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From:   Anthony Joseph Messina <amessina@messinet.com>
To:     Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: NFS client cannot "see" files or directories in /home/<username>
Date:   Sun, 13 Sep 2020 12:22:25 -0500
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On Saturday, August 29, 2020 5:52:19 PM CDT Anthony Joseph Messina wrote:
> I've reported this issue to Fedora:
> https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org/
> thread/YECR5Q4LLTEQO3RNSXXKOCZUZF53UAST/
> https://bugzilla.redhat.com/show_bug.cgi?id=1873720
> 
> I've got an NFS client that mounts /home via NFSv4.2 with sec=krb5p.  Any
> kernel since 5.7.17 through 5.8.4 is unable to "see" files or directories in
> the mounted /home/<username> directory with the exception of the first
> "dot" directory.
> 
> While I cannot see /home/<username>/subdirectory, if I manually cd into
> /home/ <username>/subdirectory, I can list that subdirectory's contents as
> normal.
> 
> If I mv "/home/<username>/.dotdir" to "/home/<username>/.dotdir.old", I can
> no longer see it, and I can see "/home/<username>/.dotnextdir".
> 
> If I then mv "/home/<username>/.dotdir.old" back to "/home/
> <username>/.dotdir", I am not able to see it and can still only see "/home/
> <username>/.dotnextdir"
> 
> My last NFS client that can "see" /home/<username> directory contents
> (normal operation) is kernel-5.7.15 (I was unable to test 5.7.16)
> 
> NFS server upgrades from kernel-5.7.15 through kernel-5.8.4 didn't seem to
> have any affect.
> 
> I understand this list is for developers, but I'm wondering if any of the
> NFS experts can point me in the right direction...  Thank you.

The Fedora bugzilla provides additional information:

In https://bugzilla.redhat.com/show_bug.cgi?id=1873720#c7 a user reports the commit that creates the issue:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=b4487b93545214a9db8cbf32e86411677b0cca21

In https://bugzilla.redhat.com/show_bug.cgi?id=1873720#c12 another user reports the relationship with exports using the "security_label" option

-- 
Anthony - https://messinet.com
F9B6 560E 68EA 037D 8C3D  D1C9 FF31 3BDB D9D8 99B6

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