[Bug 1270445] Re: slow NFS4 without "NEED_GSSD=yes"

[Anders Hall]

This must be related or same (older) bug:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/84899

"Gabriel de Perthuis (g2p) wrote on 2012-10-24:         #70

So here's a list of the workarounds:

On the client:
# disable reverse lookups in kerberos
echo $'[libdefaults]\n\trdns=false' |sudo tee -a /etc/krb5.conf
# Alternatively, remove mdns, mdns4, mdns6 from nsswitch
/etc/nsswitch.conf
# Or disable GSSAPIAuthentication in ~/.ssh/config or /etc/ssh/ssh_config or with the -o flag
GSSAPIAuthentication=no

On the server:
GSSAPIAuthentication=no in /etc/ssh/sshd_config

Fixes that require coding would be the one at http://bugs.debian.org/409360#40 which seems simple enough.
Paliatives would be a cache of notfound results in avahi or in sshd (so that the 5 seconds Avahi timeout isn't repeated for the four times ssh tries name resolution)."


** Bug watch added: Debian Bug tracker #409360
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=409360

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https://bugs.launchpad.net/bugs/1270445

Title:
  slow NFS4 without "NEED_GSSD=yes"

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

Bug description:
  Ubuntu 14.04 NFS4 client has slow access to NFS - share, if standard
  in /etc/default/nfs-common is left as "NEED_GSSD=".

  In syslog message 
  [406568.806179] RPC: AUTH_GSS upcall timed out.  
  [406568.806179] Please check user daemon is running.
  can be found.

  If default is changed to "NEED_GSSD=yes" access speeds up to normal (= good as in 12.04).
  I do not use Kerberos, so to set this option to "yes" does not make sense.

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