[nfsv4] What error to return if destination server fails to READ within cnr_lease_time

["Adamson, Andy" <[e-mail]>]

From draft-ietf-nfsv4-minorversion2-39 Section 15.3.3.  DESCRIPTION of COPY_NOTIFY:

   If this operation succeeds, the source server will allow the
   cna_destination_server to copy the specified file on behalf of the
   given user as long as both of the following conditions are met:


      The destination server begins reading the source file before the
      cnr_lease_time expires. 



So on an inter-SSC the source server starts the cnr_lease_time upon the reply to COPY_NOTIFY, and 
if the cnr_lease_time expires prior to the beginning of the READ from the source
 server, the source server fails the READ.

1) What is the error returned by the source server on the READ? 

It’s not NFS4ERR_EXPIRED as this refers to the clients lease and will promt the client to recover the stateid.  


2) What is the error returned by the destination server on the COPY?

I would hope it is the same error as returned by READ. 

Do we need a new error code?

Suggestions? 

—>Andy