[Bug 665738] Re: NFS4: exports options are ignored for subdirs

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** Changed in: nfs-utils (Debian)
       Status: Confirmed => Fix Released

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Title:
  NFS4: exports options are ignored for subdirs

Status in “nfs-utils” package in Ubuntu:
  New
Status in “nfs-utils” package in Debian:
  Fix Released

Bug description:
  I am trying to set up a new NFS4 server, but it seems like the server respects options which are defined for the export _root_ directory (fsid=0), ignores deviating options that are specified for any of the exported subdirectories (i.e., the settings for the 
  root dir are used instead).

  Example:

  I followed the instructions on
  https://help.ubuntu.com/community/SettingUpNFSHowTo and made this
  example /etc/exports on the server:

  /opt/exports/test           192.168.10.14/32(rw,fsid=0,insecure,no_subtree_check)
  /opt/exports/test/dir1      192.168.10.14/32(rw,root_squash,insecure,no_subtree_check,async)
  /opt/exports/test/dir2      192.168.10.14/32(rw,no_root_squash,insecure,no_subtree_check,async)

  I mount it on the client (192.168.10.14):

  # mount -t nfs4 -o proto=tcp nfsserver:/ test/
  # mount -t nfs4 -o proto=tcp nfsserver:/dir1 dir1/
  # mount -t nfs4 -o proto=tcp nfsserver:/dir2 dir2/

  root should be able to write to test/dir2 and dir2, but:

  # touch test/x test/dir1/x test/dir2/x dir1/x dir2/x
  touch: cannot touch `test/x': Permission denied
  touch: cannot touch `test/dir1/x': Permission denied
  touch: cannot touch `test/dir2/x': Permission denied
  touch: cannot touch `dir1/x': Permission denied
  touch: cannot touch `dir2/x': Permission denied

  If I, however, change /etc/exports on the server to:

  /opt/exports/test           192.168.10.14/32(rw,fsid=0,no_root_squash,insecure,no_subtree_check)
  /opt/exports/test/dir1      192.168.10.14/32(rw,root_squash,insecure,no_subtree_check,async)
  /opt/exports/test/dir2      192.168.10.14/32(rw,no_root_squash,insecure,no_subtree_check,async)

  and umount the dirs on the client, run "exportfs -ra" (or reboot or
  restart of nfs-kernel-server) and then mount the same dirs as before,
  I should be able to write to test, test/dir2 and dir2. However:

  # touch test/x test/dir1/x test/dir2/x dir1/x dir2/x
  #

  The server does not respect the options for the subdirs.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: nfs-kernel-server 1:1.2.0-4ubuntu4
  ProcVersionSignature: Ubuntu 2.6.32-25.45-server 2.6.32.21+drm33.7
  Uname: Linux 2.6.32-25-server x86_64
  Architecture: amd64
  Date: Sun Oct 24 00:59:43 2010
  InstallationMedia: Ubuntu-Server 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.2)
  SourcePackage: nfs-utils

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