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[Khaled El Mously <1820063@xxxxxxxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu Bionic)
       Status: In Progress => Fix Committed

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Xenial)
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1820063

Title:
  [Hyper-V] KVP daemon fails to start on first boot of disco VM

Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Xenial:
  Fix Committed
Status in linux source package in Bionic:
  Fix Committed
Status in linux source package in Disco:
  Fix Released

Bug description:
  SRU Justification

  Impact: The KVP daemon fails to start on first boot due to being
  started before the hv_kvp device appears.

  Fix: Update the hv-kvp-daemon service file to start the daemon after
  device node appears.

  Regression Potential: The changes are only to the hv-kvp-daemon
  service file and adding a udev rule, so the worst case regression
  would be that the service does not start. In testing the service did
  start as expected.

  Test Case: See comment #15.

  ---

  
  Launching a recent daily image of disco on azure results in a VM in which the hv-kvp-daemon.service fails to start:

  $ systemctl status -o cat hv-kvp-daemon.service
  ● hv-kvp-daemon.service - Hyper-V KVP Protocol Daemon
     Loaded: loaded (/lib/systemd/system/hv-kvp-daemon.service; enabled; vendor pr
     Active: failed (Result: exit-code) since Thu 2019-03-14 13:07:15 UTC; 11min a
   Main PID: 219 (code=exited, status=1/FAILURE)

  Started Hyper-V KVP Protocol Daemon.
  KVP starting; pid is:219
  open /dev/vmbus/hv_kvp failed; error: 2 No such file or directory
  hv-kvp-daemon.service: Main process exited, code=exited, status=1/FAILURE
  hv-kvp-daemon.service: Failed with result 'exit-code'.

  The instance was created with:
  $ az vm create --resource-group [redacted] --image Canonical:UbuntuServer:19.04-DAILY:19.04.201903130 --size Standard_D2_v2 --name disco-0313

  As best as I can tell, the /dev/vmbus/hv_kvp isn't available when the hv-kvp-daemon.service starts, but it is available a few seconds later. Manually starting the daemon once I can ssh in works.
  ---
  ProblemType: Bug
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access '/dev/snd/': No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.10-0ubuntu23
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
  CRDA: N/A
  DistroRelease: Ubuntu 19.04
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  MachineType: Microsoft Corporation Virtual Machine
  Package: linux (not installed)
  PciMultimedia:

  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 hyperv_fb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-1011-azure root=PARTUUID=11894199-2ca2-4912-9c41-d28128744d57 ro console=tty1 console=ttyS0 panic=-1
  ProcVersionSignature: User Name 4.18.0-1011.11-azure 4.18.20
  RelatedPackageVersions:
   linux-restricted-modules-4.18.0-1011-azure N/A
   linux-backports-modules-4.18.0-1011-azure  N/A
   linux-firmware                             N/A
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  Tags:  disco uec-images
  Uname: Linux 4.18.0-1011-azure x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm audio cdrom dialout dip floppy netdev plugdev sudo video
  _MarkForUpload: True
  dmi.bios.date: 06/02/2017
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 090007
  dmi.board.name: Virtual Machine
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: 7.0
  dmi.chassis.asset.tag: 7783-7084-3265-9085-8269-3286-77
  dmi.chassis.type: 3
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: 7.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr090007:bd06/02/2017:svnMicrosoftCorporation:pnVirtualMachine:pvr7.0:rvnMicrosoftCorporation:rnVirtualMachine:rvr7.0:cvnMicrosoftCorporation:ct3:cvr7.0:
  dmi.product.name: Virtual Machine
  dmi.product.uuid: 3b0f2160-7fc4-a646-904c-4248f04792d4
  dmi.product.version: 7.0
  dmi.sys.vendor: Microsoft Corporation

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