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[tbuennemann <buennemann@xxxxxxxxxxxxxxxxxxxxxxxxx>]

apport information

** Attachment added: "CRDA.txt"
   https://bugs.launchpad.net/bugs/1597201/+attachment/4692117/+files/CRDA.txt

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https://bugs.launchpad.net/bugs/1597201

Title:
  16.04 LTS NFS4 Client hangs when copying large files

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  When doing simple copy-jobs with large files (f.ex. Partition Images > 4 GByte filesize)the file transfer allways stall after about 16 GByte has passed to the Client.
  No Problems using kernel-versions up to kernel 4.2 (Ubuntu 14.04 up to 15.10).
  Verified with new installations of 16.04 LTS as well as upgraded (previous working) 15.10 workstations to 16.04 LTS.

  Autonegotiated NFS-values are still the same:

  Working 15.10 version:
  server:/informatik/ab on /informatik/ab type nfs4 (rw,relatime,vers=4.0,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=krb5,clientaddr=134.100.9.19,local_lock=none,addr=XXX.XXX.XXX.XXX)

  Failing 16.04 LTS Version:
  server:/informatik/ab on /informatik/ab type nfs4 (rw,relatime,vers=4.0,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=krb5,clientaddr=134.100.9.19,local_lock=none,addr=XXX.XXX.XXX.XXX)
  --- 
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 16.04
  HibernationDevice: RESUME=UUID=cd090c32-9f7e-4bd7-8c80-a4db905603a6
  InstallationDate: Installed on 2016-03-30 (90 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  MachineType: Microsoft Corporation Virtual Machine
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 hyperv_fb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-24-generic root=UUID=1339be3a-6951-42eb-b098-3f21cb2aeb60 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-24-generic N/A
   linux-backports-modules-4.4.0-24-generic  N/A
   linux-firmware                            1.157
  RfKill:
   
  Tags:  xenial
  Uname: Linux 4.4.0-24-generic x86_64
  UpgradeStatus: Upgraded to xenial on 2016-06-23 (5 days ago)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 05/23/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 090006
  dmi.board.name: Virtual Machine
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: 7.0
  dmi.chassis.asset.tag: 6366-7166-8325-4285-5123-7124-57
  dmi.chassis.type: 3
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: 7.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr090006:bd05/23/2012:svnMicrosoftCorporation:pnVirtualMachine:pvr7.0:rvnMicrosoftCorporation:rnVirtualMachine:rvr7.0:cvnMicrosoftCorporation:ct3:cvr7.0:
  dmi.product.name: Virtual Machine
  dmi.product.version: 7.0
  dmi.sys.vendor: Microsoft Corporation

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