The file /etc/request-key.conf will need to be modified so /sbin/request-key can direct the upcall. The following line should be added: #OP TYPE DESCRIPTION CALLOUT INFO PROGRAM ARG1 ARG2 ARG3 ... #====== ======= =============== =============== =============================== create id_resolver * * /usr/sbin/nfs.idmap %k %d 600 This will direct all id_resolver requests to the program /usr/sbin/nfs.idmap.
This entry does not exist in request-key.conf as of Ubuntu 12.04. I have seen several different conflicting reports about this:
- nfs.idmap upcall is obsolete and rpc.idmapd should be used instead
- rpc.idmapd is obsolete and nfs.idmap should be used instead
- The kernel automatically juggles between the two (which does it prefer?)
Can anyone shed any light on this?