[DRBD-user] pingAck failed - help to avoid it?

matteo filippetto matteo.filippetto at gmail.com
Tue Mar 17 14:10:25 CET 2009

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


2009/3/16 Lars Ellenberg <lars.ellenberg at linbit.com>:
> On Mon, Mar 16, 2009 at 01:48:12AM +0200, Theophanis Kontogiannis wrote:
>> Hello all
>>
>>
>>
>> I have a two nodes cluster on Centos 5.2, kernel
>> 2.6.18-92.1.22.el5.centos.plus, drbd-8.3.0-3 and
>> drbd-km-2.6.18_92.1.22.el5.centos.plus-8.3.0-3 compiled and installed as rpm
>> by myself.
>>
>>
>>
>> Though I do have two GigabitEth NICs connected back-to-back for DRBD and
>> clustering, from time to time, especially during heavy traffic on the public
>> GigEth interfaces of the cluster nodes, I get the following:
>>
>>
>>
>> drbd0: PingAck did not arrive in time.
>
>> drbd0: peer( Primary -> Unknown ) conn( Connected -> NetworkFailure ) pdsk(
>> UpToDate -> DUnknown ) susp( 0 -> 1 )
>> drbd0: asender terminated
>> drbd0: Terminating asender thread
>> drbd0: short read expecting header on sock: r=-512
>> drbd0: Creating new current UUID
>> drbd0: Connection closed
>> drbd0: helper command: /sbin/drbdadm fence-peer minor-0
>> drbd0: helper command: /sbin/drbdadm fence-peer minor-0 exit code 2 (0x200)
>> drbd0: fence-peer helper broken, returned 2
>
> hm?? what is that about?
> what did you configure for fencing?
> why does it return 2?
>
>
>> Fencing is working since the node that failed to send the PinkAck gets
>> fenced (and rebooted).
>
> hm... see above.
>
>> However, any ideas why this is happening since there is private link for
>> DRBD?
>
>> Also I fail to identify on the man pages and the on-line tutorial/manual,
>> the parameters that will make me fine tune this behavior, so I would also
>> appreciate some help on that too.
>
> increase the ping-timeout in drbd.conf.
>
> --
> : Lars Ellenberg
> : LINBIT | Your Way to High Availability
> : DRBD/HA support and consulting http://www.linbit.com
>
> DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
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Hi,

how much I can increase ping-timeout options?

Thank you

-- 
Matteo Filippetto



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