On Wed, Dec 15, 2010 at 03:32:08PM -0500, Trond Myklebust wrote: > On Wed, 2010-12-15 at 15:19 -0500, J. Bruce Fields wrote: > > > Could you give an example of a case in which all of the following are > > true?: > > - the administrator explicitly requests numeric id's (for > > example by setting nfs4_disable_idmapping). > > - numeric id's work as long as the client uses auth_sys. > > - they no longer work if that same client switches to krb5. > > Trivially: > > Server /etc/passwd maps trondmy to uid 1000 > Client /etc/passwd maps trondmy to uid 500 I understand that any problematic case would involve different name<->id mappings on the two sides. What I don't understand--and apologies if I'm being dense!--is what sequence of operations exactly would work in this situation if we automatically switch idmapping based on auth flavor, and would not work without it. Are you imagining a future client that is also able to switch auth flavors on the fly (say, based on whether a krb5 ticket exists or not), or just unmounting and remounting to change the security flavor? Are you thinking of creating a file under one flavor and accessing it under another? --b. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
