Seafile server: problem seahub

root@OwnCloud:/media/soporte/backup/sfile/seafile-server-6.0.4# ./seahub.sh start-fastcgi

LC_ALL is not set in ENV, set to en_US.UTF-8
Starting seahub (fastcgi) at 127.0.0.1:8000 …
Traceback (most recent call last):
File “/media/soporte/backup/sfile/seafile-server-6.0.4/seahub/manage.py”, line 10, in
execute_from_command_line(sys.argv)
File “/media/soporte/backup/sfile/seafile-server-6.0.4/seahub/thirdpart/Django-1.8.10-py2.7.egg/django/core/management/init.py”, line 354, in execute_from_command_line
utility.execute()
File “/media/soporte/backup/sfile/seafile-server-6.0.4/seahub/thirdpart/Django-1.8.10-py2.7.egg/django/core/management/init.py”, line 328, in execute
django.setup()
File “/media/soporte/backup/sfile/seafile-server-6.0.4/seahub/thirdpart/Django-1.8.10-py2.7.egg/django/init.py”, line 17, in setup
configure_logging(settings.LOGGING_CONFIG, settings.LOGGING)
File “/media/soporte/backup/sfile/seafile-server-6.0.4/seahub/thirdpart/Django-1.8.10-py2.7.egg/django/utils/log.py”, line 86, in configure_logging
logging_config_func(logging_settings)
File “/usr/lib/python2.7/logging/config.py”, line 794, in dictConfig
dictConfigClass(config).configure()
File “/usr/lib/python2.7/logging/config.py”, line 576, in configure
‘%r: %s’ % (name, e))
ValueError: Unable to configure handler ‘default’: [Errno 30] Read-only file system: ‘/media/soporte/backup/sfile/logs/seahub.log’
Error:Seahub failed to start.

And there is the reason:

it does not let me make changes.

But the problem seems to lie within your Linux distribution, not within Seahub.
So you need to look for help there.