From: Alex Williamson <alex.williamson@redhat.com>
To: Or Gerlitz <gerlitz.or@gmail.com>
Cc: Lan Tianyu <tianyu.lan@intel.com>,
"Michael S. Tsirkin <mst@redhat.com> (mst@redhat.com)"
<mst@redhat.com>, Bjorn Helgaas <bhelgaas@google.com>,
carolyn.wyborny@intel.com, "Skidmore,
Donald C" <donald.c.skidmore@intel.com>,
eddie.dong@intel.com, nrupal.jani@intel.com,
yang.z.zhang@intel.com, Alexander Graf <agraf@suse.de>,
kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
qemu-devel@nongnu.org, emil.s.tantilov@intel.com,
intel-wired-lan@lists.osuosl.org,
Jeff Kirsher <jeffrey.t.kirsher@intel.com>,
Jesse Brandeburg <jesse.brandeburg@intel.com>,
john.ronciak@intel.com,
Linux Kernel <linux-kernel@vger.kernel.org>,
linux-pci@vger.kernel.org, matthew.vick@intel.com,
Mitch Williams <mitch.a.williams@intel.com>,
Linux Netdev List <netdev@vger.kernel.org>,
Shannon Nelson <shannon.nelson@intel.com>
Subject: Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC
Date: Thu, 22 Oct 2015 10:17:30 -0600 [thread overview]
Message-ID: <1445530650.5050.19.camel@redhat.com> (raw)
In-Reply-To: <CAJ3xEMhgzfbGf-3Z7GJGxg5VqbWGyKqoTt6c4C54sDNehdXVMg@mail.gmail.com>
On Thu, 2015-10-22 at 18:58 +0300, Or Gerlitz wrote:
> On Wed, Oct 21, 2015 at 10:20 PM, Alex Williamson
> <alex.williamson@redhat.com> wrote:
>
> > This is why the typical VF agnostic approach here is to using bonding
> > and fail over to a emulated device during migration, so performance
> > suffers, but downtime is something acceptable.
>
> bonding in the VM isn't a zero touch solution, right? is it really acceptable?
The bonding solution requires configuring the bond in the guest and
doing the hot unplug/re-plug around migration. It's zero touch in that
it works on current code with any PF/VF, but it's certainly not zero
configuration in the guest. Is what acceptable? The configuration?
The performance? The downtime? I don't think we can hope to improve on
the downtime of an emulated device, but obviously the configuration and
performance are not always acceptable or we wouldn't be seeing so many
people working on migration of assigned devices. Thanks,
Alex
next prev parent reply other threads:[~2015-10-22 16:17 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-21 16:37 [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Lan Tianyu
2015-10-21 16:37 ` [RFC Patch 01/12] PCI: Add virtfn_index for struct pci_device Lan Tianyu
2015-10-21 18:07 ` Alexander Duyck
2015-10-24 14:46 ` Lan, Tianyu
2015-10-21 16:37 ` [RFC Patch 02/12] IXGBE: Add new mail box event to restore VF status in the PF driver Lan Tianyu
2015-10-21 20:34 ` Alexander Duyck
2015-10-21 16:37 ` [RFC Patch 03/12] IXGBE: Add sysfs interface for Qemu to migrate " Lan Tianyu
2015-10-21 20:45 ` Alexander Duyck
2015-10-25 7:21 ` Lan, Tianyu
2015-10-21 16:37 ` [RFC Patch 04/12] IXGBE: Add ixgbe_ping_vf() to notify a specified VF via mailbox msg Lan Tianyu
2015-10-21 16:37 ` [RFC Patch 05/12] IXGBE: Add new sysfs interface of "notify_vf" Lan Tianyu
2015-10-21 20:52 ` Alexander Duyck
2015-10-22 12:51 ` [Qemu-devel] " Michael S. Tsirkin
2015-10-24 15:43 ` Lan, Tianyu
2015-10-25 6:03 ` Alexander Duyck
2015-10-25 6:45 ` Lan, Tianyu
2015-10-21 16:37 ` [RFC Patch 06/12] IXGBEVF: Add self emulation layer Lan Tianyu
2015-10-21 20:58 ` Alexander Duyck
2015-10-22 12:50 ` [Qemu-devel] " Michael S. Tsirkin
2015-10-22 15:50 ` Alexander Duyck
2015-10-21 16:37 ` [RFC Patch 07/12] IXGBEVF: Add new mail box event for migration Lan Tianyu
2015-10-21 16:37 ` [RFC Patch 08/12] IXGBEVF: Rework code of finding the end transmit desc of package Lan Tianyu
2015-10-21 21:14 ` Alexander Duyck
2015-10-24 16:12 ` Lan, Tianyu
2015-10-22 12:58 ` Michael S. Tsirkin
2015-10-24 16:08 ` Lan, Tianyu
2015-10-21 16:37 ` [RFC Patch 09/12] IXGBEVF: Add live migration support for VF driver Lan Tianyu
2015-10-21 21:48 ` Alexander Duyck
2015-10-22 12:46 ` Michael S. Tsirkin
2015-10-21 16:37 ` [RFC Patch 10/12] IXGBEVF: Add lock to protect tx/rx ring operation Lan Tianyu
2015-10-21 21:55 ` Alexander Duyck
2015-10-22 12:40 ` Michael S. Tsirkin
2015-10-21 16:37 ` [RFC Patch 11/12] IXGBEVF: Migrate VF statistic data Lan Tianyu
2015-10-22 12:36 ` Michael S. Tsirkin
2015-10-21 16:37 ` [RFC Patch 12/12] IXGBEVF: Track dma dirty pages Lan Tianyu
2015-10-22 12:30 ` Michael S. Tsirkin
2015-10-21 18:45 ` [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV NIC Or Gerlitz
2015-10-21 19:20 ` Alex Williamson
2015-10-21 23:26 ` Alexander Duyck
2015-10-22 12:32 ` [Qemu-devel] " Michael S. Tsirkin
2015-10-22 13:01 ` Alex Williamson
2015-10-22 13:06 ` Michael S. Tsirkin
2015-10-22 15:58 ` Or Gerlitz
2015-10-22 16:17 ` Alex Williamson [this message]
2015-10-22 12:55 ` [Qemu-devel] " Michael S. Tsirkin
2015-10-23 18:36 ` Alexander Duyck
2015-10-23 19:05 ` Alex Williamson
2015-10-23 20:01 ` Alexander Duyck
2015-10-26 5:36 ` Lan Tianyu
2015-10-26 15:03 ` Alexander Duyck
2015-10-29 6:12 ` Lan Tianyu
2015-10-29 6:58 ` Alexander Duyck
2015-10-29 8:33 ` Lan Tianyu
2015-10-29 16:17 ` Alexander Duyck
2015-10-30 2:41 ` Lan Tianyu
2015-10-30 18:04 ` Alexander Duyck
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