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From: Peter Xu <peterx@redhat.com>
To: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 0/4 for 2.3] vhost-user live migration support
Date: Tue, 15 Dec 2015 17:42:54 +0800	[thread overview]
Message-ID: <20151215094254.GC32243@pxdev.xzpeter.org> (raw)
In-Reply-To: <20151215082324.GG29571@yliu-dev.sh.intel.com>

On Tue, Dec 15, 2015 at 04:23:24PM +0800, Yuanhan Liu wrote:
> On Mon, Dec 14, 2015 at 11:58:42AM +0800, Peter Xu wrote:
> > If ping to guest from outside, when the migration finishes on the
> > target side of qemu, qemu_self_announce() will be called.
> 
> It's supposed to see some ARP requests if I run tcpdump against
> with the ovs bridge, right? However, in fact, I saw nothing from
> tcpdump on the target host when the migration is done.
> 
> I mean I do find that qemu_annouce_self composes an ARP
> broadcoast request, but it seems that I didn't catch it on
> the target host.
> 
> Something wrong, or someting I missed?

AFAIK, it should be RARP rather than ARP request. However, sorry
that I do not know the reason for its lossing either.

Btw, I did a very basic live migration using v1 patchset locally
today (one host, two QEMU instances attach to the same vhost-user
socket), it's working too on my host. :)

Thanks.
Peter

> 
> 	--yliu
> 
> > Although
> > we might see a warning like "Vhost user backend fails to broadcast
> > fake RARP" (notify is done by hacking vhost_user_receive(), even if
> > notify fails, things will still move on), QEMU should still send a
> > RARP onto the link.
> > 
> > Not sure whether I missed anything.
> > 
> > Thanks.
> > Peter

  parent reply	other threads:[~2015-12-15  9:43 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-11  8:26 Pavel Fedin
2015-12-11  9:49 ` Yuanhan Liu
2015-12-11 10:22   ` Pavel Fedin
2015-12-14  3:58     ` Peter Xu
2015-12-14  7:30       ` Pavel Fedin
2015-12-14  9:04         ` Peter Xu
2015-12-14  9:46           ` Pavel Fedin
2015-12-14 10:09             ` Peter Xu
2015-12-14 12:09             ` Yuanhan Liu
2015-12-14 13:00               ` Peter Xu
2015-12-14 13:21                 ` Yuanhan Liu
2015-12-14 13:28                   ` Peter Xu
2015-12-14 13:51                     ` Yuanhan Liu
2015-12-14 14:54                   ` Pavel Fedin
2015-12-15  8:23       ` Yuanhan Liu
2015-12-15  8:45         ` Pavel Fedin
2015-12-15  8:56           ` Yuanhan Liu
2015-12-15  9:04             ` Pavel Fedin
2015-12-15 10:05           ` Peter Xu
2015-12-15 11:43             ` Thibaut Collet
2015-12-15 11:47               ` Thibaut Collet
2015-12-15 12:24                 ` Pavel Fedin
2015-12-15 13:36                   ` Yuanhan Liu
2015-12-15 13:48                     ` Pavel Fedin
2015-12-15 13:59                       ` Yuanhan Liu
2015-12-15 14:58                         ` Pavel Fedin
2015-12-16  7:28                           ` Yuanhan Liu
2015-12-16 11:57                             ` Pavel Fedin
2015-12-16 12:08                               ` Yuanhan Liu
2015-12-16 12:43                                 ` Pavel Fedin
2015-12-16 13:00                                   ` Yuanhan Liu
2015-12-15 13:18                 ` Yuanhan Liu
2015-12-15 15:07                   ` Thibaut Collet
2015-12-15 15:36                     ` Pavel Fedin
2015-12-16  2:38                     ` Peter Xu
2015-12-16  2:50                       ` Yuanhan Liu
2015-12-16  7:05                       ` Pavel Fedin
2015-12-15  9:42         ` Peter Xu [this message]
  -- strict thread matches above, loose matches on Subject: below --
2015-12-02  3:43 Yuanhan Liu
2015-12-02 14:10 ` Victor Kaplansky
2015-12-02 14:33   ` Yuanhan Liu
2015-12-09  3:41 ` Xie, Huawei

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