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Re: [Qemu-devel] [RFC Patch 00/12] IXGBE: Add live migration support for
From: |
Or Gerlitz |
Subject: |
Re: [Qemu-devel] [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC |
Date: |
Wed, 21 Oct 2015 21:45:42 +0300 |
On Wed, Oct 21, 2015 at 7:37 PM, Lan Tianyu <address@hidden> 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.
- [Qemu-devel] [RFC Patch 03/12] IXGBE: Add sysfs interface for Qemu to migrate VF status in the PF driver, (continued)
- [Qemu-devel] [RFC Patch 03/12] IXGBE: Add sysfs interface for Qemu to migrate VF status in the PF driver, Lan Tianyu, 2015/10/21
- [Qemu-devel] [RFC Patch 02/12] IXGBE: Add new mail box event to restore VF status in the PF driver, Lan Tianyu, 2015/10/21
- [Qemu-devel] [RFC Patch 08/12] IXGBEVF: Rework code of finding the end transmit desc of package, Lan Tianyu, 2015/10/21
- [Qemu-devel] [RFC Patch 09/12] IXGBEVF: Add live migration support for VF driver, Lan Tianyu, 2015/10/21
- Re: [Qemu-devel] [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC,
Or Gerlitz <=
- Re: [Qemu-devel] [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC, Or Gerlitz, 2015/10/22
- Re: [Qemu-devel] [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC, Alex Williamson, 2015/10/22
[Qemu-devel] [RFC Patch 12/12] IXGBEVF: Track dma dirty pages, Lan Tianyu, 2015/10/21
[Qemu-devel] [RFC Patch 07/12] IXGBEVF: Add new mail box event for migration, Lan Tianyu, 2015/10/21