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Re: checksum error upgrading working copy

From: Hyrum K Wright <hyrum.wright_at_wandisco.com>
Date: Thu, 13 Oct 2011 10:31:04 -0500

On Thu, Oct 13, 2011 at 10:29 AM, Philip Martin
<philip.martin_at_wandisco.com> wrote:
> Stefan Sperling <stsp_at_elego.de> writes:
>
>> On Thu, Oct 13, 2011 at 04:28:21PM +0200, Daniel Sparing wrote:
>>> Dear fellow subversion users,
>>>
>>> as requested by the error message, i would like to report an error as
>>> the following:
>>>
>>> ---8<---
>>> In file
>>>  'D:\Development\SVN\Releases\TortoiseSVN-1.7.0\ext\subversion\subversion\libsvn_wc\entries.c'
>>>  line 1935: assertion failed (svn_checksum_match(entry_md5_checksum,
>>>  found_md5_checksum))
>>> ---8<---
>>>
>>> what i was doing: I updated my TortoiseSVN client to 1.7.0, then tried
>>> to upgrade my two working copies to the new 1.7 format, one of them
>>> succeeded, the other one repeatedly returns the error message above.
>>>
>>> daniel
>>
>> You had a broken 1.6 working copy which cannot be upgraded.
>> See http://svn.haxx.se/tsvnusers/archive-2011-10/0086.shtml
>>
>> We've been getting this report a lot lately.
>> Maybe it's time to add this to the FAQ?
>>
>> I also think we should change the assert into a proper error message.
>
> In this particular case one of the checksum values in one of the
> .svn/entries files doesn't match the checksum of the corresponding file
> in .svn/text-base.  The incorrect checksum won't show up as an error in
> 1.6 until an update or commit attempts to modify the corresponding file.
> The 1.7 upgrade process checks all checksums so it will detect errors
> that lie dormant in 1.6 working copies.
>
> I agree we should be returning a better error, one that includes the
> name of the file with the incorrect checksum.

Another option might be to run a pre-upgrade check to ensure this type
of error doesn't exist, before we irrevocably upgrade (and potentially
hose) the working copy.

-Hyrum

-- 
uberSVN: Apache Subversion Made Easy
http://www.uberSVN.com/
Received on 2011-10-13 17:31:37 CEST

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