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Date:   Sun, 4 Sep 2022 08:48:42 -0400
From:   "Theodore Ts'o" <tytso@mit.edu>
To:     Chuck Lever III <chuck.lever@oracle.com>
Cc:     Linux NFS Mailing List <linux-nfs@vger.kernel.org>,
        "fstests@vger.kernel.org" <fstests@vger.kernel.org>
Subject: Re: generic/650 makes v6.0-rc client unusable
Message-ID: <YxSeqjkKvz+Y2AcP@mit.edu>
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On Sat, Sep 03, 2022 at 06:43:29PM +0000, Chuck Lever III wrote:
> While investigating some of the other issues that have been
> reported lately, I've found that my v6.0-rc3 NFS/TCP client
> goes off the rails often (but not always) during generic/650.
> 
> This is the test that runs a workload while offlining and
> onlining CPUs. My test client has 12 physical cores.
> 
> The test appears to start normally, but then after a bit
> the NFS server workload drops to zero and the NFS mount
> disappears. I can't run programs (sudo, for example) on
> the client. Can't log in, even on the console. The console
> has a constant stream of "can't rotate log: Input/Output
> error" type messages.

I've noticed problems with generic/650 for quite a while, but only
when running tests on GCE (but not KVM).  I noted this not when
running xfstests on ext4; IIRC, it was was causing the VM to reboot
when testing any file system.

							- Ted

commit 6e7867469bd3b135125a76e633e0bb50045ccb3c
Author: Theodore Ts'o <tytso@mit.edu>
Date:   Fri Oct 22 23:24:31 2021 -0400

    test-appliance: allow tests to be excluded based on the appliance flavor
    
    The generic/650 test causes an instant reboot on GCE, so add
    infrastructure to exclude a test based on the test appliance flavor
    (i.e., android, gce, or kvm).
    
    Signed-off-by: Theodore Ts'o <tytso@mit.edu>