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Re: "Checksum mismatch" when performing update

From: Matt Doran <matt.doran_at_papercut.biz>
Date: 2005-05-11 14:11:40 CEST

OK ... I've looked further and found something strange ....

    $ svn info providers.sln
    Path: providers.sln
    Name: providers.sln
    URL:
    https://localhost/repos/projects/pc-ng/trunk/providers/providers.sln
    Repository UUID: 505ffd8f-26e6-0310-8e5c-c33a79a468e7
    Revision: 251

    [snip]

    Checksum: 8f21805e9b084c2ce6cbbb52f325272e

So the file is revision 251

    $ diff providers.sln .svn/text-base/providers.sln.svn-base
    $ md5sum providers.sln
    8f21805e9b084c2ce6cbbb52f325272e providers.sln
    $ md5sum .svn/text-base/providers.sln.svn-base
    8f21805e9b084c2ce6cbbb52f325272e .svn/text-base/providers.sln.svn-base

So the wc file and the pristine copy are identical.

    $ svn cat -r251 providers.sln | md5sum
    7dfee8873e30d2f574a79b7e77fb9418 -
    $ diff providers.sln .svn/text-base/providers.sln.svn-base
    $ md5sum providers.sln
    8f21805e9b084c2ce6cbbb52f325272e providers.sln
    $ md5sum .svn/text-base/providers.sln.svn-base
    8f21805e9b084c2ce6cbbb52f325272e .svn/text-base/providers.sln.svn-base
    $ diff providers.sln /tmp/test.251
    2d1
    < !!!!
    $

But the wc & pristine copy differ to what's in the repository. (a line
containing 4 '!' characters).

Now that's weird! I could imagine I might have accidentally added the
"!!!!", but there is no way I updated the text-base and checksums to
match. ????

Almost seems too strange to be believable?! Is there anything stupid I
could have done to cause this?

Matt

Ben Collins-Sussman wrote:

>
> On May 11, 2005, at 3:37 AM, Matt Doran wrote:
>
>> $ svn --version -q
>> 1.1.4
>> $ svn up
>> svn: Checksum mismatch for 'providers.sln'; expected:
>> '9cb298b2150e77340280d646c50d244a', actual:
>> '6590988692d8eb0e8ed5514b5821cd79'
>> $ md5sum providers.sln
>> 8f21805e9b084c2ce6cbbb52f325272e providers.sln
>> $ md5sum .svn/text-base/providers.sln.svn-base
>> 8f21805e9b084c2ce6cbbb52f325272e .svn/text-base/providers.sln.svn- base
>
>
> The checksum error isn't necessarily about the text-base. Checksums
> are sent in both directions over the network, whenever binary diffs
> are sent in 'update' or 'commit'.
>
> So it's possible that an incoming binary diff got munged over the
> network...
>
>
Received on Wed May 11 14:28:28 2005

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