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NFS TCP mounts fail with"portmap query retrying: RPC: Timed out" using Flexgroups in ONTAP

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Category:
ontap-9
Specialty:
nfs
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Applies to

  • ONTAP 9.7P2 CLUSTER-MODE
  • Flexgroup

Issue

  • NFS v3 and v4 mounts that use TCP fails/hangs:

[root@rhel_admin tmp]# mount -v  ap01s05nas01.sce05.ap01.arm.com:/net05_homes/net05_homes /tmp/net05_homes/
mount.nfs: timeout set for Tue Jun  9 19:18:48 2020
mount.nfs: trying text-based options 'vers=4.1,addr=10.xx.yy.10,clientaddr=10.xx.yy.39'
^C

 

[root@rhel_admin /]# mount -v -o vers=3,sec=sys netapp123.netapp.com:/net05_home/net05_home /tmp/net05_home/
mount.nfs: timeout set for Tue Jun 9 17:48:46 2020
mount.nfs: trying text-based options 'vers=3,sec=sys,addr=10.xx.yy.10'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100003, trying vers=3, prot=17
mount.nfs: trying 10.xx.yy.10 prog 100003 vers 3 prot UDP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 10.xx.yy.10 prog 100005 vers 3 prot UDP port 635

 
[root@rhel_admin /]# ping netapp123.netapp.com
PING netapp123.netapp.com (10.xx.yy.10) 56(84) bytes of data.
64 bytes from netapp123.netapp.com (10.xx.yy.10): icmp_seq=1 ttl=62 time=0.116 ms
64 bytes from netapp123.netapp.com (10.xx.yy.10): icmp_seq=2 ttl=62 time=0.160 ms
64 bytes from netapp123.netapp.com (10.xx.yy.10): icmp_seq=3 ttl=62 time=0.151 ms
64 bytes from netapp123.netapp.com (10.xx.yy.10): icmp_seq=4 ttl=62 time=0.147 ms
^C
--- netapp123.netapp.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3000ms
rtt min/avg/max/mdev = 0.116/0.143/0.160/0.020 ms
 
  • "rpcinfo -p" fails with error that portmapper is timing out :
 
[root@rhel_admin /]# rpcinfo -p 10.xx.yy.10
rpcinfo: can't contact portmapper: RPC: Timed out
 
  • NFS v3 mounts that use UDP are not affected
  • When LIF is migrated to other nodes the TCP mounts work fine. 

 

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