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chromium / external / gitster / git-htmldocs / b96f40a0cb74a86e910bb0f415c4df5182ea5ccf / . / git-index-pack.html
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Junio C Hamanob96f40a2024-08-01 00:57:25[diff] [blame^]1<!DOCTYPE html>
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441<body class="manpage">
442<div id="header">
443<h1>git-index-pack(1) Manual Page</h1>
444<h2 id="_name">NAME</h2>
445<div class="sectionbody">
446<p>git-index-pack - Build pack index file for an existing packed archive</p>
447</div>
448</div>
449<div id="content">
450<div class="sect1">
451<h2 id="_synopsis">SYNOPSIS</h2>
452<div class="sectionbody">
453<div class="verseblock">
454<pre class="content"><em>git index-pack</em> [-v] [-o &lt;index-file&gt;] [--[no-]rev-index] &lt;pack-file&gt;
455<em>git index-pack</em> --stdin [--fix-thin] [--keep] [-v] [-o &lt;index-file&gt;]
456 [--[no-]rev-index] [&lt;pack-file&gt;]</pre>
457</div>
458</div>
459</div>
460<div class="sect1">
461<h2 id="_description">DESCRIPTION</h2>
462<div class="sectionbody">
463<div class="paragraph">
464<p>Reads a packed archive (.pack) from the specified file,
465builds a pack index file (.idx) for it, and optionally writes a
466reverse-index (.rev) for the specified pack. The packed
467archive, together with the pack index, can then be placed in
468the objects/pack/ directory of a Git repository.</p>
469</div>
470</div>
471</div>
472<div class="sect1">
473<h2 id="_options">OPTIONS</h2>
474<div class="sectionbody">
475<div class="dlist">
476<dl>
477<dt class="hdlist1">-v</dt>
478<dd>
479<p>Be verbose about what is going on, including progress status.</p>
480</dd>
481<dt class="hdlist1">-o &lt;index-file&gt;</dt>
482<dd>
483<p>Write the generated pack index into the specified
484file. Without this option the name of pack index
485file is constructed from the name of packed archive
486file by replacing .pack with .idx (and the program
487fails if the name of packed archive does not end
488with .pack).</p>
489</dd>
490<dt class="hdlist1">--[no-]rev-index</dt>
491<dd>
492<p>When this flag is provided, generate a reverse index
493(a <code>.rev</code> file) corresponding to the given pack. If
494<code>--verify</code> is given, ensure that the existing
495reverse index is correct. Takes precedence over
496<code>pack.writeReverseIndex</code>.</p>
497</dd>
498<dt class="hdlist1">--stdin</dt>
499<dd>
500<p>When this flag is provided, the pack is read from stdin
501instead and a copy is then written to &lt;pack-file&gt;. If
502&lt;pack-file&gt; is not specified, the pack is written to
503objects/pack/ directory of the current Git repository with
504a default name determined from the pack content. If
505&lt;pack-file&gt; is not specified consider using --keep to
506prevent a race condition between this process and
507<em>git repack</em>.</p>
508</dd>
509<dt class="hdlist1">--fix-thin</dt>
510<dd>
511<p>Fix a "thin" pack produced by <code>git pack-objects --thin</code> (see
512<a href="git-pack-objects.html">git-pack-objects(1)</a> for details) by adding the
513excluded objects the deltified objects are based on to the
514pack. This option only makes sense in conjunction with --stdin.</p>
515</dd>
516<dt class="hdlist1">--keep</dt>
517<dd>
518<p>Before moving the index into its final destination
519create an empty .keep file for the associated pack file.
520This option is usually necessary with --stdin to prevent a
521simultaneous <em>git repack</em> process from deleting
522the newly constructed pack and index before refs can be
523updated to use objects contained in the pack.</p>
524</dd>
525<dt class="hdlist1">--keep=&lt;msg&gt;</dt>
526<dd>
527<p>Like --keep, create a .keep file before moving the index into
528its final destination. However, instead of creating an empty file
529place <em>&lt;msg&gt;</em> followed by an LF into the .keep file. The <em>&lt;msg&gt;</em>
530message can later be searched for within all .keep files to
531locate any which have outlived their usefulness.</p>
532</dd>
533<dt class="hdlist1">--index-version=&lt;version&gt;[,&lt;offset&gt;]</dt>
534<dd>
535<p>This is intended to be used by the test suite only. It allows
536to force the version for the generated pack index, and to force
53764-bit index entries on objects located above the given offset.</p>
538</dd>
539<dt class="hdlist1">--strict[=&lt;msg-id&gt;=&lt;severity&gt;&#8230;&#8203;]</dt>
540<dd>
541<p>Die, if the pack contains broken objects or links. An optional
542comma-separated list of <code>&lt;msg-id&gt;=&lt;severity&gt;</code> can be passed to change
543the severity of some possible issues, e.g.,
544 <code>--strict="missingEmail=ignore,badTagName=error"</code>. See the entry for the
545<code>fsck.&lt;msg-id&gt;</code> configuration options in <a href="git-fsck.html">git-fsck(1)</a> for more
546information on the possible values of <code>&lt;msg-id&gt;</code> and <code>&lt;severity&gt;</code>.</p>
547</dd>
548<dt class="hdlist1">--progress-title</dt>
549<dd>
550<p>For internal use only.</p>
551<div class="paragraph">
552<p>Set the title of the progress bar. The title is "Receiving objects" by
553default and "Indexing objects" when <code>--stdin</code> is specified.</p>
554</div>
555</dd>
556<dt class="hdlist1">--check-self-contained-and-connected</dt>
557<dd>
558<p>Die if the pack contains broken links. For internal use only.</p>
559</dd>
560<dt class="hdlist1">--fsck-objects[=&lt;msg-id&gt;=&lt;severity&gt;&#8230;&#8203;]</dt>
561<dd>
562<p>Die if the pack contains broken objects, but unlike <code>--strict</code>, don&#8217;t
563choke on broken links. If the pack contains a tree pointing to a
564.gitmodules blob that does not exist, prints the hash of that blob
565(for the caller to check) after the hash that goes into the name of the
566pack/idx file (see "Notes").</p>
567<div class="paragraph">
568<p>An optional comma-separated list of <code>&lt;msg-id&gt;=&lt;severity&gt;</code> can be passed to
569change the severity of some possible issues, e.g.,
570<code>--fsck-objects="missingEmail=ignore,badTagName=ignore"</code>. See the entry for the
571<code>fsck.&lt;msg-id&gt;</code> configuration options in <a href="git-fsck.html">git-fsck(1)</a> for more
572information on the possible values of <code>&lt;msg-id&gt;</code> and <code>&lt;severity&gt;</code>.</p>
573</div>
574</dd>
575<dt class="hdlist1">--threads=&lt;n&gt;</dt>
576<dd>
577<p>Specifies the number of threads to spawn when resolving
578deltas. This requires that index-pack be compiled with
579pthreads otherwise this option is ignored with a warning.
580This is meant to reduce packing time on multiprocessor
581machines. The required amount of memory for the delta search
582window is however multiplied by the number of threads.
583Specifying 0 will cause Git to auto-detect the number of CPU&#8217;s
584and use maximum 3 threads.</p>
585</dd>
586<dt class="hdlist1">--max-input-size=&lt;size&gt;</dt>
587<dd>
588<p>Die, if the pack is larger than &lt;size&gt;.</p>
589</dd>
590<dt class="hdlist1">--object-format=&lt;hash-algorithm&gt;</dt>
591<dd>
592<p>Specify the given object format (hash algorithm) for the pack. The valid
593values are <em>sha1</em> and (if enabled) <em>sha256</em>. The default is the algorithm for
594the current repository (set by <code>extensions.objectFormat</code>), or <em>sha1</em> if no
595value is set or outside a repository.</p>
596<div class="paragraph">
597<p>This option cannot be used with --stdin.</p>
598</div>
599<div class="paragraph">
600<p>Note: At present, there is no interoperability between SHA-256
601repositories and SHA-1 repositories.</p>
602</div>
603</dd>
604</dl>
605</div>
606<div class="paragraph">
607<p>Historically, we warned that SHA-256 repositories may later need
608backward incompatible changes when we introduce such interoperability
609features. Today, we only expect compatible changes. Furthermore, if such
610changes prove to be necessary, it can be expected that SHA-256 repositories
611created with today&#8217;s Git will be usable by future versions of Git
612without data loss.</p>
613</div>
614<div class="dlist">
615<dl>
616<dt class="hdlist1">--promisor[=&lt;message&gt;]</dt>
617<dd>
618<p>Before committing the pack-index, create a .promisor file for this
619pack. Particularly helpful when writing a promisor pack with --fix-thin
620since the name of the pack is not final until the pack has been fully
621written. If a <code>&lt;message&gt;</code> is provided, then that content will be
622written to the .promisor file for future reference. See
623<a href="technical/partial-clone.html">partial clone</a> for more information.</p>
624</dd>
625</dl>
626</div>
627</div>
628</div>
629<div class="sect1">
630<h2 id="_notes">NOTES</h2>
631<div class="sectionbody">
632<div class="paragraph">
633<p>Once the index has been created, the hash that goes into the name of
634the pack/idx file is printed to stdout. If --stdin was
635also used then this is prefixed by either "pack\t", or "keep\t" if a
636new .keep file was successfully created. This is useful to remove a
637.keep file used as a lock to prevent the race with <em>git repack</em>
638mentioned above.</p>
639</div>
640</div>
641</div>
642<div class="sect1">
643<h2 id="_git">GIT</h2>
644<div class="sectionbody">
645<div class="paragraph">
646<p>Part of the <a href="git.html">git(1)</a> suite</p>
647</div>
648</div>
649</div>
650</div>
651<div id="footer">
652<div id="footer-text">
653Last updated 2024-02-08 15:45:59 -0800
654</div>
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