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+[[!meta copyright="Copyright © 2011 Free Software Foundation, Inc."]]
+
+[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
+is included in the section entitled [[GNU Free Documentation
+License|/fdl]]."]]"""]]
+
+[[!tag open_issue_porting]]
+
+ $ git-new-workdir ~/tmp/binutils/git /media/hd1s1/tmp/master master
+ error: unable to create file gas/testsuite/gas/arm/attr-mfpu-vfpv3-d16.d (Interrupted system call)
+ Checking out files: 100% (12315/12315), done.
+ Already on 'master'
+ $ cd /media/hd1s1/tmp/master
+ $ git status
+ # On branch master
+ # Changes not staged for commit:
+ # (use "git add <file>..." to update what will be committed)
+ # (use "git checkout -- <file>..." to discard changes in working directory)
+ #
+ # modified: gas/testsuite/gas/arm/attr-mfpu-vfpv3-d16.d
+ #
+ no changes added to commit (use "git add" and/or "git commit -a")
+ $ git checkout -f
+ $ git status
+ # On branch master
+ nothing to commit (working directory clean)
+
+([[Git issue|git-core-2]] is known.)
+
+ $ git-new-workdir ~/tmp/binutils/git /media/hd1s2/tmp/master master
+ error: unable to create file bfd/elf32-dlx.c (Interrupted system call)
+ error: unable to create file bfd/sunos.c (Interrupted system call)
+ error: unable to create file gas/testsuite/gas/arm/attr-mfpu-vfpv3-d16.d (Interrupted system call)
+ error: unable to create file gas/testsuite/gas/mmix/regx-op.d (Interrupted system call)
+ error: unable to create file gas/testsuite/gas/tic6x/reloc-bad-4.s (Interrupted system call)
+ error: unable to create file gold/testsuite/script_test_2.t (Interrupted system call)
+ error: unable to create file ld/testsuite/ld-mmix/loc7m.d (Interrupted system call)
+ error: unable to create file ld/testsuite/ld-powerpc/tlsexe.g (Interrupted system call)
+ Checking out files: 100% (12315/12315), done.
+ Already on 'master'
+ $ cd /media/hd1s2/tmp/master
+ $ git status
+ # On branch master
+ # Changes not staged for commit:
+ # (use "git add <file>..." to update what will be committed)
+ # (use "git checkout -- <file>..." to discard changes in working directory)
+ #
+ # modified: bfd/elf32-dlx.c
+ # modified: bfd/sunos.c
+ # modified: gas/testsuite/gas/arm/attr-mfpu-vfpv3-d16.d
+ # modified: gas/testsuite/gas/mmix/regx-op.d
+ # modified: gas/testsuite/gas/tic6x/reloc-bad-4.s
+ # modified: gold/testsuite/script_test_2.t
+ # modified: ld/testsuite/ld-mmix/loc7m.d
+ # modified: ld/testsuite/ld-powerpc/tlsexe.g
+ #
+ no changes added to commit (use "git add" and/or "git commit -a")
+ $ git checkout -f
+ $ git status
+ # On branch master
+ nothing to commit (working directory clean)
+
+Now you'd expect these directories to have identical content, but:
+
+ $ diff -x .git -ru /media/hd1s{1,2}/tmp/master/ > /tmp/diff
+ $ ls -l /tmp/diff
+ -rw-r--r-- 1 thomas thomas 613677 10. Jun 19:12 /tmp/diff
+ $ grep '^[^ @+-]' < /tmp/diff
+ diff -x .git -ru /media/hd1s1/tmp/master//ld/configure /media/hd1s2/tmp/master//ld/configure
+
+(Note that this isn't a file that Git had issues with.)
+
+Try again:
+
+ $ diff -x .git -ru /media/hd1s{1,2}/tmp/master/ > /tmp/diff_
+ $ ls -l /tmp/diff*
+ -rw-r--r-- 1 thomas thomas 613677 10. Jun 19:12 /tmp/diff
+ -rw-r--r-- 1 thomas thomas 613677 10. Jun 19:17 /tmp/diff_
+ $ cmp /tmp/diff{,_}; echo $?
+ 0
+
+At least it's consistent. Force a reload:
+
+ # settrans -ag /media/hd1s1
+ # settrans -ag /media/hd1s2
+
+Try again:
+
+ $ diff -x .git -ru /media/hd1s{1,2}/tmp/master/ > /tmp/diff__
+ $ ls -l /tmp/diff*
+ -rw-r--r-- 1 thomas thomas 613677 10. Jun 19:12 /tmp/diff
+ -rw-r--r-- 1 thomas thomas 613677 10. Jun 19:17 /tmp/diff_
+ -rw-r--r-- 1 thomas thomas 613677 10. Jun 19:30 /tmp/diff__
+ $ cmp /tmp/diff{,__}; echo $?
+ 0
+
+Consistent; thus very likely corrupt on-disk.
+
+After a few tries, the pattern generally is that for the files where there are
+differences, once the file regularely ends, its content appears once more.
+That is, the files' content appears once (regularely), and then the same again.
+
+Some more copying:
+
+ $ (cd /media/hd1s1/tmp/ && cp -a master master_)
+ $ (cd /media/hd1s2/tmp/ && cp -a master master_)
+ $ diff -x .git -ru /media/hd1s1/tmp/master{,_}/ > /tmp/diff1
+ $ diff -x .git -ru /media/hd1s2/tmp/master{,_}/ > /tmp/diff2
+ $ ls -l /tmp/diff{1,2}
+ -rw-r--r-- 1 thomas thomas 0 10. Jun 19:46 /tmp/diff1
+ -rw-r--r-- 1 thomas thomas 0 10. Jun 19:46 /tmp/diff2
+
+No further difference.
+
+---
+
+ $ git-new-workdir git master master
+ $ diff -x .git -ur tar_master/ master/ > master.diff
+
+ $ rm -rf ar_master* && (cd git/ && git archive master) | (mkdir ar_master && cd ar_master/ && tar -x) && diff -x .git -ru tar_master/ ar_master/ > ar_master.diff; ls -l ar_master.diff
+ $ (cd git/ && git archive master) | md5sum