NFS / ACL/ XFS

ssk

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Jul 15, 2003, 4:33:25 AM7/15/03

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Hi

I have a Linux 2.4.19 based NFS server and client , both having
latest XFS filesystem. But ACL changes are not propagating to the
client from the server thru NFS. I have NFS version 3.

Does NFS support ACLs? Is there a separate patch i need to use? Also
if do setfacl from client, I get "Operation not supported".

Please help?

thanks
ssk

Max Matveev

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Jul 15, 2003, 5:38:49 AM7/15/03

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>>>>> "i_ssk" == i ssk <i_...@yahoo.com> writes:

i_ssk> Hi
i_ssk> I have a Linux 2.4.19 based NFS server and client , both having
i_ssk> latest XFS filesystem. But ACL changes are not propagating to the
i_ssk> client from the server thru NFS. I have NFS version 3.

i_ssk> Does NFS support ACLs?
There is no standard ACL protocol for NFS V2 or V3, so Irix<->Irix -
yes, Solaris<->Solaris - yes, Irix<->{Linux|Solaris|HPUX|etc} - no.

i_ssk> Is there a separate patch i need to use? Also
i_ssk> if do setfacl from client, I get "Operation not supported".
Where were rumours about somebody working on ACL support in Linux NFS,
but it was in 2.5.

max

Mike O'Connor

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Jul 15, 2003, 9:27:03 AM7/15/03

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In article <netk7ak...@kuku.melbourne.sgi.com>,
Max Matveev <max.m...@sgi.com> wrote:

:>>>>> "i_ssk" == i ssk <i_...@yahoo.com> writes:
:
: i_ssk> Hi
: i_ssk> I have a Linux 2.4.19 based NFS server and client , both having
: i_ssk> latest XFS filesystem. But ACL changes are not propagating to the
: i_ssk> client from the server thru NFS. I have NFS version 3.
:
: i_ssk> Does NFS support ACLs?
:There is no standard ACL protocol for NFS V2 or V3, so Irix<->Irix -
:yes, Solaris<->Solaris - yes, Irix<->{Linux|Solaris|HPUX|etc} - no.

It was decided explicitly to _not_ deal with ACLs in NFS3 so that way the
NFS3 standard would get out faster.

: i_ssk> Is there a separate patch i need to use? Also

: i_ssk> if do setfacl from client, I get "Operation not supported".
:Where were rumours about somebody working on ACL support in Linux NFS,
:but it was in 2.5.

There's an ACL weenies list (http://acl.bestbits.at/pipermail/acl-devel/)
that has various options for ACLs and NFS over ACLs, some in the Linux 2.4
context. The big issue isn't really the NFS or wire protocol to exchange
the ACLs, but the filesystem or other backend being able to support ACLs.

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Ali-Reza Anghaie

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Jul 15, 2003, 7:55:29 PM7/15/03

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ssk wrote:
> I have a Linux 2.4.19 based NFS server and client , both having
> latest XFS filesystem. But ACL changes are not propagating to the
> client from the server thru NFS. I have NFS version 3.

You need both the XFS patches and the patches from http://acl.bestbits.at/
.. some work to get there but docs are well enough.

> Does NFS support ACLs? Is there a separate patch i need to use? Also
> if do setfacl from client, I get "Operation not supported".

NFSv3 doesn't have an ACL standard. Actually, the POSIX 'standard' never
came out of draft for ACLs in the first place but it's rather common and
well-enough understood.

NFSv4 has ACL support in the standard more-or-less like the NT ACL model.
Although the Linux implementation is still quite immature but I understand
rapidly developing.

Cheers, -Ali

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