[Bug 1454112] Re: Group permissions not respected with "--manage-gids" enabled

[Marko Martinović]

Can confirm with Ubuntu 16.04 LTS. Workaround was to disable -manage-
gids option (in /etc/default/nfs-kernel-server) but something is clearly
broken.

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Title:
  Group permissions not respected with "--manage-gids" enabled

Status in nfs-utils package in Ubuntu:
  Confirmed

Bug description:
  user at cloudVM:/mnt/extraFiles/chroot/home$ ls -l
  total 20
  drwxrws--- 6 storageUsers storageUsers 4096 maj 12 08:14 actualCommonFiles
  drwxr-xr-x 2 root         root         4096 maj 12 07:32 commonFilesR
  drwxrwxr-x 8 user  user  4096 maj 12 08:14 user
  drwxrwxr-x 2 user  user  4096 maj  9 16:52 guest
  drwxr-xr-x 3 storageUsers storageUsers 4096 maj 12 08:50 test

  user at cloudVM:/mnt/extraFiles/chroot/home$ groups
  user storageUsers commonFilesRW

       ---With "--manage-gids" enabled in /etc/default/nfs-kernel-server (default for Ubuntu 14.04):
  user at cloudVM:/mnt/extraFiles/chroot/home$ cd actualCommonFiles/
  bash: cd: actualCommonFiles/: Permission denied

       ---Without --manage-gids":
  user at cloudVM:/mnt/extraFiles/chroot/home$ cd actualCommonFiles/
  user at cloudVM:/mnt/extraFiles/chroot/home/actualCommonFiles$

  ========

  - Expected:

  "user" is member of "storageUsers" and should have Read, Write, and
  List rights for "actualCommonFiles". "cd" should be successful.

  - Happened:

  "user" was denied access to the "storageUsers" directory.

  =======

  - This bug has been filed a long time ago
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/409366 but was
  closed.

  - NFS Server:

  Release:
     Ubuntu 14.04.2 LTS
  nfs-kernel-server version:
     Installed: 1:1.2.8-6ubuntu1

  - NFS Client:

  Release:
     Debian 8
  nfs-common:
     Installed: 1:1.2.8-9

  //Please excuse any mistakes, this is my first bug report, Thank You.

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