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NFS: v4 server .. turned a bad sequence-id error!

Redhat 6.9 on our client Linux box, ONTAP 9.1 P5 Storage layer

  

serverx1 kernel: [1550294.152606] NFS: v4 server netappprd.cof.ds.myorg.com  returned a bad sequence-id error!

serverx1 kernel: [1550284.154875] NFS: v4 server netappprd.cof.ds.myorg.com  returned a bad sequence-id error!

serverx1 kernel: [1550284.159944] NFS: v4 server netappprd.cof.ds.myorg.com  returned a bad sequence-id error!

 

On Apr 26, we had over 9,000 of these appear in /var/log/messages, and NFS mounted Netapp storage showed that over 1,024,000 files were 'open', so Storage layer hung and we were forced to reboot our linux server.

 

Any ideas?

 

Thank you


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