p>Fix a "thin" pack produced by <code>git</code> <code>pack-objects</code> <code>--thin</code> (see
Junio C Hamanob96f40a2024-08-01 00:57:25[diff] [blame]513<a href="git-pack-objects.html">git-pack-objects(1)</a> for details) by adding the
514excluded objects the deltified objects are based on to the
515pack. This option only makes sense in conjunction with --stdin.</p>
516</dd>
517<dt class="hdlist1">--keep</dt>
518<dd>
519<p>Before moving the index into its final destination
520create an empty .keep file for the associated pack file.
521This option is usually necessary with --stdin to prevent a
522simultaneous <em>git repack</em> process from deleting
523the newly constructed pack and index before refs can be
524updated to use objects contained in the pack.</p>
525</dd>
526<dt class="hdlist1">--keep=&lt;msg&gt;</dt>
527<dd>
528<p>Like --keep, create a .keep file before moving the index into
529its final destination. However, instead of creating an empty file
530place <em>&lt;msg&gt;</em> followed by an LF into the .keep file. The <em>&lt;msg&gt;</em>
531message can later be searched for within all .keep files to
532locate any which have outlived their usefulness.</p>
533</dd>
534<dt class="hdlist1">--index-version=&lt;version&gt;[,&lt;offset&gt;]</dt>
535<dd>
536<p>This is intended to be used by the test suite only. It allows
537to force the version for the generated pack index, and to force
53864-bit index entries on objects located above the given offset.</p>
539</dd>
540<dt class="hdlist1">--strict[=&lt;msg-id&gt;=&lt;severity&gt;&#8230;&#8203;]</dt>
541<dd>
542<p>Die, if the pack contains broken objects or links. An optional
Junio C Hamanodc392382024-10-11 18:57:29[diff] [blame]543comma-separated list of <em>&lt;msg-id&gt;</em><code>=</code><em>&lt;severity&gt;</em> can be passed to change
Junio C Hamanob96f40a2024-08-01 00:57:25[diff] [blame]544the severity of some possible issues, e.g.,
Junio C Hamanodc392382024-10-11 18:57:29[diff] [blame]545 <code>--strict=</code>"missingEmail=ignore,badTagName=error". See the entry for the
546<code>fsck.</code><em>&lt;msg-id&gt;</em> configuration options in <a href="git-fsck.html">git-fsck(1)</a> for more
547information on the possible values of <em>&lt;msg-id&gt;</em> and <em>&lt;severity&gt;</em>.</p>
Junio C Hamanob96f40a2024-08-01 00:57:25[diff] [blame]548</dd>
549<dt class="hdlist1">--progress-title</dt>
550<dd>
551<p>For internal use only.</p>
552<div class="paragraph">
553<p>Set the title of the progress bar. The title is "Receiving objects" by
554default and "Indexing objects" when <code>--stdin</code> is specified.</p>
555</div>
556</dd>
557<dt class="hdlist1">--check-self-contained-and-connected</dt>
558<dd>
559<p>Die if the pack contains broken links. For internal use only.</p>
560</dd>
561<dt class="hdlist1">--fsck-objects[=&lt;msg-id&gt;=&lt;severity&gt;&#8230;&#8203;]</dt>
562<dd>
563<p>Die if the pack contains broken objects, but unlike <code>--strict</code>, don&#8217;t
564choke on broken links. If the pack contains a tree pointing to a
565.gitmodules blob that does not exist, prints the hash of that blob
566(for the caller to check) after the hash that goes into the name of the
567pack/idx file (see "Notes").</p>
568<div class="paragraph">
Junio C Hamanodc392382024-10-11 18:57:29[diff] [blame]569<p>An optional comma-separated list of <em>&lt;msg-id&gt;</em><code>=</code><em>&lt;severity&gt;</em> can be passed to
Junio C Hamanob96f40a2024-08-01 00:57:25[diff] [blame]570change the severity of some possible issues, e.g.,
Junio C Hamanodc392382024-10-11 18:57:29[diff] [blame]571<code>--fsck-objects=</code>"missingEmail=ignore,badTagName=ignore". See the entry for the
572<code>fsck.</code><em>&lt;msg-id&gt;</em> configuration options in <a href="git-fsck.html">git-fsck(1)</a> for more
573information on the possible values of <em>&lt;msg-id&gt;</em> and <em>&lt;severity&gt;</em>.</p>
Junio C Hamanob96f40a2024-08-01 00:57:25[diff] [blame]574</div>
575</dd>
576<dt class="hdlist1">--threads=&lt;n&gt;</dt>
577<dd>
578<p>Specifies the number of threads to spawn when resolving
579deltas. This requires that index-pack be compiled with
580pthreads otherwise this option is ignored with a warning.
581This is meant to reduce packing time on multiprocessor
582machines. The required amount of memory for the delta search
583window is however multiplied by the number of threads.
584Specifying 0 will cause Git to auto-detect the number of CPU&#8217;s
585and use maximum 3 threads.</p>
586</dd>
587<dt class="hdlist1">--max-input-size=&lt;size&gt;</dt>
588<dd>
589<p>Die, if the pack is larger than &lt;size&gt;.</p>
590</dd>
591<dt class="hdlist1">--object-format=&lt;hash-algorithm&gt;</dt>
592<dd>
593<p>Specify the given object format (hash algorithm) for the pack. The valid
594values are <em>sha1</em> and (if enabled) <em>sha256</em>. The default is the algorithm for
595the current repository (set by <code>extensions.objectFormat</code>), or <em>sha1</em> if no
596value is set or outside a repository.</p>
597<div class="paragraph">
598<p>This option cannot be used with --stdin.</p>
599</div>
600<div class="paragraph">
601<p>Note: At present, there is no interoperability between SHA-256
602repositories and SHA-1 repositories.</p>
603</div>
604</dd>
605</dl>
606</div>
607<div class="paragraph">
608<p>Historically, we warned that SHA-256 repositories may later need
609backward incompatible changes when we introduce such interoperability
610features. Today, we only expect compatible changes. Furthermore, if such
611changes prove to be necessary, it can be expected that SHA-256 repositories
612created with today&#8217;s Git will be usable by future versions of Git
613without data loss.</p>
614</div>
615<div class="dlist">
616<dl>
617<dt class="hdlist1">--promisor[=&lt;message&gt;]</dt>
618<dd>
619<p>Before committing the pack-index, create a .promisor file for this
620pack. Particularly helpful when writing a promisor pack with --fix-thin
621since the name of the pack is not final until the pack has been fully
Junio C Hamanodc392382024-10-11 18:57:29[diff] [blame]622written. If a <em>&lt;message&gt;</em> is provided, then that content will be
Junio C Hamanob96f40a2024-08-01 00:57:25[diff] [blame]623written to the .promisor file for future reference. See
624<a href="technical/partial-clone.html">partial clone</a> for more information.</p>
Junio C Hamanoa54c07b2024-11-20 06:42:23[diff] [blame]625<div class="paragraph">
626<p>Also, if there are objects in the given pack that references non-promisor
627objects (in the repo), repacks those non-promisor objects into a promisor
628pack. This avoids a situation in which a repo has non-promisor objects that are
629accessible through promisor objects.</p>
630</div>
Junio C Hamano8a424712024-11-26 23:32:01[diff] [blame]631<div class="paragraph">
632<p>Requires &lt;pack-file&gt; to not be specified.</p>
633</div>
Junio C Hamanob96f40a2024-08-01 00:57:25[diff] [blame]634</dd>
635</dl>
636</div>
637</div>
638</div>
639<div class="sect1">
640<h2 id="_notes">NOTES</h2>
641<div class="sectionbody">
642<div class="paragraph">
643<p>Once the index has been created, the hash that goes into the name of
644the pack/idx file is printed to stdout. If --stdin was
645also used then this is prefixed by either "pack\t", or "keep\t" if a
646new .keep file was successfully created. This is useful to remove a
647.keep file used as a lock to prevent the race with <em>git repack</em>
648mentioned above.</p>
649</div>
650</div>
651</div>
652<div class="sect1">
653<h2 id="_git">GIT</h2>
654<div class="sectionbody">
655<div class="paragraph">
656<p>Part of the <a href="git.html">git(1)</a> suite</p>
657</div>
658</div>
659</div>
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661<div id="footer">
662<div id="footer-text">
Junio C Hamanod6a33e42025-02-18 23:45:11[diff] [blame]663Last updated 2025-02-14 21:38:14 -0800
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