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[nfsv4] Re: Our different approaches to draft POSIX ACL support in NFSv4

Chuck Lever III <chuck.lever@oracle.com> Thu, 25 July 2024 13:50 UTC

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From: Chuck Lever III <chuck.lever@oracle.com>
To: Rick Macklem <rick.macklem@gmail.com>
Thread-Topic: [nfsv4] Our different approaches to draft POSIX ACL support in NFSv4
Thread-Index: AQHa3pmP/rXNIfc4c0Oi+QsRgEyXLg==
Date: Thu, 25 Jul 2024 13:50:08 +0000
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Subject: [nfsv4] Re: Our different approaches to draft POSIX ACL support in NFSv4
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> On Jul 25, 2024, at 9:44 AM, Rick Macklem <rick.macklem@gmail.com> wrote:
> 
> Christoph pointed out to me that having multiple ACLs on a file is not
> reasonable.  The draft I am writing will require a server to only support
> one ACL model/file. (I think it needs to be a server choice and could be
> indicated to the client by which attributes are supported for the fiile.
> (This is related to the last point.  I'll leave the rest for others.)

I agree there should be one per file, and that the server's
local file system should determine which type of ACL it can
support. (I don't envision a scenario where one file system
could support multiple types of ACLs).


> It would be nice if, somehow, the Linux folk could determine how often
> the mapped NFSv4 ACLs are used on the Linux NFSv4 servers?

As far as I am aware, NFSD does not use mapped ACLs, but I
haven't done an in-depth look.


--
Chuck Lever

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