From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
To: Pavel Fedin <p.fedin@samsung.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 0/4 for 2.3] vhost-user live migration support
Date: Fri, 11 Dec 2015 17:49:34 +0800 [thread overview]
Message-ID: <20151211094934.GX29571@yliu-dev.sh.intel.com> (raw)
In-Reply-To: <000001d133ed$b2446eb0$16cd4c10$@samsung.com>
On Fri, Dec 11, 2015 at 11:26:55AM +0300, Pavel Fedin wrote:
> Hello!
>
> I am currently testing this patchset with qemu and have problems.
Hi,
Thanks for testing!
>
> The guest migrates correctly, but after the migration it cries in the log:
>
> Vhost user backend fails to broadcast fake RARP
Yes, because I have enabled it yet on DPDK side, and I was intended to
try it in the v2 patchset, which is likely to be sent out next week.
--yliu
>
> and pinging the (new) host doesn't work. When i migrate it back to the old host, the network resumes working.
>
> I have analyzed the code, and this problem happens because we support neither VHOST_USER_PROTOCOL_F_RARP, nor
> VIRTIO_NET_F_GUEST_ANNOUNCE. Since the latter seems to be related only to guest, i simply enabled it in qemu by force, and after
> this the network doesn't work at all.
> Can anybody help me and explain how the thing works? I expected that gratuitous ARP packets are harmless, but they seem to break
> things somehow. And what was used for testing the implementation?
>
> Kind regards,
> Pavel Fedin
> Expert Engineer
> Samsung Electronics Research center Russia
>
>
next prev parent reply other threads:[~2015-12-11 9:49 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 [this message]
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
-- 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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