[Bug 1077386] [NEW] After upgrading NFS4 server to Ubuntu Quantal, krb5 mounts hang under nfs-utils 1.2.6-3ubuntu2

[AleksanderAdamowski]

Public bug reported:

This is probably a manifestation of upstream Debian bug:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=682709

After upgrading my server from Precise Pangolin to Quantal Quetzal, the
NFS4 service's mounts from clients started to hang.

Looking at verbose logs of all involved RPC daemons, the problem seems
to either be with rpc.svcgssd or rpc.mountd, which are contained in nfs-
kernel-server package. The last lines reported in the verbose daemon
logs are:

Nov 10 12:25:26 hostname rpc.svcgssd[1547]: entering poll
Nov 10 12:25:26 hostname rpc.mountd[1550]: auth_unix_ip: inbuf 'nfsd 192.168.1.123'

WORKING WORKAROUND:

Downgrade nfs to the version from Precise Pangolin and prevent it from
being automatically upgraded to the Quantal version:

$ wget http://de.archive.ubuntu.com/ubuntu/pool/main/n/nfs-utils/nfs-
common_1.2.5-3ubuntu3.1_amd64.deb

$ wget http://de.archive.ubuntu.com/ubuntu/pool/main/n/nfs-utils/nfs-
kernel-server_1.2.5-3ubuntu3.1_amd64.deb

$ sudo dpkg -i nfs-common_1.2.5-3ubuntu3.1_amd64.deb nfs-kernel-
server_1.2.5-3ubuntu3.1_amd64.deb

$ (echo "nfs-common hold"; echo "nfs-kernel-server hold") | sudo dpkg
--set-selections

** Affects: nfs-utils (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  This is probably a manifestation of upstream Debian bug:
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=682709
  
  After upgrading my server from Precise Pangolin to Quantal Quetzal, the
  NFS4 service's mounts from clients started to hang.
  
  Looking at verbose logs of all involved RPC daemons, the problem seems
  to either be with rpc.svcgssd or rpc.mountd, which are contained in nfs-
  kernel-server package. The last lines reported in the verbose daemon
  logs are:
  
  Nov 10 12:25:26 hostname rpc.svcgssd[1547]: entering poll
  Nov 10 12:25:26 hostname rpc.mountd[1550]: auth_unix_ip: inbuf 'nfsd 192.168.1.123'
  
  WORKING WORKAROUND:
  
  Downgrade nfs to the version from Precise Pangolin and prevent it from
  being automatically upgraded to the Quantal version:
  
- wget http://de.archive.ubuntu.com/ubuntu/pool/main/n/nfs-utils/nfs-common_1.2.5-3ubuntu3.1_amd64.deb
- wget http://de.archive.ubuntu.com/ubuntu/pool/main/n/nfs-utils/nfs-kernel-server_1.2.5-3ubuntu3.1_amd64.deb
+ $ wget http://de.archive.ubuntu.com/ubuntu/pool/main/n/nfs-utils/nfs-
+ common_1.2.5-3ubuntu3.1_amd64.deb
+ 
+ $ wget http://de.archive.ubuntu.com/ubuntu/pool/main/n/nfs-utils/nfs-
+ kernel-server_1.2.5-3ubuntu3.1_amd64.deb
  
  $ sudo dpkg -i nfs-common_1.2.5-3ubuntu3.1_amd64.deb nfs-kernel-
  server_1.2.5-3ubuntu3.1_amd64.deb
  
  $ (echo "nfs-common hold"; echo "nfs-kernel-server hold") | sudo dpkg
  --set-selections

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https://bugs.launchpad.net/bugs/1077386

Title:
  After upgrading NFS4 server to Ubuntu Quantal, krb5 mounts hang under
  nfs-utils 1.2.6-3ubuntu2

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

Bug description:
  This is probably a manifestation of upstream Debian bug:
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=682709

  After upgrading my server from Precise Pangolin to Quantal Quetzal,
  the NFS4 service's mounts from clients started to hang.

  Looking at verbose logs of all involved RPC daemons, the problem seems
  to either be with rpc.svcgssd or rpc.mountd, which are contained in
  nfs-kernel-server package. The last lines reported in the verbose
  daemon logs are:

  Nov 10 12:25:26 hostname rpc.svcgssd[1547]: entering poll
  Nov 10 12:25:26 hostname rpc.mountd[1550]: auth_unix_ip: inbuf 'nfsd 192.168.1.123'

  WORKING WORKAROUND:

  Downgrade nfs to the version from Precise Pangolin and prevent it from
  being automatically upgraded to the Quantal version:

  $ wget http://de.archive.ubuntu.com/ubuntu/pool/main/n/nfs-utils/nfs-
  common_1.2.5-3ubuntu3.1_amd64.deb

  $ wget http://de.archive.ubuntu.com/ubuntu/pool/main/n/nfs-utils/nfs-
  kernel-server_1.2.5-3ubuntu3.1_amd64.deb

  $ sudo dpkg -i nfs-common_1.2.5-3ubuntu3.1_amd64.deb nfs-kernel-
  server_1.2.5-3ubuntu3.1_amd64.deb

  $ (echo "nfs-common hold"; echo "nfs-kernel-server hold") | sudo dpkg
  --set-selections

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