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[Sergio Gelato <Sergio.Gelato@xxxxxxxxxxx>]

Public bug reported:

The following changes in 3.13.0-35.62:
 * sunrpc: create a new dummy pipe for gssd to hold open
   - LP: #1327563
 * sunrpc: replace sunrpc_net->gssd_running flag with a more reliable check
   - LP: #1327563
 * nfs: check if gssd is running before attempting to use krb5i auth in SETCLIENTID call
   - LP: #1327563
are causing rpc.gssd to fill syslog with messages of the form
ERROR: can't open /run/rpc_pipefs/gssd/clntXX/info: No such file or directory

The problem was discussed last December in https://bugzilla.redhat.com/show_bug.cgi?id=1037793
where the resolution was to include the following three patches:

http://marc.info/?l=linux-nfs&m=138624689302466&w=2
http://marc.info/?l=linux-nfs&m=138624684502447&w=2
http://marc.info/?l=linux-nfs&m=138624684502447&w=2

These patches are already in the upstream kernel (since 3.14). I suggest cherry-picking them for 3.13. Commit hashes from the 3.14 branch:
 3396f92f8be606ea485b0a82d4e7749a448b013b
 e2f0c83a9de331d9352185ca3642616c13127539
 23e66ba97127ff3b064d4c6c5138aa34eafc492f

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: cherry-pick kernel-fixed-upstream kernel-fs regression-update trusty

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https://bugs.launchpad.net/bugs/1365869

Title:
  After upgrade to 3.13.0-35.62, rpc.gssd complains about missing
  /run/rpc_pipefs/gssd/clntXX/info

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  The following changes in 3.13.0-35.62:
   * sunrpc: create a new dummy pipe for gssd to hold open
     - LP: #1327563
   * sunrpc: replace sunrpc_net->gssd_running flag with a more reliable check
     - LP: #1327563
   * nfs: check if gssd is running before attempting to use krb5i auth in SETCLIENTID call
     - LP: #1327563
  are causing rpc.gssd to fill syslog with messages of the form
  ERROR: can't open /run/rpc_pipefs/gssd/clntXX/info: No such file or directory

  The problem was discussed last December in https://bugzilla.redhat.com/show_bug.cgi?id=1037793
  where the resolution was to include the following three patches:

  http://marc.info/?l=linux-nfs&m=138624689302466&w=2
  http://marc.info/?l=linux-nfs&m=138624684502447&w=2
  http://marc.info/?l=linux-nfs&m=138624684502447&w=2

  These patches are already in the upstream kernel (since 3.14). I suggest cherry-picking them for 3.13. Commit hashes from the 3.14 branch:
   3396f92f8be606ea485b0a82d4e7749a448b013b
   e2f0c83a9de331d9352185ca3642616c13127539
   23e66ba97127ff3b064d4c6c5138aa34eafc492f

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