From: Keir Fraser <keir@xensource.com>
To: "Graham, Simon" <Simon.Graham@stratus.com>,
xen-devel@lists.xensource.com
Subject: Re: arp during live migration
Date: Wed, 07 Mar 2007 16:02:02 +0000 [thread overview]
Message-ID: <C214927A.AC93%keir@xensource.com> (raw)
In-Reply-To: <342BAC0A5467384983B586A6B0B3767104DC4135@EXNA.corp.stratus.com>
On 6/3/07 22:59, "Graham, Simon" <Simon.Graham@stratus.com> wrote:
> All of this leads to a ~1s delay setting up the network path plus the
> gratuitous ARP is dropped so there can be a MUCH larger network
> blackout. If you are trying to get sub-second blackout on migration this
> is a big problem!
>
> It seems to me that the right thing to do here is to have the link up on
> the VIF in advance of the domain resuming on the target but I'm guessing
> that this would cause netback to have conniptions...
Changeset 14280 in xen-unstable fixes this by no longer using the
netif_carrier flag. The patch will probably backport very straightforwardly
onto older (or newer) 2.6 Linux kernels.
-- Keir
next prev parent reply other threads:[~2007-03-07 16:02 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-02 22:22 arp during live migration Graham, Simon
2007-03-03 16:21 ` Jacob Gorm Hansen
2007-03-03 17:10 ` Graham, Simon
2007-03-05 15:40 ` Cristian Zamfir
[not found] ` <1172938895.14470.25.ca mel@localhost.localdomain>
2007-03-05 23:47 ` Graham, Simon
2007-03-06 22:59 ` Graham, Simon
2007-03-07 8:30 ` Keir Fraser
2007-03-07 16:02 ` Keir Fraser [this message]
2007-03-07 22:25 ` Graham, Simon
2007-03-08 7:53 ` Keir Fraser
2008-01-30 11:17 ` Hans-Christian Armingeon
-- strict thread matches above, loose matches on Subject: below --
2007-03-02 20:54 Cristian Zamfir
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