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Message-Id: <6B8712E6-8012-42C3-9D98-0EBD943F2894@profihost.ag>
Date: Mon, 16 Jun 2014 20:41:38 +0200
From: Stefan Priebe - Profihost AG <s.priebe@...fihost.ag>
To: Cong Wang <cwang@...pensource.com>
Cc: Stephen Hemminger <stephen@...workplumber.org>,
David Miller <davem@...emloft.net>,
"bridge@...ts.linux-foundation.org"
<bridge@...ts.linux-foundation.org>,
Linux Netdev List <netdev@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: netconsole breaks netpoll on bridge
> Am 16.06.2014 um 20:05 schrieb Cong Wang <cwang@...pensource.com>:
>
> On Mon, Jun 16, 2014 at 5:51 AM, Stefan Priebe - Profihost AG
> <s.priebe@...fihost.ag> wrote:
>> Hi,
>>
>> i'm using a vanilla 3.10.43 kernel and netconsole on top of a bridge.
>>
>> netconsole is used with vmbr0 (bridge) which is on top of bond0.
>>
>> If i want to add another bridge to vmbr0 is fails as long as netconsole
>> is in use.
>>
>> # brctl addif vmbr0 fwpr2004p0
>> can't add fwpr2004p0 to bridge vmbr0: Unknown error 524
>>
>> Kernel output:
>> netpoll: (null): fwpr2004p0 doesn't support polling, aborting
>>
>> If i do rmmod netconsole - everything is working fine again.
>
> This is expected, you can't add an interface which doesn't support
> netpoll to a bridge which is running netpoll.
Thanks, so i can't use netconsole at a bridge used for vms?
>
> You should stop netpoll before adding it.
How to do that? What disadvantage does this have?
Thanks!
Stefan
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