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From: "Michael S. Tsirkin" <mst@redhat.com>
To: Liran Alon <liran.alon@oracle.com>
Cc: vuhuong@mellanox.com, Jiri Pirko <jiri@resnulli.us>,
	Jakub Kicinski <kubakici@wp.pl>,
	Sridhar Samudrala <sridhar.samudrala@intel.com>,
	Alexander Duyck <alexander.duyck@gmail.com>,
	virtualization@lists.linux-foundation.org,
	Netdev <netdev@vger.kernel.org>,
	Si-Wei Liu <si-wei.liu@oracle.com>,
	boris.ostrovsky@oracle.com, David Miller <davem@davemloft.net>,
	ogerlitz@mellanox.com
Subject: Re: [summary] virtio network device failover writeup
Date: Thu, 21 Mar 2019 13:12:23 -0400	[thread overview]
Message-ID: <20190321131006-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <BC327EF2-22C7-402B-9078-93891A4774D6@oracle.com>

On Thu, Mar 21, 2019 at 06:31:35PM +0200, Liran Alon wrote:
> 
> 
> > On 21 Mar 2019, at 17:50, Michael S. Tsirkin <mst@redhat.com> wrote:
> > 
> > On Thu, Mar 21, 2019 at 08:45:17AM -0700, Stephen Hemminger wrote:
> >> On Thu, 21 Mar 2019 15:04:37 +0200
> >> Liran Alon <liran.alon@oracle.com> wrote:
> >> 
> >>>> 
> >>>> OK. Now what happens if master is moved to another namespace? Do we need
> >>>> to move the slaves too?  
> >>> 
> >>> No. Why would we move the slaves? The whole point is to make most customer ignore the net-failover slaves and remain them “hidden” in their dedicated netns.
> >>> We won’t prevent customer from explicitly moving the net-failover slaves out of this netns, but we will not move them out of there automatically.
> >> 
> >> 
> >> The 2-device netvsc already handles case where master changes namespace.
> > 
> > Is it by moving slave with it?
> 
> See c0a41b887ce6 ("hv_netvsc: move VF to same namespace as netvsc device”).
> It seems that when NetVSC master netdev changes netns, the VF is moved to the same netns by the NetVSC driver.
> Kinda the opposite than what we are suggesting here to make sure that the net-failover master netdev is on a separate
> netns than it’s slaves...
> 
> -Liran
> 
> > 
> > -- 
> > MST

Not exactly opposite I'd say.

If failover is in host ns, slaves in /primary and /standby, then moving
failover to /container should move slaves to /container/primary and
/container/standby.


-- 
MST
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  parent reply	other threads:[~2019-03-21 17:12 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20190317095052-mutt-send-email-mst@kernel.org>
2019-03-19 12:38 ` [summary] virtio network device failover writeup Liran Alon
     [not found] ` <54E7C3AF-C3C5-4AF2-86C9-AA50389F855F@oracle.com>
2019-03-19 15:46   ` Stephen Hemminger
2019-03-19 21:06   ` Michael S. Tsirkin
     [not found]   ` <20190319084647.727f8dcf@shemminger-XPS-13-9360>
2019-03-19 21:19     ` Michael S. Tsirkin
     [not found]     ` <20190319171638-mutt-send-email-mst@kernel.org>
2019-03-19 23:25       ` Liran Alon
     [not found]       ` <79F5D7C0-BBAA-4F78-9039-27A444970002@oracle.com>
2019-03-20 10:25         ` Michael S. Tsirkin
     [not found]         ` <20190320061632-mutt-send-email-mst@kernel.org>
2019-03-20 12:23           ` Liran Alon
     [not found]           ` <E0606AE7-7DE2-47C7-B64A-8161FD814277@oracle.com>
2019-03-20 14:09             ` Michael S. Tsirkin
     [not found]             ` <20190320100747-mutt-send-email-mst@kernel.org>
2019-03-20 21:43               ` Liran Alon
     [not found]               ` <36772E22-7A8F-4C42-A731-398E3204B418@oracle.com>
2019-03-20 22:10                 ` Michael S. Tsirkin
     [not found]                 ` <20190320180641-mutt-send-email-mst@kernel.org>
2019-03-20 22:19                   ` Liran Alon
     [not found]                   ` <B3FB267A-2DC0-4A4C-8193-7F420BC9791B@oracle.com>
2019-03-21  8:58                     ` Michael S. Tsirkin
     [not found]                     ` <20190321044920-mutt-send-email-mst@kernel.org>
2019-03-21 10:07                       ` Liran Alon
     [not found]                       ` <CD40EA09-242D-41E1-8BD2-4FF4BB4D1986@oracle.com>
2019-03-21 12:37                         ` Michael S. Tsirkin
     [not found]                         ` <20190321082532-mutt-send-email-mst@kernel.org>
2019-03-21 12:47                           ` Liran Alon
     [not found]                           ` <BB2B938F-D2F0-47F8-B651-70EC8A19BC6B@oracle.com>
2019-03-21 12:57                             ` Michael S. Tsirkin
     [not found]                             ` <20190321085159-mutt-send-email-mst@kernel.org>
2019-03-21 13:04                               ` Liran Alon
2019-03-21 15:44                               ` Stephen Hemminger
     [not found]                               ` <2939FB15-720A-4C9E-92B7-2DBA139DDE0F@oracle.com>
2019-03-21 13:12                                 ` Michael S. Tsirkin
     [not found]                                 ` <20190321090619-mutt-send-email-mst@kernel.org>
2019-03-21 13:24                                   ` Liran Alon
     [not found]                                   ` <1B52153B-B968-4E5B-8959-E7E83CE7FEAF@oracle.com>
2019-03-21 13:51                                     ` Michael S. Tsirkin
     [not found]                                     ` <20190321094217-mutt-send-email-mst@kernel.org>
2019-03-21 14:16                                       ` Liran Alon
     [not found]                                       ` <FF25F82E-F6FF-424E-88BA-A3D74EE505DE@oracle.com>
2019-03-21 15:15                                         ` Michael S. Tsirkin
2019-03-21 15:45                                 ` Stephen Hemminger
     [not found]                                 ` <20190321084517.773a65fa@shemminger-XPS-13-9360>
2019-03-21 15:50                                   ` Michael S. Tsirkin
     [not found]                                   ` <20190321114557-mutt-send-email-mst@kernel.org>
2019-03-21 16:31                                     ` Liran Alon
     [not found]                                     ` <BC327EF2-22C7-402B-9078-93891A4774D6@oracle.com>
2019-03-21 17:12                                       ` Michael S. Tsirkin [this message]
2019-03-21 17:15                                         ` Liran Alon
     [not found]   ` <20190319170445-mutt-send-email-mst@kernel.org>
2019-03-19 23:05     ` Liran Alon
2019-03-17 13:55 Michael S. Tsirkin

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