Re: I need advice about how to investigate cvs2svn.py problems

[kf...@collab.net]

"Carter Sanders" <ca...@instant802.com> writes:
> I am trying to convert a rather large CVS repository (about 3 gig, lots
> of branches) to an SVN repository. The first few attempts, cvs2svn
> choked on some tags with typos in them that included '/' characters. I
> removed those tags from the repository, and now on my conversion
> attempts, it runs for a few hours and then hangs. At least I think it
> hangs - it stops writing to standard out mid line: 
> "adding or changing ...."
> "add"
>  
> and just does nothing. The database is not growing, the process size is
> fixed. I tried doing this with dump only, and similar behavior is
> observed (no output, dump file size stopped growing).
>  
> Does anybody have any advice of what I should do to try to narrow this
> down? I attached to the process with strace, and an endless loop-looking
> behavior was observed. It seems to not always hang in the same place.

I would so *love* to reproduce this.  Shipping 3 gigs to us is
probably overkill, though.  Can you reproduce this on some subdir of
your repository?  (And, what does your free disk space look like when
cvs2svn hangs?  Are you running out of space on that partition?)

Let's see if we can narrow this down to either something about the
data, or at least to the minimal data size needed to stimulate the bug
(if it is caused by size).

Thanks for reporting,
-Karl



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Re: I need advice about how to investigate cvs2svn.py problems

[Mike Laster <mi...@marketocracy.com>]

On Feb 19, 2004, at 7:58 PM, kfogel@collab.net wrote:

> "Carter Sanders" <ca...@instant802.com> writes:
>> I am trying to convert a rather large CVS repository (about 3 gig, 
>> lots
>> of branches) to an SVN repository. The first few attempts, cvs2svn
>> choked on some tags with typos in them that included '/' characters. I
>> removed those tags from the repository, and now on my conversion
>> attempts, it runs for a few hours and then hangs. At least I think it
>> hangs - it stops writing to standard out mid line:
>> "adding or changing ...."
>> "add"
>>
>> and just does nothing. The database is not growing, the process size 
>> is
>> fixed. I tried doing this with dump only, and similar behavior is
>> observed (no output, dump file size stopped growing).
>>
>> Does anybody have any advice of what I should do to try to narrow this
>> down? I attached to the process with strace, and an endless 
>> loop-looking
>> behavior was observed. It seems to not always hang in the same place.
>
> I would so *love* to reproduce this.  Shipping 3 gigs to us is
> probably overkill, though.  Can you reproduce this on some subdir of
> your repository?  (And, what does your free disk space look like when
> cvs2svn hangs?  Are you running out of space on that partition?)
>
> Let's see if we can narrow this down to either something about the
> data, or at least to the minimal data size needed to stimulate the bug
> (if it is caused by size).

I ran into a problem similar to this when converting our repository.  
It turns
out it was a corrupted RCS ,v file that was causing it to hang.  CVS and
RCS themselves didn't have a problem with it, but cvs2svn.py choked.
The corruption was that there were several null characters appended to 
the
end of the file.  When I deleted them, the problem went away.


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