From:   "Benjamin Coddington" <bcodding@redhat.com>
To:     "Jason Tibbitts" <tibbs@math.uh.edu>
Cc:     "Trond Myklebust" <trondmy@hammerspace.com>,
        Anna.Schumaker@netapp.com, linux-nfs@vger.kernel.org,
        Chuck.Lever@oracle.com
Subject: Re: Need help debugging NFS issues new to 4.20 kernel
Date:   Fri, 08 Feb 2019 07:01:11 -0500
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On 7 Feb 2019, at 10:25, Jason Tibbitts wrote:

>>>>>> "BC" == Benjamin Coddington <bcodding@redhat.com> writes:
>
> BC> -10063 is -NFS4ERR_SEQ_MISORDERED.. I wonder why the
> BC> trace_nfs4_sequence_done() in nfs41_sequence_process() isn't showing
> BC> up in the trace?  Ah.. my fault - add "nfs4:*" to the set_events.
>
> OK, attached is another trace.  Here's the same sequence I snipped
> previously:

So the client is calling SEQ over and over.. xs_stream_read_data sees
-EAGAIN.. I'm not an expert here, and not seeing what's going wrong.

Hmm.. commit c443305529d1d3d3bee0d68fdd14ae89835e091f changed
xs_read_stream_reply() to return recv.copied instead of "ret" to
xprt_complete_rqst()..

You could try reverting that commit and see if the problem goes away..

Ben