bzr-svn fails to branch

[Morten Siebuhr]

When trying to branch from an upstream SVN repos (https://svn.mccode.org/svn/McCode/trunk - uses CaCert.org for SSL) into Bazaar, I get the following error:

Source >bzr branch https://svn.mccode.org/svn/McCode/trunk bzr-mccode-trunk

bzr: ERROR: subvertpy.SubversionException: ("REPORT of '/svn/McCode/!svn/bc/2445': 200 OK (https://svn.mccode.org)", 175002)

Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 716, in exception_to_return_code
    return the_callable(*args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 911, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 547, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.6/dist-packages/bzrlib/builtins.py", line 1070, in run
    from_location)
  File "/usr/lib/python2.6/dist-packages/bzrlib/bzrdir.py", line 913, in open_tree_or_branch
    return bzrdir._get_tree_branch()
  File "/usr/lib/python2.6/dist-packages/bzrlib/bzrdir.py", line 898, in _get_tree_branch
    branch = self.open_branch()
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/remote.py", line 187, in open_branch
    branch = SvnBranch(repos, self.branch_path)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/branch.py", line 127, in __init__
    self.layout = self.repository.get_layout()
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/repository.py", line 603, in get_layout
    return self.get_layout_source()[0]
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/repository.py", line 625, in get_layout_source
    self._find_guessed_layout()
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/repository.py", line 643, in _find_guessed_layout
    revnum, self._hinted_branch_path)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/layout/guess.py", line 143, in repository_guess_layout
    repository._log.iter_changes(None, revnum, max(0, revnum-GUESS_SAMPLE_SIZE)), revnum, branch_path)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/logwalker.py", line 246, in iter_changes
    self._fetch_revisions(max(from_revnum, to_revnum), pb=pb)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/logwalker.py", line 328, in _fetch_revisions
    self.actual._transport.get_log(rcvr, [""], self.saved_revnum, to_revnum, 0, True, True, False, todo_revprops)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/transport.py", line 390, in get_log
    revprops)
SubversionException: ("REPORT of '/svn/McCode/!svn/bc/2445': 200 OK (https://svn.mccode.org)", 175002)

bzr 1.13.1 on python 2.6.2 (linux2)
arguments: ['/usr/bin/bzr', 'branch', 'https://svn.mccode.org/svn/McCode/trunk', 'bzr-mccode-trunk']
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_DK.UTF-8'
plugins:
  bookmarks /home/msiebuhr/.bazaar/plugins/bookmarks [unknown]
  bzrtools /usr/lib/python2.6/dist-packages/bzrlib/plugins/bzrtools [1.13]
  cvsps_import /home/msiebuhr/.bazaar/plugins/cvsps_import [unknown]
  etckeeper /usr/lib/python2.6/dist-packages/bzrlib/plugins/etckeeper [unknown]
  launchpad /usr/lib/python2.6/dist-packages/bzrlib/plugins/launchpad [unknown]
  netrc_credential_store /usr/lib/python2.6/dist-packages/bzrlib/plugins/netrc_credential_store [unknown]
  rebase /usr/lib/python2.6/dist-packages/bzrlib/plugins/rebase [0.4.4]
  search /usr/lib/python2.6/dist-packages/bzrlib/plugins/search [1.7dev]
  stats /usr/lib/python2.6/dist-packages/bzrlib/plugins/stats [unknown]
  svn /usr/lib/python2.6/dist-packages/bzrlib/plugins/svn [0.5.3]
*** Bazaar has encountered an internal error.
    Please report a bug at https://bugs.launchpad.net/bzr/+filebug
    including this traceback, and a description of what you
    were doing when the error occurred.
Source >

[Andrew Bennetts (spiv)]

Looks like a bzr-svn bug, so closing the bzr part.

[Jelmer Vernooij (jelmer)]

This is caused by a bug in the Subversion libraries that bzr-svn uses.

e.g. try:

$ svn log -v https://svn.mccode.org/svn/McCode/trunk
...
svn: REPORT of '/svn/McCode/!svn/bc/2470/trunk': 200 OK (https://svn.mccode.org)

[Morten Siebuhr (msiebuhr)]

Ideed - but the fact that SVN then fails with the message '200 OK' is a bit confusing to me... And neither 'svn' nor 'svn log' seems to have any debug options, so it is quite difficult to pry out more information about what is wrong.

If it is possible to do so without having to re-compile svn, please let me know, and I will dig into it at some time.

[Jelmer Vernooij (jelmer)]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Morten Siebuhr wrote:
> Ideed - but the fact that SVN then fails with the message '200 OK' is a
> bit confusing to me... And neither 'svn' nor 'svn log' seems to have any
> debug options, so it is quite difficult to pry out more information
> about what is wrong.
>
> If it is possible to do so without having to re-compile svn, please let
> me know, and I will dig into it at some time.
This is a bug in the Subversion libraries that will require changes to
the Subversion source code to be fixed. You can help to get this bug
fixed by trying to report it upstream in Subversion. If you can
include a network trace that may be helpful to determine what is going
on exactly.

Cheers,

Jelmer
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[Jelmer Vernooij (jelmer)]

I've linked the related subversion bug report.

[Morten Siebuhr (msiebuhr)]

I did a dump of the SVN repository and found some invalid UTF-8 in one of the comment to one of the revisions (r1209). Alas, it looks like SVN somehow can't handle incorrect UTF-8.

[Morten Siebuhr (msiebuhr)]

Oh. BTW, it can be fixed in the repository by following these instructions:

    http://subversion.tigris.org/faq.html#change-log-msg

(Can be done from the client-side by anyone with write-access.)