NetApp NFS server running Ontap 9.2 incorrectly responds to LOCKU with NFS4ERR_BAD_SEQID (10026) and 'bad sequence-id' errors seen in messages file on Linux NFS client
Issue
- We upgraded our NetApp filer to Ontap 9.2 and are now seeing a lot of
bad sequence-id error on an unconfirmed sequencemessages. A tcpdump shows LOCKU can get a response of NFS4ERR_BAD_SEQID (10026) and after that, RELEASE_LOCKOWNER gets a response of NFS4ERR_LOCKS_HELD (10037).
Environment
- NetApp NFS server
- seen on Ontap 9.2
- Red Hat NFS client
- seen on RHEL6.9 (kernel-2.6.32-696.10.3.el6)
- NFS4
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