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    • NFSv3 mount from clients hang and timeout due to portmapper blocked on firewall
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/NFSv3_mount_from_clients_hang_and_timeout_due_to_portmapper_blocked_on_firewall
      Applies to ONTAP 9 NFS v3 Issue Fresh attempts to mount NFS export hang and throw below (or similar) error [root@RHEL7 ~] mount.nfs: Connection timed out Existing mounts continue to work until or unle...Applies to ONTAP 9 NFS v3 Issue Fresh attempts to mount NFS export hang and throw below (or similar) error [root@RHEL7 ~] mount.nfs: Connection timed out Existing mounts continue to work until or unless they are unmounted
    • Data access is affected due to duplicate IP address
      https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/Data_access_is_affected_due_to_duplicate_IP_address
      NFS client fails to mount a volume. iSCSI host experiences disconnect to storage. CIFS and NFS requests are not actually reaching to ONTAP but going to the other device having same IP address. Managem...NFS client fails to mount a volume. iSCSI host experiences disconnect to storage. CIFS and NFS requests are not actually reaching to ONTAP but going to the other device having same IP address. Management access to the cluster may be affected. Duplicate IP address error messages can usually be seen in the event logs. Fri Oct 16 13:31:11 CEST [Node-01: NwkThd_00: netinet.ethr.duplct.ipAdrr:error]: Duplicate IP address 10.10.10.50!! sent from Ethernet address: 02:a0:98:xx:xx:xx.
    • Mount fails with error "Operation Not Supported" in Data ONTAP 8 7-Mode using Ubuntu
      https://kb.netapp.com/Legacy/ONTAP/7Mode/Mount_fails_with_error_Operation_Not_Supported_in_Data_ONTAP_8_7_Mode_using_Ubuntu
      Applies to Data ONTAP 8 7-Mode Ubuntu SMB2 Issue When the user tries to mount they encounters this error. mount -vv -t cifs -o vers=2.0,username=admin,sec=ntlmv2,domain=NetApp.COM,dir_mode=0777,file_m...Applies to Data ONTAP 8 7-Mode Ubuntu SMB2 Issue When the user tries to mount they encounters this error. mount -vv -t cifs -o vers=2.0,username=admin,sec=ntlmv2,domain=NetApp.COM,dir_mode=0777,file_mode=0777 //netapp59/admin /mnt/admin Password for admin@//netapp59/admin: *********** mount error(95): Operation not supported Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)