argh....
I was sure I started jonas with postgres user...now it's done.
The repository's well created and owned by postgres.
I started SVN with postgres user who now own the repository base path but the error with svn is still the same.I can't see the directory 56a69… with my svn client (toirtoise)
but it's created by libresource under the repository base path
(for me /var/svn/projets/ls-svn/56a69...) and contains a svn structure...
Pierre