'Gets the EVS ID for the named filesystem.
:param fs_label: The filesystem label related to the EVS required
:returns: EVS ID of the filesystem'

def get_evs(self, fs_label):

    if (not self.fslist):
        self._get_fs_list()
    for key in self.fslist:
        if (fs_label == self.fslist[key]['label']):
            LOG.debug('EVS    ID    for    fs    %(fs)s:    %(id)s.', {'fs': fs_label, 'id': self.fslist[key]['evsid']})
            return self.fslist[key]['evsid']
    LOG.debug("Can't    find    EVS    ID    for    fs    %(fs)s.", {'fs': fs_label})
