NFS with vfiler and vfiler-dr

[JGPSHNTAP]

Just a question to the community,

If we are mounting hard mounts with intr and we have a vfiler and then activate a vfiler DR- do all the clients have to unmount and remount nfs?  ANd if so, why?  The ip is different from Prod and DR?  But, the NFS clients are mounting FQDN

[aborzenkov]

Communication is between two IPs; once FQDN was resolved to IP it becomes irrelevant. If IP changed, host must again resolve FQDN to new IP and reestablish connection. Old connection will appear hung.