[Bug 976632] Re: nfs4 mounts are not mapping userids, uses nobody/nogroup

[Patola]

Just tested with kernel 3.0.0-17, the same that machine B is using
(although on machine C it's a 64-bit kernel), and the issue remains, the
userids are all mapped to anonymous. So it must not be a kernel issue...

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Title:
  nfs4 mounts are not mapping userids, uses nobody/nogroup

Status in “util-linux” package in Ubuntu:
  New

Bug description:
  I have:
  machine A - NFS4 server, Ubuntu 11.10
  machine B - NFS4 client, Ubuntu 11.10
  machine C - NFS4 client, Ubuntu 12.04 (development)

  All machines have the same userids and group ids.

  Machine 4 exports are the following:

  /export/dir1  10.0.0.0/24(rw,nohide,insecure,no_subtree_check,async)
  /export/dir2 10.0.0.0/24(rw,nohide,insecure,no_subtree_check,async)
  /export/dir3        10.0.0.0/24(rw,nohide,insecure,no_subtree_check,async)

  On both Machine B and C, the mounts are defined in fstab as:

  10.0.0.1:/dir1        /mnt/mydir      nfs4    _netdev,soft,retry=2,auto    0       0
  10.0.0.1:/dir2       /mnt/mydir2     nfs4    _netdev,soft,retry=2,auto    0       0
  10.0.0.1:/dir3      /mnt/startrek   nfs4    _netdev,soft,retry=2,auto    0       0

  These NFS shares have been configured for about 6 months, no change to
  the configuration.

  However, on the newly upgraded machine C, when the NFS4 filesystems
  are mounted, *all files* (with different users on machine A) map to
  nobody/nogroup. I even tried changing some options on machine A (like
  adding no_all_squash then re-exporting it) to no avail. I also tried
  manually mounting the filesystems using the "mount" command on machine
  C and the same thing happened. Before upgrading, the mounts were
  working correctly. On machine B with Ubuntu 11.10, they also work
  correctly.

  mount is version 2.20.1-1ubuntu3, nfs-common (which has
  /sbin/mount.nfs4) is version 1:1.2.5-3ubuntu2.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: mount 2.20.1-1ubuntu3
  ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
  Uname: Linux 3.2.0-22-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0-0ubuntu4
  Architecture: amd64
  Date: Sun Apr  8 11:55:58 2012
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110426)
  SourcePackage: util-linux
  UpgradeStatus: Upgraded to precise on 2012-04-06 (2 days ago)

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