[Bug 1284210] [NEW] nfs-kernel-server mountd check only checks for nfsv3 via UDP, not TCP

[Christian Reis]

Public bug reported:

I recently disabled UDP on our NFS server by setting --no-udp (or -U)
and all of a sudden I could no longer get nfsv3 mounts to work. It turns
out that this happens because of the check in /etc/init.d/nfs-kernel-
server:

        rpcinfo -u localhost nfs 3 >/dev/null 2>&1 ||
                RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 3"

That line only uses rpcinfo -u, so disabling UDP breaks the check. It
should probably be something like:

       rpcinfo -u localhost nfs 3 >/dev/null 2>&1 ||
                rpcinfo -t localhost nfs 3 >/dev/null 2>&1 ||
                RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 3"

** Affects: nfs-utils (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1284210

Title:
  nfs-kernel-server mountd check only checks for nfsv3 via UDP, not TCP

Status in “nfs-utils” package in Ubuntu:
  New

Bug description:
  I recently disabled UDP on our NFS server by setting --no-udp (or -U)
  and all of a sudden I could no longer get nfsv3 mounts to work. It
  turns out that this happens because of the check in /etc/init.d/nfs-
  kernel-server:

          rpcinfo -u localhost nfs 3 >/dev/null 2>&1 ||
                  RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 3"

  That line only uses rpcinfo -u, so disabling UDP breaks the check. It
  should probably be something like:

         rpcinfo -u localhost nfs 3 >/dev/null 2>&1 ||
                  rpcinfo -t localhost nfs 3 >/dev/null 2>&1 ||
                  RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 3"

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