enabling extended attributes in ext3 under RHEL4

Hello,

I'm trying to use extended attributes in the ext3 file system under
RHEL4. Right now, I'm getting a not supported error:

$ attr -s foo -V bar foo
attr_set: Operation not supported
Could not set "foo" for foo

I have mounted my ext3 file system with the acl option (as I
understand, acls are implemented on top of extended attributes, so I
would think that enabling acls would enable xattrs, but maybe I'm
wrong).

I didn't see a mount option for enabling extended attributes -- did I
miss anything?

Thanks,
Scott

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