After migrating SVM LIFs from one node to another, NFS clients are unable to mount
Applies to
- ONTAP 9
- NFS
- DNS
- Export policies
Issue
- Following a maintenance event where all SVM resources were relocated from one node to another, clients can no longer mount via NFS
- EMS reports the following:
Tue Oct 07 10:40:55 -0400 [node1: mgwd: dns.server.timed.out:error]: DNS server 10.20.30.40 did not respond to vserver = SVM1 within timeout interval.
- MGWD reports the following:
Tue Oct 07 2025 10:41:53 -04:00 [kern_mgwd:info:7020] | [273.642.955] ERR : getaddrinfo(hostname123) returned error=8: Name does not resolve files_error = NS_ERROR_NOT_FOUND, nis_error = NS_ERROR_NONE, ldap_error = NS_ERROR_NONE, dns_error = NS_ERROR_CONN_ERR { in hostMatchLookup() at src/mgmtgwd/nfs/mgwd_exports.cc:2150 }
Tue Oct 07 2025 10:41:53 -04:00 [kern_mgwd:info:7020] | [274.682.599] ERR : DNS lookup failed, error = 5 { in processDnsGranularErrors() at src/mgmtgwd/nfs/mgwd_exports.cc:177 }
- Export policies contain many hostname-based clientmatch values
- Multiple default routes configured for the SVM
- One of the multiple default routes traverses a gateway that cannot route to the DNS server(s)