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Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC

From Or Gerlitz <gerlitz.or@gmail.com>
Newsgroups linux.kernel
Subject Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC
Date 2015-10-21 20:50 +0200
Message-ID <qm6Ct-346-9@gated-at.bofh.it> (permalink)
References <qm4Km-nt-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, Oct 21, 2015 at 7:37 PM, Lan Tianyu <tianyu.lan@intel.com> wrote:
> This patchset is to propose a new solution to add live migration support
> for 82599 SRIOV network card.

> In our solution, we prefer to put all device specific operation into VF and
> PF driver and make code in the Qemu more general.

[...]

> Service down time test
> So far, we tested migration between two laptops with 82599 nic which
> are connected to a gigabit switch. Ping VF in the 0.001s interval
> during migration on the host of source side. It service down
> time is about 180ms.

So... what would you expect service down wise for the following
solution which is zero touch and I think should work for any VF
driver:

on host A: unplug the VM and conduct live migration to host B ala the
no-SRIOV case.

on host B:

when the VM "gets back to live", probe a VF there with the same assigned mac

next, udev on the VM will call the VF driver to create netdev instance

DHCP client would run to get the same IP address

+ under config directive (or from Qemu) send Gratuitous ARP to notify
the switch/es on the new location for that mac.

Or.
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[RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Lan Tianyu <tianyu.lan@intel.com> - 2015-10-21 19:00 +0200
  [RFC Patch 10/12] IXGBEVF: Add lock to protect tx/rx ring operation Lan Tianyu <tianyu.lan@intel.com> - 2015-10-21 19:00 +0200
    Re: [RFC Patch 10/12] IXGBEVF: Add lock to protect tx/rx ring  operation Alexander Duyck <alexander.duyck@gmail.com> - 2015-10-22 00:00 +0200
    Re: [RFC Patch 10/12] IXGBEVF: Add lock to protect tx/rx ring  operation "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-22 14:50 +0200
  [RFC Patch 08/12] IXGBEVF: Rework code of finding the end transmit desc of package Lan Tianyu <tianyu.lan@intel.com> - 2015-10-21 19:00 +0200
    Re: [RFC Patch 08/12] IXGBEVF: Rework code of finding the end  transmit desc of package Alexander Duyck <alexander.duyck@gmail.com> - 2015-10-21 23:20 +0200
      Re: [RFC Patch 08/12] IXGBEVF: Rework code of finding the end transmit  desc of package "Lan, Tianyu" <tianyu.lan@intel.com> - 2015-10-24 18:20 +0200
    Re: [RFC Patch 08/12] IXGBEVF: Rework code of finding the end  transmit desc of package "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-22 15:00 +0200
      Re: [RFC Patch 08/12] IXGBEVF: Rework code of finding the end transmit  desc of package "Lan, Tianyu" <tianyu.lan@intel.com> - 2015-10-24 18:10 +0200
  [RFC Patch 09/12] IXGBEVF: Add live migration support for VF driver Lan Tianyu <tianyu.lan@intel.com> - 2015-10-21 19:00 +0200
    Re: [RFC Patch 09/12] IXGBEVF: Add live migration support for VF  driver Alexander Duyck <alexander.duyck@gmail.com> - 2015-10-21 23:50 +0200
    Re: [RFC Patch 09/12] IXGBEVF: Add live migration support for VF  driver "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-22 14:50 +0200
  Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Or Gerlitz <gerlitz.or@gmail.com> - 2015-10-21 20:50 +0200
    Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV  NIC Alex Williamson <alex.williamson@redhat.com> - 2015-10-21 21:30 +0200
      Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Alexander Duyck <alexander.duyck@gmail.com> - 2015-10-22 01:30 +0200
      Re: [Qemu-devel] [RFC Patch 00/12] IXGBE: Add live migration support  for SRIOV NIC "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-22 14:40 +0200
        Re: [Qemu-devel] [RFC Patch 00/12] IXGBE: Add live migration  support for SRIOV NIC Alex Williamson <alex.williamson@redhat.com> - 2015-10-22 15:10 +0200
          Re: [Qemu-devel] [RFC Patch 00/12] IXGBE: Add live migration support  for SRIOV NIC "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-22 15:10 +0200
      Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Or Gerlitz <gerlitz.or@gmail.com> - 2015-10-22 18:00 +0200
        Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV  NIC Alex Williamson <alex.williamson@redhat.com> - 2015-10-22 18:20 +0200
  Re: [Qemu-devel] [RFC Patch 00/12] IXGBE: Add live migration support  for SRIOV NIC "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-22 15:00 +0200
  Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Alexander Duyck <alexander.duyck@gmail.com> - 2015-10-23 20:40 +0200
    Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV  NIC Alex Williamson <alex.williamson@redhat.com> - 2015-10-23 21:10 +0200
      Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Alexander Duyck <alexander.duyck@gmail.com> - 2015-10-23 22:10 +0200
    Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV  NIC Lan Tianyu <tianyu.lan@intel.com> - 2015-10-26 06:50 +0100
      Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Alexander Duyck <alexander.duyck@gmail.com> - 2015-10-26 16:10 +0100
        Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV  NIC Lan Tianyu <tianyu.lan@intel.com> - 2015-10-29 07:30 +0100
          Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Alexander Duyck <alexander.duyck@gmail.com> - 2015-10-29 08:00 +0100
            Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV  NIC Lan Tianyu <tianyu.lan@intel.com> - 2015-10-29 09:50 +0100
              Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Alexander Duyck <alexander.duyck@gmail.com> - 2015-10-29 17:20 +0100
                Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV  NIC Lan Tianyu <tianyu.lan@intel.com> - 2015-10-30 04:00 +0100
                Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Alexander Duyck <alexander.duyck@gmail.com> - 2015-10-30 19:10 +0100

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