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From:   Chuck Lever III <chuck.lever@oracle.com>
To:     Trond Myklebust <trondmy@hammerspace.com>
CC:     Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: recent intermittent fsx-related failures
Thread-Topic: recent intermittent fsx-related failures
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Date:   Mon, 23 Aug 2021 15:21:26 +0000
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> On Jul 23, 2021, at 5:31 PM, Chuck Lever III <chuck.lever@oracle.com> wro=
te:
>=20
>> On Jul 23, 2021, at 4:24 PM, Trond Myklebust <trondmy@hammerspace.com> w=
rote:
>>=20
>> On Fri, 2021-07-23 at 20:12 +0000, Chuck Lever III wrote:
>>> Hi-
>>>=20
>>> I noticed recently that generic/075, generic/112, and generic/127
>>> were
>>> failing intermittently on NFSv3 mounts. All three of these tests are
>>> based on fsx.
>>>=20
>>> "git bisect" landed on this commit:
>>>=20
>>> 7b24dacf0840 ("NFS: Another inode revalidation improvement")
>>>=20
>>> After reverting 7b24dacf0840 on v5.14-rc1, I can no longer reproduce
>>> the test failures.
>>=20
>> So you are seeing file metadata updates that end up not changing the
>> ctime?
>=20
> I haven't drilled that deeply into it yet.
>=20
> Fwiw, the test runs against a tmpfs export.

Btw, I'm still seeing this failure on occasion. It had stopped
reproducing for a while, so I set it aside, but it has cropped
up again.

--
Chuck Lever