chown: handle broken symlinks

[davidfischer-ch]

ebu21516:2013-12-18 15:26:34 INFO juju juju-log.go:66 oscied-orchestra/0: [HOOK] Exiting OrchestraHooks hook config-changed
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK Traceback (most recent call last):
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK File "/usr/lib/python2.7/runpy.py", line 162, in run_module_as_main
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK "main", fname, loader, pkg_name)
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK File "/usr/lib/python2.7/runpy.py", line 72, in run_code
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK exec code in run_globals
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK File "/var/lib/juju/agents/unit-oscied-orchestra-0/charm/library/oscied_lib/OrchestraHooks.py", line 306, in
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK DEFAULT_OS_ENV).trigger()
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK File "/usr/local/lib/python2.7/dist-packages/pytoolbox-6.0.4_beta-py2.7.egg/pytoolbox/juju.py", line 540, in trigger
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK getattr(self, u'hook{0}'.format(hook_name.replace(u'-', u'')))()
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK File "/var/lib/juju/agents/unit-oscied-orchestra-0/charm/library/oscied_lib/OrchestraHooks.py", line 210, in hook_config_changed
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK chown(local_cfg.sites_directory, DAEMON_USER, DAEMON_GROUP, recursive=True)
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK File "/usr/local/lib/python2.7/dist-packages/pytoolbox-6.0.4_beta-py2.7.egg/pytoolbox/filesystem.py", line 263, in chown
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK os.chown(os.path.join(root, filename), uid, gid)
ebu21516:2013-12-18 15:26:34 INFO juju.worker.uniter context.go:255 HOOK OSError: [Errno 2] No such file or directory: '/var/www/webui/medias'