Re: git 1.5.3.5 error over NFS (pack data corruption)

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On Tuesday, November 13, 2007 at 22:48:02 (+0100) Alex Riesen writes:
>...
>> >I extend the part you quoted. The file is opened here:
>> >...
>> >This is strange. The current git should not produce anything like
>> >this (and does not, here). ...
>> 
>> You are absolutely correct.  My comrade ran this with 1.5.0.1 by
>> mistake.  He reran the strace with 1.5.3.5, and I have replaced
>> the tarball on my server:
>> 
>>     http://www.zopyra.com/~rael/git/git-trace.tar.bz2
>
>Still looks like v1.5.0.1:
>
>    write(2, "fatal: ", 7)                  = 7
>    write(2, "cannot pread pack file: No such "..., 49) = 49

Well, I just grepped for the above string in git-1.5.3.5:

% grep 'cannot pread pack file' *.c
index-pack.c:                   die("cannot pread pack file: %s", strerror(errno));

>I think it got worse:
>
>> write(3, "\360]|\204\205\317|\352\336C\342\316\206\334\326\201\211"..., 4096) = 4096
>> write(3, "\20\t\33if (cached_vias.insert(die,\227\17"..., 4096) = 4096
>
>The data in packs is zlib-compressed. I don't think you should be able
>to see any readable strings in them (except for "PACK" in the header).
>I believe you have a data corruption now.
>
>Does git-fsck --all say anything about that, BTW?

I'll see if we can run it...

>Besides, could you try with a git compiled with NO_PREAD?

I'll try this also.


Bill
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