Re: netconsole breaks netpoll on bridge

[Stefan Priebe - Profihost AG]

> Am 16.06.2014 um 20:05 schrieb Cong Wang <cwang@xxxxxxxxxxxxxxxx>:
> 
> On Mon, Jun 16, 2014 at 5:51 AM, Stefan Priebe - Profihost AG
> <s.priebe@xxxxxxxxxxxx> 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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/