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Re: commit failed due to "backwards-sliding source views" - what do I do?

From: Daniel Shahaf <d.s_at_daniel.shahaf.name>
Date: Wed, 29 Apr 2020 10:11:27 +0000

Johan Corveleyn wrote on Wed, 29 Apr 2020 11:04 +0200:
> On Wed, Apr 29, 2020 at 7:14 AM Chaya <chaya.s1010_at_gmail.com> wrote:
> >
> > 1. Unfortunately, it's not a public repository.
> > 2. The SVN project repo is actually file based. So I had to convert it to
> > svn protocol before cloning to git.
> > 3. Using latest version of svn (version 1.13.0 (r1867053)) and git ( version
> > 1.13.0 (r1867053))
> >
> > --
> > Sent from: http://subversion.1072662.n5.nabble.com/Subversion-Users-f84423.html
> You're using "git svn", which is part of git (sorry, I thought git-svn
> was a separate project, but it seems to be simply part of git itself
> now, as a subcommand):
> https://git-scm.com/docs/git-svn
> From what I understand 2.26.2 is the latest release of git currently
> (see https://git-scm.com/).
> IMHO you'll need to ask the git community for support on the "git svn"
> command. I have no idea what kind of svn-like operations the "git svn"
> tool really performs under the hood. Maybe there are certain
> pre-conditions you need to make sure of, before running "git svn" on a
> repository (those should be documented at
> https://git-scm.com/docs/git-svn, or if not you should ask the git
> community).
> Maybe one more suggestion: you say in (2) that you "had to convert it
> to svn protocol before cloning to git". What do you mean with "convert
> it to svn protocol"? Did you first use it as a file-based repository
> (in SVN with a file:// URL), and before using "git svn" you had to set
> up and "svnserve" process to serve it? Perhaps the (file-based)
> repository you started from is in a very old format which isn't
> supported well by "git svn". In that case, perhaps you should first
> try to "svnadmin upgrade $REPO" with your svn tools, before trying to
> run "git svn" on it. It's worth a try...

Johan, what do you mean by 'a very old format which isn't supported well
by "git svn"'? How would you tell, over the svn:// protocol, whether
a repository is of a 'very old format'? I'd expect the server to hide
these details from the client — assuming the version of svnserve is new
enough, at least. [Well, one thing the server won't hide is the
"mergeinfo" capability, which depends on the backend format number, but
that's probably not related to the case at hand.]

In any case, Chaya, could you run `svnserve --version -q` and `svnadmin
info /path/to/repos` and post the output here? In addition to Johan's
direction, there's a svn_txdelta_parse_svndiff() call in BDB that I'd
like to rule out. In fact, I wish I had a backtrace of the error (it's
generated by us: see subversion/libsvn_delta/svndiff.c:write_handler),
but I don't even know whether to ask you to debug svnserve(8) on the
server or svn(1) or git-svn(1) on the client… as Johan said, we really
need the git-svn folks to look into this first and come back to us with
a reproduction recipe in terms of our APIs.

Also, could you try creating an svnsync mirror of the repository, and
let us know whether that succeeded or errored?


Received on 2020-04-29 12:11:37 CEST

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