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737 <h1>
738 git-index-pack(1) Manual Page
739 </h1>
740 <h2>NAME</h2>
741 <div class="sectionbody">
742 <p>git-index-pack -
743 Build pack index file for an existing packed archive
744 </p>
745 </div>
746 </div>
747 <div id="content">
748 <div class="sect1">
749 <h2 id="_synopsis">SYNOPSIS</h2>
750 <div class="sectionbody">
751 <div class="verseblock">
752 <pre class="content"><em>git index-pack</em> [-v] [-o &lt;index-file&gt;] [--[no-]rev-index] &lt;pack-file&gt;
753 <em>git index-pack</em> --stdin [--fix-thin] [--keep] [-v] [-o &lt;index-file&gt;]
754 [--[no-]rev-index] [&lt;pack-file&gt;]</pre>
755 <div class="attribution">
756 </div></div>
757 </div>
758 </div>
759 <div class="sect1">
760 <h2 id="_description">DESCRIPTION</h2>
761 <div class="sectionbody">
762 <div class="paragraph"><p>Reads a packed archive (.pack) from the specified file, and
763 builds a pack index file (.idx) for it. Optionally writes a
764 reverse-index (.rev) for the specified pack. The packed
765 archive together with the pack index can then be placed in
766 the objects/pack/ directory of a Git repository.</p></div>
767 </div>
768 </div>
769 <div class="sect1">
770 <h2 id="_options">OPTIONS</h2>
771 <div class="sectionbody">
772 <div class="dlist"><dl>
773 <dt class="hdlist1">
775 </dt>
776 <dd>
778 Be verbose about what is going on, including progress status.
779 </p>
780 </dd>
781 <dt class="hdlist1">
782 -o &lt;index-file&gt;
783 </dt>
784 <dd>
786 Write the generated pack index into the specified
787 file. Without this option the name of pack index
788 file is constructed from the name of packed archive
789 file by replacing .pack with .idx (and the program
790 fails if the name of packed archive does not end
791 with .pack).
792 </p>
793 </dd>
794 <dt class="hdlist1">
795 --[no-]rev-index
796 </dt>
797 <dd>
799 When this flag is provided, generate a reverse index
800 (a <code>.rev</code> file) corresponding to the given pack. If
801 <code>--verify</code> is given, ensure that the existing
802 reverse index is correct. Takes precedence over
803 <code>pack.writeReverseIndex</code>.
804 </p>
805 </dd>
806 <dt class="hdlist1">
807 --stdin
808 </dt>
809 <dd>
811 When this flag is provided, the pack is read from stdin
812 instead and a copy is then written to &lt;pack-file&gt;. If
813 &lt;pack-file&gt; is not specified, the pack is written to
814 objects/pack/ directory of the current Git repository with
815 a default name determined from the pack content. If
816 &lt;pack-file&gt; is not specified consider using --keep to
817 prevent a race condition between this process and
818 <em>git repack</em>.
819 </p>
820 </dd>
821 <dt class="hdlist1">
822 --fix-thin
823 </dt>
824 <dd>
826 Fix a "thin" pack produced by <code>git pack-objects --thin</code> (see
827 <a href="git-pack-objects.html">git-pack-objects(1)</a> for details) by adding the
828 excluded objects the deltified objects are based on to the
829 pack. This option only makes sense in conjunction with --stdin.
830 </p>
831 </dd>
832 <dt class="hdlist1">
833 --keep
834 </dt>
835 <dd>
837 Before moving the index into its final destination
838 create an empty .keep file for the associated pack file.
839 This option is usually necessary with --stdin to prevent a
840 simultaneous <em>git repack</em> process from deleting
841 the newly constructed pack and index before refs can be
842 updated to use objects contained in the pack.
843 </p>
844 </dd>
845 <dt class="hdlist1">
846 --keep=&lt;msg&gt;
847 </dt>
848 <dd>
850 Like --keep create a .keep file before moving the index into
851 its final destination, but rather than creating an empty file
852 place <em>&lt;msg&gt;</em> followed by an LF into the .keep file. The <em>&lt;msg&gt;</em>
853 message can later be searched for within all .keep files to
854 locate any which have outlived their usefulness.
855 </p>
856 </dd>
857 <dt class="hdlist1">
858 --index-version=&lt;version&gt;[,&lt;offset&gt;]
859 </dt>
860 <dd>
862 This is intended to be used by the test suite only. It allows
863 to force the version for the generated pack index, and to force
864 64-bit index entries on objects located above the given offset.
865 </p>
866 </dd>
867 <dt class="hdlist1">
868 --strict
869 </dt>
870 <dd>
872 Die, if the pack contains broken objects or links.
873 </p>
874 </dd>
875 <dt class="hdlist1">
876 --progress-title
877 </dt>
878 <dd>
880 For internal use only.
881 </p>
882 <div class="paragraph"><p>Set the title of the progress bar. The title is "Receiving objects" by
883 default and "Indexing objects" when <code>--stdin</code> is specified.</p></div>
884 </dd>
885 <dt class="hdlist1">
886 --check-self-contained-and-connected
887 </dt>
888 <dd>
890 Die if the pack contains broken links. For internal use only.
891 </p>
892 </dd>
893 <dt class="hdlist1">
894 --fsck-objects
895 </dt>
896 <dd>
898 For internal use only.
899 </p>
900 <div class="paragraph"><p>Die if the pack contains broken objects. If the pack contains a tree
901 pointing to a .gitmodules blob that does not exist, prints the hash of
902 that blob (for the caller to check) after the hash that goes into the
903 name of the pack/idx file (see "Notes").</p></div>
904 </dd>
905 <dt class="hdlist1">
906 --threads=&lt;n&gt;
907 </dt>
908 <dd>
910 Specifies the number of threads to spawn when resolving
911 deltas. This requires that index-pack be compiled with
912 pthreads otherwise this option is ignored with a warning.
913 This is meant to reduce packing time on multiprocessor
914 machines. The required amount of memory for the delta search
915 window is however multiplied by the number of threads.
916 Specifying 0 will cause Git to auto-detect the number of CPU&#8217;s
917 and use maximum 3 threads.
918 </p>
919 </dd>
920 <dt class="hdlist1">
921 --max-input-size=&lt;size&gt;
922 </dt>
923 <dd>
925 Die, if the pack is larger than &lt;size&gt;.
926 </p>
927 </dd>
928 <dt class="hdlist1">
929 --object-format=&lt;hash-algorithm&gt;
930 </dt>
931 <dd>
933 Specify the given object format (hash algorithm) for the pack. The valid
934 values are <em>sha1</em> and (if enabled) <em>sha256</em>. The default is the algorithm for
935 the current repository (set by <code>extensions.objectFormat</code>), or <em>sha1</em> if no
936 value is set or outside a repository.
937 </p>
938 <div class="paragraph"><p>This option cannot be used with --stdin.</p></div>
939 <div class="paragraph"><p>Note: At present, there is no interoperability between SHA-256
940 repositories and SHA-1 repositories.</p></div>
941 </dd>
942 </dl></div>
943 <div class="paragraph"><p>Historically, we warned that SHA-256 repositories may later need
944 backward incompatible changes when we introduce such interoperability
945 features. Today, we only expect compatible changes. Furthermore, if such
946 changes prove to be necessary, it can be expected that SHA-256 repositories
947 created with today&#8217;s Git will be usable by future versions of Git
948 without data loss.</p></div>
949 <div class="dlist"><dl>
950 <dt class="hdlist1">
951 --promisor[=&lt;message&gt;]
952 </dt>
953 <dd>
955 Before committing the pack-index, create a .promisor file for this
956 pack. Particularly helpful when writing a promisor pack with --fix-thin
957 since the name of the pack is not final until the pack has been fully
958 written. If a <code>&lt;message&gt;</code> is provided, then that content will be
959 written to the .promisor file for future reference. See
960 <a href="technical/partial-clone.html">partial clone</a> for more information.
961 </p>
962 </dd>
963 </dl></div>
964 </div>
965 </div>
966 <div class="sect1">
967 <h2 id="_notes">NOTES</h2>
968 <div class="sectionbody">
969 <div class="paragraph"><p>Once the index has been created, the hash that goes into the name of
970 the pack/idx file is printed to stdout. If --stdin was
971 also used then this is prefixed by either "pack\t", or "keep\t" if a
972 new .keep file was successfully created. This is useful to remove a
973 .keep file used as a lock to prevent the race with <em>git repack</em>
974 mentioned above.</p></div>
975 </div>
976 </div>
977 <div class="sect1">
978 <h2 id="_git">GIT</h2>
979 <div class="sectionbody">
980 <div class="paragraph"><p>Part of the <a href="git.html">git(1)</a> suite</p></div>
981 </div>
982 </div>
983 </div>
984 <div id="footnotes"><hr /></div>
985 <div id="footer">
986 <div id="footer-text">
987 Last updated
988 2022-03-27 10:29:17 PDT
989 </div>
990 </div>
991 </body>
992 </html>