git-repack.html

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 734 </head>
 735 <body class="manpage">
 736 <div id="header">
 737 <h1>
 738 git-repack(1) Manual Page
 739 </h1>
 740 <h2>NAME</h2>
 741 <div class="sectionbody">
 742 <p>git-repack -
 743    Pack unpacked objects in a repository
 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 repack</em> [-a] [-A] [-d] [-f] [-F] [-l] [-n] [-q] [-b] [-m] [--window=&lt;n&gt;] [--depth=&lt;n&gt;] [--threads=&lt;n&gt;] [--keep-pack=&lt;pack-name&gt;] [--write-midx]</pre>
 753 <div class="attribution">
 754 </div></div>
 755 </div>
 756 </div>
 757 <div class="sect1">
 758 <h2 id="_description">DESCRIPTION</h2>
 759 <div class="sectionbody">
 760 <div class="paragraph"><p>This command is used to combine all objects that do not currently
 761 reside in a "pack", into a pack.  It can also be used to re-organize
 762 existing packs into a single, more efficient pack.</p></div>
 763 <div class="paragraph"><p>A pack is a collection of objects, individually compressed, with
 764 delta compression applied, stored in a single file, with an
 765 associated index file.</p></div>
 766 <div class="paragraph"><p>Packs are used to reduce the load on mirror systems, backup
 767 engines, disk storage, etc.</p></div>
 768 </div>
 769 </div>
 770 <div class="sect1">
 771 <h2 id="_options">OPTIONS</h2>
 772 <div class="sectionbody">
 773 <div class="dlist"><dl>
 774 <dt class="hdlist1">
 775 -a
 776 </dt>
 777 <dd>
 778 <p>
 779         Instead of incrementally packing the unpacked objects,
 780         pack everything referenced into a single pack.
 781         Especially useful when packing a repository that is used
 782         for private development. Use
 783         with <code>-d</code>.  This will clean up the objects that <code>git prune</code>
 784         leaves behind, but <code>git fsck --full --dangling</code> shows as
 785         dangling.
 786 </p>
 787 <div class="paragraph"><p>Note that users fetching over dumb protocols will have to fetch the
 788 whole new pack in order to get any contained object, no matter how many
 789 other objects in that pack they already have locally.</p></div>
 790 <div class="paragraph"><p>Promisor packfiles are repacked separately: if there are packfiles that
 791 have an associated ".promisor" file, these packfiles will be repacked
 792 into another separate pack, and an empty ".promisor" file corresponding
 793 to the new separate pack will be written.</p></div>
 794 </dd>
 795 <dt class="hdlist1">
 796 -A
 797 </dt>
 798 <dd>
 799 <p>
 800         Same as <code>-a</code>, unless <code>-d</code> is used.  Then any unreachable
 801         objects in a previous pack become loose, unpacked objects,
 802         instead of being left in the old pack.  Unreachable objects
 803         are never intentionally added to a pack, even when repacking.
 804         This option prevents unreachable objects from being immediately
 805         deleted by way of being left in the old pack and then
 806         removed.  Instead, the loose unreachable objects
 807         will be pruned according to normal expiry rules
 808         with the next <em>git gc</em> invocation. See <a href="git-gc.html">git-gc(1)</a>.
 809 </p>
 810 </dd>
 811 <dt class="hdlist1">
 812 -d
 813 </dt>
 814 <dd>
 815 <p>
 816         After packing, if the newly created packs make some
 817         existing packs redundant, remove the redundant packs.
 818         Also run  <em>git prune-packed</em> to remove redundant
 819         loose object files.
 820 </p>
 821 </dd>
 822 <dt class="hdlist1">
 823 --cruft
 824 </dt>
 825 <dd>
 826 <p>
 827         Same as <code>-a</code>, unless <code>-d</code> is used. Then any unreachable objects
 828         are packed into a separate cruft pack. Unreachable objects can
 829         be pruned using the normal expiry rules with the next <code>git gc</code>
 830         invocation (see <a href="git-gc.html">git-gc(1)</a>). Incompatible with <code>-k</code>.
 831 </p>
 832 </dd>
 833 <dt class="hdlist1">
 834 --cruft-expiration=&lt;approxidate&gt;
 835 </dt>
 836 <dd>
 837 <p>
 838         Expire unreachable objects older than <code>&lt;approxidate&gt;</code>
 839         immediately instead of waiting for the next <code>git gc</code> invocation.
 840         Only useful with <code>--cruft -d</code>.
 841 </p>
 842 </dd>
 843 <dt class="hdlist1">
 844 --expire-to=&lt;dir&gt;
 845 </dt>
 846 <dd>
 847 <p>
 848         Write a cruft pack containing pruned objects (if any) to the
 849         directory <code>&lt;dir&gt;</code>. This option is useful for keeping a copy of
 850         any pruned objects in a separate directory as a backup. Only
 851         useful with <code>--cruft -d</code>.
 852 </p>
 853 </dd>
 854 <dt class="hdlist1">
 855 -l
 856 </dt>
 857 <dd>
 858 <p>
 859         Pass the <code>--local</code> option to <em>git pack-objects</em>. See
 860         <a href="git-pack-objects.html">git-pack-objects(1)</a>.
 861 </p>
 862 </dd>
 863 <dt class="hdlist1">
 864 -f
 865 </dt>
 866 <dd>
 867 <p>
 868         Pass the <code>--no-reuse-delta</code> option to <code>git-pack-objects</code>, see
 869         <a href="git-pack-objects.html">git-pack-objects(1)</a>.
 870 </p>
 871 </dd>
 872 <dt class="hdlist1">
 873 -F
 874 </dt>
 875 <dd>
 876 <p>
 877         Pass the <code>--no-reuse-object</code> option to <code>git-pack-objects</code>, see
 878         <a href="git-pack-objects.html">git-pack-objects(1)</a>.
 879 </p>
 880 </dd>
 881 <dt class="hdlist1">
 882 -q
 883 </dt>
 884 <dt class="hdlist1">
 885 --quiet
 886 </dt>
 887 <dd>
 888 <p>
 889         Show no progress over the standard error stream and pass the <code>-q</code>
 890         option to <em>git pack-objects</em>. See <a href="git-pack-objects.html">git-pack-objects(1)</a>.
 891 </p>
 892 </dd>
 893 <dt class="hdlist1">
 894 -n
 895 </dt>
 896 <dd>
 897 <p>
 898         Do not update the server information with
 899         <em>git update-server-info</em>.  This option skips
 900         updating local catalog files needed to publish
 901         this repository (or a direct copy of it)
 902         over HTTP or FTP.  See <a href="git-update-server-info.html">git-update-server-info(1)</a>.
 903 </p>
 904 </dd>
 905 <dt class="hdlist1">
 906 --window=&lt;n&gt;
 907 </dt>
 908 <dt class="hdlist1">
 909 --depth=&lt;n&gt;
 910 </dt>
 911 <dd>
 912 <p>
 913         These two options affect how the objects contained in the pack are
 914         stored using delta compression. The objects are first internally
 915         sorted by type, size and optionally names and compared against the
 916         other objects within <code>--window</code> to see if using delta compression saves
 917         space. <code>--depth</code> limits the maximum delta depth; making it too deep
 918         affects the performance on the unpacker side, because delta data needs
 919         to be applied that many times to get to the necessary object.
 920 </p>
 921 <div class="paragraph"><p>The default value for --window is 10 and --depth is 50. The maximum
 922 depth is 4095.</p></div>
 923 </dd>
 924 <dt class="hdlist1">
 925 --threads=&lt;n&gt;
 926 </dt>
 927 <dd>
 928 <p>
 929         This option is passed through to <code>git pack-objects</code>.
 930 </p>
 931 </dd>
 932 <dt class="hdlist1">
 933 --window-memory=&lt;n&gt;
 934 </dt>
 935 <dd>
 936 <p>
 937         This option provides an additional limit on top of <code>--window</code>;
 938         the window size will dynamically scale down so as to not take
 939         up more than <em>&lt;n&gt;</em> bytes in memory.  This is useful in
 940         repositories with a mix of large and small objects to not run
 941         out of memory with a large window, but still be able to take
 942         advantage of the large window for the smaller objects.  The
 943         size can be suffixed with "k", "m", or "g".
 944         <code>--window-memory=0</code> makes memory usage unlimited.  The default
 945         is taken from the <code>pack.windowMemory</code> configuration variable.
 946         Note that the actual memory usage will be the limit multiplied
 947         by the number of threads used by <a href="git-pack-objects.html">git-pack-objects(1)</a>.
 948 </p>
 949 </dd>
 950 <dt class="hdlist1">
 951 --max-pack-size=&lt;n&gt;
 952 </dt>
 953 <dd>
 954 <p>
 955         Maximum size of each output pack file. The size can be suffixed with
 956         "k", "m", or "g". The minimum size allowed is limited to 1 MiB.
 957         If specified, multiple packfiles may be created, which also
 958         prevents the creation of a bitmap index.
 959         The default is unlimited, unless the config variable
 960         <code>pack.packSizeLimit</code> is set. Note that this option may result in
 961         a larger and slower repository; see the discussion in
 962         <code>pack.packSizeLimit</code>.
 963 </p>
 964 </dd>
 965 <dt class="hdlist1">
 966 -b
 967 </dt>
 968 <dt class="hdlist1">
 969 --write-bitmap-index
 970 </dt>
 971 <dd>
 972 <p>
 973         Write a reachability bitmap index as part of the repack. This
 974         only makes sense when used with <code>-a</code>, <code>-A</code> or <code>-m</code>, as the bitmaps
 975         must be able to refer to all reachable objects. This option
 976         overrides the setting of <code>repack.writeBitmaps</code>. This option
 977         has no effect if multiple packfiles are created, unless writing a
 978         MIDX (in which case a multi-pack bitmap is created).
 979 </p>
 980 </dd>
 981 <dt class="hdlist1">
 982 --pack-kept-objects
 983 </dt>
 984 <dd>
 985 <p>
 986         Include objects in <code>.keep</code> files when repacking.  Note that we
 987         still do not delete <code>.keep</code> packs after <code>pack-objects</code> finishes.
 988         This means that we may duplicate objects, but this makes the
 989         option safe to use when there are concurrent pushes or fetches.
 990         This option is generally only useful if you are writing bitmaps
 991         with <code>-b</code> or <code>repack.writeBitmaps</code>, as it ensures that the
 992         bitmapped packfile has the necessary objects.
 993 </p>
 994 </dd>
 995 <dt class="hdlist1">
 996 --keep-pack=&lt;pack-name&gt;
 997 </dt>
 998 <dd>
 999 <p>
1000         Exclude the given pack from repacking. This is the equivalent
1001         of having <code>.keep</code> file on the pack. <code>&lt;pack-name&gt;</code> is the
1002         pack file name without leading directory (e.g. <code>pack-123.pack</code>).
1003         The option could be specified multiple times to keep multiple
1004         packs.
1005 </p>
1006 </dd>
1007 <dt class="hdlist1">
1008 --unpack-unreachable=&lt;when&gt;
1009 </dt>
1010 <dd>
1011 <p>
1012         When loosening unreachable objects, do not bother loosening any
1013         objects older than <code>&lt;when&gt;</code>. This can be used to optimize out
1014         the write of any objects that would be immediately pruned by
1015         a follow-up <code>git prune</code>.
1016 </p>
1017 </dd>
1018 <dt class="hdlist1">
1019 -k
1020 </dt>
1021 <dt class="hdlist1">
1022 --keep-unreachable
1023 </dt>
1024 <dd>
1025 <p>
1026         When used with <code>-ad</code>, any unreachable objects from existing
1027         packs will be appended to the end of the packfile instead of
1028         being removed. In addition, any unreachable loose objects will
1029         be packed (and their loose counterparts removed).
1030 </p>
1031 </dd>
1032 <dt class="hdlist1">
1033 -i
1034 </dt>
1035 <dt class="hdlist1">
1036 --delta-islands
1037 </dt>
1038 <dd>
1039 <p>
1040         Pass the <code>--delta-islands</code> option to <code>git-pack-objects</code>, see
1041         <a href="git-pack-objects.html">git-pack-objects(1)</a>.
1042 </p>
1043 </dd>
1044 <dt class="hdlist1">
1045 -g=&lt;factor&gt;
1046 </dt>
1047 <dt class="hdlist1">
1048 --geometric=&lt;factor&gt;
1049 </dt>
1050 <dd>
1051 <p>
1052         Arrange resulting pack structure so that each successive pack
1053         contains at least <code>&lt;factor&gt;</code> times the number of objects as the
1054         next-largest pack.
1055 </p>
1056 <div class="paragraph"><p><code>git repack</code> ensures this by determining a "cut" of packfiles that need
1057 to be repacked into one in order to ensure a geometric progression. It
1058 picks the smallest set of packfiles such that as many of the larger
1059 packfiles (by count of objects contained in that pack) may be left
1060 intact.</p></div>
1061 <div class="paragraph"><p>Unlike other repack modes, the set of objects to pack is determined
1062 uniquely by the set of packs being "rolled-up"; in other words, the
1063 packs determined to need to be combined in order to restore a geometric
1064 progression.</p></div>
1065 <div class="paragraph"><p>When <code>--unpacked</code> is specified, loose objects are implicitly included in
1066 this "roll-up", without respect to their reachability. This is subject
1067 to change in the future. This option (implying a drastically different
1068 repack mode) is not guaranteed to work with all other combinations of
1069 option to <code>git repack</code>.</p></div>
1070 <div class="paragraph"><p>When writing a multi-pack bitmap, <code>git repack</code> selects the largest resulting
1071 pack as the preferred pack for object selection by the MIDX (see
1072 <a href="git-multi-pack-index.html">git-multi-pack-index(1)</a>).</p></div>
1073 </dd>
1074 <dt class="hdlist1">
1075 -m
1076 </dt>
1077 <dt class="hdlist1">
1078 --write-midx
1079 </dt>
1080 <dd>
1081 <p>
1082         Write a multi-pack index (see <a href="git-multi-pack-index.html">git-multi-pack-index(1)</a>)
1083         containing the non-redundant packs.
1084 </p>
1085 </dd>
1086 </dl></div>
1087 </div>
1088 </div>
1089 <div class="sect1">
1090 <h2 id="_configuration">CONFIGURATION</h2>
1091 <div class="sectionbody">
1092 <div class="paragraph"><p>Various configuration variables affect packing, see
1093 <a href="git-config.html">git-config(1)</a> (search for "pack" and "delta").</p></div>
1094 <div class="paragraph"><p>By default, the command passes <code>--delta-base-offset</code> option to
1095 <em>git pack-objects</em>; this typically results in slightly smaller packs,
1096 but the generated packs are incompatible with versions of Git older than
1097 version 1.4.4. If you need to share your repository with such ancient Git
1098 versions, either directly or via the dumb http protocol, then you
1099 need to set the configuration variable <code>repack.UseDeltaBaseOffset</code> to
1100 "false" and repack. Access from old Git versions over the native protocol
1101 is unaffected by this option as the conversion is performed on the fly
1102 as needed in that case.</p></div>
1103 <div class="paragraph"><p>Delta compression is not used on objects larger than the
1104 <code>core.bigFileThreshold</code> configuration variable and on files with the
1105 attribute <code>delta</code> set to false.</p></div>
1106 </div>
1107 </div>
1108 <div class="sect1">
1109 <h2 id="_see_also">SEE ALSO</h2>
1110 <div class="sectionbody">
1111 <div class="paragraph"><p><a href="git-pack-objects.html">git-pack-objects(1)</a>
1112 <a href="git-prune-packed.html">git-prune-packed(1)</a></p></div>
1113 </div>
1114 </div>
1115 <div class="sect1">
1116 <h2 id="_git">GIT</h2>
1117 <div class="sectionbody">
1118 <div class="paragraph"><p>Part of the <a href="git.html">git(1)</a> suite</p></div>
1119 </div>
1120 </div>
1121 </div>
1122 <div id="footnotes"><hr /></div>
1123 <div id="footer">
1124 <div id="footer-text">
1125 Last updated
1126  2022-11-20 22:53:16 PST
1127 </div>
1128 </div>
1129 </body>
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