[SSSD-users] applies override_homedir dynamically

Hi friends: I'm managing a workstation where user home directories are mounted from a NFS server. Sometimes the NFS server goes down and user gets stuck when she tries to login with ssh. We have a daemon that periodically checks the health of NFS server. If it goes down, we'd like to apply the "override_homedir" option to override home directory string from LDAP into some local directory like /tmp so that user can still login, despite lack of home directory. It seems that whenever I add/remove the "override_homedir" to/from sssd.conf, I must restart the sssd daemon. I wonder if I can ask sssd daemon to dynamically reload without a restart? Or do you have better solution for this scenario? Thank you!!