I tried the same thing and got the same results as you. So, that's not
it at all. 

Then I did a search...

http://www.linuxquestions.org/questions/mandriva-30/setfacl-test-operation-not-supported-266804/

Notice that you may need to mount the filesystem with acl support. 


On Sat, 2009-02-14 at 21:20 -0700, Jason wrote:
> Since it's Ubuntu, have you tried running it as sudo?
> 
> $sudo setfacl -m u:linux77:rwx file.txt
> 
> On Sun, 2009-02-15 at 03:42 +0000, Tameek Henderson wrote:
> > I tried it with the UID and still no dice.  Hmmm...
> > 
> > 
> > 
> > 
> > 
> > ------Original Message------
> > From: Bob Elzer
> > To: tameekhenderson@gmail.com
> > To: plug-discuss@lists.plug.phoenix.az.us
> > Sent: Feb 14, 2009 8:32 PM
> > Subject: RE: Access Control Lists
> > 
> > I'm not sure since I don't use ACL's but the manual say it should be the UID
> > not the name of the user (linux77).
> > 
> >  
> > -----Original Message-----
> > From: plug-discuss-bounces@lists.plug.phoenix.az.us
> > [mailto:plug-discuss-bounces@lists.plug.phoenix.az.us] On Behalf Of Tameek
> > Henderson
> > Sent: Saturday, February 14, 2009 8:04 PM
> > To: plug-discuss@lists.plug.phoenix.az.us
> > Subject: Access Control Lists
> > 
> > Hey gang,
> > 
> > I'm trying to set an access control on a file but I keep receiving an error
> > that the operation is not supported.  Here is the command I give:
> > 
> > $setfacl -m u:linux77:rwx file.txt
> > 
> > Here is the exact error:
> > 
> > Setfacl: file.txt: Operation not supported
> > 
> > Help!  :-p
> > 
> > 
> > 
> > 
> > Tameek Henderson
> > 646.427.3205
> > http://www.linkedin.com/pub/5/116/522
> > 
> > Sent via BlackBerry from T-Mobile
> > ---------------------------------------------------
> > PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us
> > To subscribe, unsubscribe, or to change your mail settings:
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> > 
> > 
> > 
> > Tameek Henderson
> > 646.427.3205
> > http://www.linkedin.com/pub/5/116/522
> > 
> > Sent via BlackBerry from T-Mobile
> > ---------------------------------------------------
> > PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us
> > To subscribe, unsubscribe, or to change your mail settings:
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