1 <!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.1//EN"
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
3 <html xmlns=
"http://www.w3.org/1999/xhtml" xml:
lang=
"en">
5 <meta http-equiv=
"Content-Type" content=
"text/html; charset=UTF-8" />
6 <meta name=
"generator" content=
"AsciiDoc 8.5.2" />
7 <title>git-fsck(
1)
</title>
8 <style type=
"text/css">
10 p
, li
, dt
, dd
, div
, pre
, h1
, h2
, h3
, h4
, h5
, h6
{
12 border: 1px solid red;
17 margin: 1em 5% 1em 5%;
22 text-decoration: underline
;
42 h1
, h2
, h3
, h4
, h5
, h6
{
44 font-family: sans-serif
;
51 border-bottom: 2px solid silver
;
69 border: 1px solid silver
;
88 font-family: sans-serif
;
94 span#revnumber
, span#revdate
, span#revremark
{
95 font-family: sans-serif
;
99 font-family: sans-serif
;
101 border-top: 2px solid silver
;
107 padding-bottom: 0.5em;
111 padding-bottom: 0.5em;
116 margin-bottom: 1.5em;
118 div
.tableblock
, div
.imageblock
, div
.exampleblock
, div
.verseblock
,
119 div
.quoteblock
, div
.literalblock
, div
.listingblock
, div
.sidebarblock
,
120 div
.admonitionblock
{
122 margin-bottom: 1.5em;
124 div
.admonitionblock
{
126 margin-bottom: 2.0em;
131 div
.content
{ /* Block element content. */
135 /* Block element titles. */
136 div
.title
, caption
.title
{
138 font-family: sans-serif
;
142 margin-bottom: 0.5em;
148 td div
.title:first-child
{
151 div
.content div
.title:first-child
{
154 div
.content
+ div
.title
{
158 div
.sidebarblock
> div
.content
{
160 border: 1px solid silver
;
164 div
.listingblock
> div
.content
{
165 border: 1px solid silver
;
170 div
.quoteblock
, div
.verseblock
{
174 border-left: 5px solid
#dddddd;
178 div
.quoteblock
> div
.attribution
{
183 div
.verseblock
> div
.content
{
186 div
.verseblock
> div
.attribution
{
190 /* DEPRECATED: Pre version 8.2.7 verse style literal block. */
191 div
.verseblock
+ div
.attribution
{
195 div
.admonitionblock
.icon
{
199 text-decoration: underline
;
201 padding-right: 0.5em;
203 div
.admonitionblock td
.content
{
205 border-left: 3px solid
#dddddd;
208 div
.exampleblock
> div
.content
{
209 border-left: 3px solid
#dddddd;
213 div
.imageblock div
.content
{ padding-left: 0; }
214 span
.image img
{ border-style: none
; }
215 a
.image:visited
{ color: white
; }
219 margin-bottom: 0.8em;
232 list-style-position: outside
;
235 list-style-type: decimal
;
238 list-style-type: lower-alpha
;
241 list-style-type: upper-alpha
;
244 list-style-type: lower-roman
;
247 list-style-type: upper-roman
;
250 div
.compact ul
, div
.compact ol
,
251 div
.compact p
, div
.compact p
,
252 div
.compact div
, div
.compact div
{
254 margin-bottom: 0.1em;
257 div
.tableblock
> table
{
258 border: 3px solid
#527bbd;
260 thead
, p
.table
.header
{
261 font-family: sans-serif
;
273 /* Because the table frame attribute is overriden by CSS in most browsers. */
274 div
.tableblock
> table
[frame
="void"] {
277 div
.tableblock
> table
[frame
="hsides"] {
278 border-left-style: none
;
279 border-right-style: none
;
281 div
.tableblock
> table
[frame
="vsides"] {
282 border-top-style: none
;
283 border-bottom-style: none
;
289 margin-bottom: 0.8em;
292 padding-bottom: 15px;
294 dt
.hdlist1
.strong
, td
.hdlist1
.strong
{
300 padding-right: 0.8em;
306 div
.hdlist
.compact tr
{
315 .footnote, .footnoteref {
319 span
.footnote
, span
.footnoteref
{
320 vertical-align: super
;
324 margin: 20px 0 20px 0;
328 #footnotes div
.footnote
{
334 border-top: 1px solid silver
;
344 div#footer-badges
{ display: none
; }
348 margin-bottom: 2.5em;
353 font-family: sans-serif
;
357 margin-bottom: 0.1em;
360 div
.toclevel1
, div
.toclevel2
, div
.toclevel3
, div
.toclevel4
{
376 /* Overrides for manpage documents */
379 padding-bottom: 0.5em;
380 border-top: 2px solid silver
;
381 border-bottom: 2px solid silver
;
391 div#toc
{ display: none
; }
394 /* Workarounds for IE6's broken and incomplete CSS2. */
396 div
.sidebar-content
{
398 border: 1px solid silver
;
401 div
.sidebar-title
, div
.image-title
{
403 font-family: sans-serif
;
406 margin-bottom: 0.5em;
409 div
.listingblock div
.content
{
410 border: 1px solid silver
;
415 div
.quoteblock-attribution
{
420 div
.verseblock-content
{
423 div
.verseblock-attribution
{
428 div
.exampleblock-content
{
429 border-left: 3px solid
#dddddd;
433 /* IE6 sets dynamically generated links as visited. */
434 div#toc
a:visited
{ color: blue
; }
436 <script type=
"text/javascript">
438 window
.onload = function(){asciidoc
.footnotes();}
439 var asciidoc
= { // Namespace.
441 /////////////////////////////////////////////////////////////////////
442 // Table Of Contents generator
443 /////////////////////////////////////////////////////////////////////
445 /* Author: Mihai Bazon, September 2002
446 * http://students.infoiasi.ro/~mishoo
448 * Table Of Content generator
451 * Feel free to use this script under the terms of the GNU General Public
452 * License, as long as you do not remove or alter this notice.
455 /* modified by Troy D. Hanson, September 2006. License: GPL */
456 /* modified by Stuart Rackham, 2006, 2009. License: GPL */
459 toc: function (toclevels
) {
461 function getText(el
) {
463 for (var i
= el
.firstChild
; i
!= null; i
= i
.nextSibling
) {
464 if (i
.nodeType
== 3 /* Node.TEXT_NODE */) // IE doesn't speak constants.
466 else if (i
.firstChild
!= null)
472 function TocEntry(el
, text
, toclevel
) {
475 this.toclevel
= toclevel
;
478 function tocEntries(el
, toclevels
) {
479 var result
= new Array
;
480 var re
= new RegExp('[hH]([2-'+(toclevels
+1)+'])');
481 // Function that scans the DOM tree for header elements (the DOM2
482 // nodeIterator API would be a better technique but not supported by all
484 var iterate = function (el
) {
485 for (var i
= el
.firstChild
; i
!= null; i
= i
.nextSibling
) {
486 if (i
.nodeType
== 1 /* Node.ELEMENT_NODE */) {
487 var mo
= re
.exec(i
.tagName
);
488 if (mo
&& (i
.getAttribute("class") || i
.getAttribute("className")) != "float") {
489 result
[result
.length
] = new TocEntry(i
, getText(i
), mo
[1]-1);
499 var toc
= document
.getElementById("toc");
500 var entries
= tocEntries(document
.getElementById("content"), toclevels
);
501 for (var i
= 0; i
< entries
.length
; ++i
) {
502 var entry
= entries
[i
];
503 if (entry
.element
.id
== "")
504 entry
.element
.id
= "_toc_" + i
;
505 var a
= document
.createElement("a");
506 a
.href
= "#" + entry
.element
.id
;
507 a
.appendChild(document
.createTextNode(entry
.text
));
508 var div
= document
.createElement("div");
510 div
.className
= "toclevel" + entry
.toclevel
;
511 toc
.appendChild(div
);
513 if (entries
.length
== 0)
514 toc
.parentNode
.removeChild(toc
);
518 /////////////////////////////////////////////////////////////////////
519 // Footnotes generator
520 /////////////////////////////////////////////////////////////////////
522 /* Based on footnote generation code from:
523 * http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
526 footnotes: function () {
527 var cont
= document
.getElementById("content");
528 var noteholder
= document
.getElementById("footnotes");
529 var spans
= cont
.getElementsByTagName("span");
532 for (i
=0; i
<spans
.length
; i
++) {
533 if (spans
[i
].className
== "footnote") {
535 // Use [\s\S] in place of . so multi-line matches work.
536 // Because JavaScript has no s (dotall) regex flag.
537 note
= spans
[i
].innerHTML
.match(/\s*\[([\s\S]*)]\s*/)[1];
538 noteholder
.innerHTML
+=
539 "<div class='footnote' id='_footnote_" + n
+ "'>" +
540 "<a href='#_footnoteref_" + n
+ "' title='Return to text'>" +
541 n
+ "</a>. " + note
+ "</div>";
543 "[<a id='_footnoteref_" + n
+ "' href='#_footnote_" + n
+
544 "' title='View footnote' class='footnote'>" + n
+ "</a>]";
545 var id
=spans
[i
].getAttribute("id");
546 if (id
!= null) refs
["#"+id
] = n
;
550 noteholder
.parentNode
.removeChild(noteholder
);
552 // Process footnoterefs.
553 for (i
=0; i
<spans
.length
; i
++) {
554 if (spans
[i
].className
== "footnoteref") {
555 var href
= spans
[i
].getElementsByTagName("a")[0].getAttribute("href");
556 href
= href
.match(/#.*/)[0]; // Because IE return full URL.
559 "[<a href='#_footnote_" + n
+
560 "' title='View footnote' class='footnote'>" + n
+ "</a>]";
573 git-fsck(
1) Manual Page
576 <div class=
"sectionbody">
578 Verifies the connectivity and validity of the objects in the database
583 <h2 id=
"_synopsis">SYNOPSIS
</h2>
584 <div class=
"sectionbody">
585 <div class=
"verseblock">
586 <div class=
"verseblock-content"><em>git fsck
</em> [--tags] [--root] [--unreachable] [--cache] [--no-reflogs]
587 [--[no-]full] [--strict] [--verbose] [--lost-found] [
<object
>*]
</div>
588 <div class=
"verseblock-attribution">
591 <h2 id=
"_description">DESCRIPTION
</h2>
592 <div class=
"sectionbody">
593 <div class=
"paragraph"><p>Verifies the connectivity and validity of the objects in the database.
</p></div>
595 <h2 id=
"_options">OPTIONS
</h2>
596 <div class=
"sectionbody">
597 <div class=
"dlist"><dl>
603 An object to treat as the head of an unreachability trace.
605 <div class=
"paragraph"><p>If no objects are given,
<em>git fsck
</em> defaults to using the
606 index file, all SHA1 references in .git/refs/*, and all reflogs (unless
607 --no-reflogs is given) as heads.
</p></div>
614 Print out objects that exist but that aren
’t reachable from any
615 of the reference nodes.
639 Consider any object recorded in the index also as a head node for
640 an unreachability trace.
648 Do not consider commits that are referenced only by an
649 entry in a reflog to be reachable. This option is meant
650 only to search for commits that used to be in a ref, but
651 now aren
’t, but are still in that corresponding reflog.
659 Check not just objects in GIT_OBJECT_DIRECTORY
660 ($GIT_DIR/objects), but also the ones found in alternate
661 object pools listed in GIT_ALTERNATE_OBJECT_DIRECTORIES
662 or $GIT_DIR/objects/info/alternates,
663 and in packed git archives found in $GIT_DIR/objects/pack
664 and corresponding pack subdirectories in alternate
665 object pools. This is now default; you can turn it off
674 Enable more strict checking, namely to catch a file mode
675 recorded with g+w bit set, which was created by older
676 versions of git. Existing repositories, including the
677 Linux kernel, git itself, and sparse repository have old
678 objects that triggers this check, but it is recommended
679 to check new projects with this flag.
695 Write dangling objects into .git/lost-found/commit/ or
696 .git/lost-found/other/, depending on type. If the object is
697 a blob, the contents are written into the file, rather than
702 <div class=
"paragraph"><p>It tests SHA1 and general object sanity, and it does full tracking of
703 the resulting reachability and everything else. It prints out any
704 corruption it finds (missing or bad objects), and if you use the
705 <em>--unreachable
</em> flag it will also print out objects that exist but
706 that aren
’t reachable from any of the specified head nodes.
</p></div>
707 <div class=
"paragraph"><p>So for example
</p></div>
708 <div class=
"literalblock">
709 <div class=
"content">
710 <pre><tt>git fsck --unreachable HEAD \
711 $(git for-each-ref
--format=
"%(objectname)" refs/heads)
</tt></pre>
713 <div class=
"paragraph"><p>will do quite a
<em>lot
</em> of verification on the tree. There are a few
714 extra validity tests to be added (make sure that tree objects are
715 sorted properly etc), but on the whole if
<em>git fsck
</em> is happy, you
716 do have a valid tree.
</p></div>
717 <div class=
"paragraph"><p>Any corrupt objects you will have to find in backups or other archives
718 (i.e., you can just remove them and do an
<em>rsync
</em> with some other site in
719 the hopes that somebody else has the object you have corrupted).
</p></div>
720 <div class=
"paragraph"><p>Of course,
"valid tree" doesn
’t mean that it wasn
’t generated by some
721 evil person, and the end result might be crap. git is a revision
722 tracking system, not a quality assurance system ;)
</p></div>
724 <h2 id=
"_extracted_diagnostics">Extracted Diagnostics
</h2>
725 <div class=
"sectionbody">
726 <div class=
"dlist"><dl>
728 expect dangling commits - potential heads - due to lack of head information
732 You haven
’t specified any nodes as heads so it won
’t be
733 possible to differentiate between un-parented commits and
738 missing sha1 directory
<em><dir
></em>
742 The directory holding the sha1 objects is missing.
746 unreachable
<type
> <object
>
750 The
<type
> object
<object
>, isn
’t actually referred to directly
751 or indirectly in any of the trees or commits seen. This can
752 mean that there
’s another root node that you
’re not specifying
753 or that the tree is corrupt. If you haven
’t missed a root node
754 then you might as well delete unreachable nodes since they
759 missing
<type
> <object
>
763 The
<type
> object
<object
>, is referred to but isn
’t present in
768 dangling
<type
> <object
>
772 The
<type
> object
<object
>, is present in the database but never
773 <em>directly
</em> used. A dangling commit could be a root node.
777 sha1 mismatch
<object
>
781 The database has an object who
’s sha1 doesn
’t match the
783 This indicates a serious data integrity problem.
788 <h2 id=
"_environment_variables">Environment Variables
</h2>
789 <div class=
"sectionbody">
790 <div class=
"dlist"><dl>
796 used to specify the object database root (usually $GIT_DIR/objects)
804 used to specify the index file of the index
808 GIT_ALTERNATE_OBJECT_DIRECTORIES
812 used to specify additional object database roots (usually unset)
817 <h2 id=
"_git">GIT
</h2>
818 <div class=
"sectionbody">
819 <div class=
"paragraph"><p>Part of the
<a href=
"git.html">git(
1)
</a> suite
</p></div>
822 <div id=
"footnotes"><hr /></div>
824 <div id=
"footer-text">
825 Last updated
2011-
09-
21 23:
01:
14 PDT