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Date:   Mon, 23 Aug 2021 10:48:02 -0400
To:     linux-nfs@vger.kernel.org
Subject: sporadic generic/154 failure
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From:   bfields@fieldses.org (J. Bruce Fields)
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List-ID: <linux-nfs.vger.kernel.org>
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I'm seeing generic/154 failing sometimes.

It does a "cp --reflink" (which uses FI_CLONE, which results in a
->remap_file_range call that NFS maps to the CLONE operation), then
overwriting parts of the fire, and checking free blocks (with "stat -f
/path -c "%f") at various points, and failing when the number of free
blocks is outside an expected range.

I don't know if it might be some caching issue, or something about how
NFS reports free blocks.

Honestly it looks unlikely to be critical, so for now I'm ignoring
it....

--b.