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[Bug 1294283] Re: Memory balloning in Hyper-V generation 2 does not work

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>
Date: Thu, 13 Aug 2015 11:43:51 -0000
Reply-to: Bug 1294283 <1294283@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
I have not reproduced this bug as I don't have and environment to do so.
Maybe Jan Henke, the original bug reporter, can confirm your question in
comment #42?

The Wily and Vivid test kernels I built only have the following commit
cherry-picked per comment #34:

commit 4e4bd36f97b1492f19b3329ac74ed313da13de34
Author: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
Date:   Fri May 29 11:18:02 2015 -0700


Looking at the patches you mentioned in comment #42, are the following
two commits in mainline also needed to fix this bug?

commit 7ace99170789bc53cbb7e9e352d7a3851208fbcf
Author: Mel Gorman <mgorman@xxxxxxx>
Date:   Thu Aug 6 15:46:13 2015 -0700

    mm, meminit: allow early_pfn_to_nid to be used during runtime

commit e298ff75f133f2524bb6a9a305b17c5f6ff1a6b2
Author: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Date:   Thu Aug 6 15:46:51 2015 -0700

    mm: initialize hotplugged pages as reserved

These last two commits were in mainline as of v4.2-rc6.

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https://bugs.launchpad.net/bugs/1294283

Title:
  Memory balloning in Hyper-V generation 2 does not work

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Trusty:
  In Progress
Status in linux source package in Utopic:
  In Progress
Status in linux source package in Vivid:
  In Progress
Status in linux source package in Wily:
  In Progress

Bug description:
  The generation 2 VM has been assinged a memory range of 512 MiB-
  4096MiB with a starting memory of 512 MiB. It should get additional
  memory when needed, but the total available memory in the VM stays at
  the intial 512 MiB and the kernel starts swapping instead of
  allocating more memory from the host.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-18-generic 3.13.0-18.38
  ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6
  Uname: Linux 3.13.0-18-generic x86_64
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: XFCE
  Date: Tue Mar 18 19:28:54 2014
  HibernationDevice: RESUME=UUID=0d223c65-8c7e-41b4-95b3-05b22ff4679b
  InstallationDate: Installed on 2014-03-12 (6 days ago)
  InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140312)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  Lspci:
   
  Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
  MachineType: Microsoft Corporation Virtual Machine
  ProcFB: 0 hyperv_fb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-18-generic.efi.signed root=UUID=61b52c1b-300d-4c30-8966-db1745f4a4bc ro video=hyperv_fb:1920x1080 quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-18-generic N/A
   linux-backports-modules-3.13.0-18-generic  N/A
   linux-firmware                             1.126
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/26/2012
  dmi.bios.vendor: Microsoft Corporation
  dmi.bios.version: Hyper-V UEFI Release v1.0
  dmi.board.asset.tag: None
  dmi.board.name: Virtual Machine
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: Hyper-V UEFI Release v1.0
  dmi.chassis.asset.tag: 6485-6574-9248-6162-4701-6267-50
  dmi.chassis.type: 3
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: Hyper-V UEFI Release v1.0
  dmi.modalias: dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev1.0:bd11/26/2012:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev1.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev1.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev1.0:
  dmi.product.name: Virtual Machine
  dmi.product.version: Hyper-V UEFI Release v1.0
  dmi.sys.vendor: Microsoft Corporation
  --- 
  ApportVersion: 2.14-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=2673d21f-4b48-43f1-9b06-8c141a492700
  InstallationDate: Installed on 2014-03-29 (9 days ago)
  InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  Lspci:
   
  Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
  MachineType: Microsoft Corporation Virtual Machine
  Package: linux (not installed)
  ProcFB: 0 hyperv_fb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-22-generic.efi.signed root=UUID=cccf5e59-012e-4ab5-a6ba-08850e60aba1 ro video=hyperv_fb:1920x1080 quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-22.44-generic 3.13.8
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-22-generic N/A
   linux-backports-modules-3.13.0-22-generic  N/A
   linux-firmware                             1.127
  RfKill:
   
  Tags:  trusty
  Uname: Linux 3.13.0-22-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 11/26/2012
  dmi.bios.vendor: Microsoft Corporation
  dmi.bios.version: Hyper-V UEFI Release v1.0
  dmi.board.asset.tag: None
  dmi.board.name: Virtual Machine
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: Hyper-V UEFI Release v1.0
  dmi.chassis.asset.tag: 6485-6574-9248-6162-4701-6267-50
  dmi.chassis.type: 3
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: Hyper-V UEFI Release v1.0
  dmi.modalias: dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev1.0:bd11/26/2012:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev1.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev1.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev1.0:
  dmi.product.name: Virtual Machine
  dmi.product.version: Hyper-V UEFI Release v1.0
  dmi.sys.vendor: Microsoft Corporation
  --- 
  ApportVersion: 2.14.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=2673d21f-4b48-43f1-9b06-8c141a492700
  InstallationDate: Installed on 2014-03-29 (12 days ago)
  InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  Lspci:
   
  Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
  MachineType: Microsoft Corporation Virtual Machine
  Package: linux (not installed)
  ProcFB: 0 hyperv_fb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-23-generic.efi.signed root=UUID=cccf5e59-012e-4ab5-a6ba-08850e60aba1 ro video=hyperv_fb:1920x1080 quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-23-generic N/A
   linux-backports-modules-3.13.0-23-generic  N/A
   linux-firmware                             1.127
  RfKill:
   
  Tags:  trusty
  Uname: Linux 3.13.0-23-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 11/26/2012
  dmi.bios.vendor: Microsoft Corporation
  dmi.bios.version: Hyper-V UEFI Release v1.0
  dmi.board.asset.tag: None
  dmi.board.name: Virtual Machine
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: Hyper-V UEFI Release v1.0
  dmi.chassis.asset.tag: 6485-6574-9248-6162-4701-6267-50
  dmi.chassis.type: 3
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: Hyper-V UEFI Release v1.0
  dmi.modalias: dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev1.0:bd11/26/2012:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev1.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev1.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev1.0:
  dmi.product.name: Virtual Machine
  dmi.product.version: Hyper-V UEFI Release v1.0
  dmi.sys.vendor: Microsoft Corporation

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References

[Bug 1294283] [NEW] Memory balloning in Hyper-V generation 2 does not work
From: Jan Henke, 2014-03-18