netdev - Re: [Patch V2] bonding: fix netpoll in active-backup mode

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Message-ID: <4D7773E3.5050708@redhat.com>
Date:	Wed, 09 Mar 2011 20:34:43 +0800
From:	Cong Wang <amwang@...hat.com>
To:	Andy Gospodarek <andy@...yhouse.net>
CC:	linux-kernel@...r.kernel.org, Neil Horman <nhorman@...driver.com>,
	Jay Vosburgh <fubar@...ibm.com>, netdev@...r.kernel.org
Subject: Re: [Patch V2] bonding: fix netpoll in active-backup mode

于 2011年03月09日 05:24, Andy Gospodarek 写道:
> On Tue, Mar 08, 2011 at 05:58:56PM +0800, Amerigo Wang wrote:
>> V2: avoid calling slave_diable_netpoll() with write_lock_bh() held.
>>
>> netconsole doesn't work in active-backup mode, because we don't do anything
>> for nic failover in active-backup mode. We should disable netpoll on the
>> failing slave when it is detected down and enable netpoll when it becomes
>> the active slave.
>>
>> Tested by ifdown the current active slave and ifup it again for several times,
>> netconsole works well.
>>
>> Signed-off-by: WANG Cong<amwang@...hat.com>
>> Cc: Neil Horman<nhorman@...driver.com>
>>
>
> It seems like you are going to a lot of trouble to fix a bug where
> netpoll will not be setup on any interface that is down when enslaved.
> That seems to be the only path that would not have slave->np setup
> properly at enslavement.
>
> Did you ever try just this?

That was my first thought, but I was over-worried about the failing slave.
This way should work too. Mind to send it as a normal patch? :)

Thanks!

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