[DRBD-user] Bad Barrier Ack with 2.6.37

Lars Ellenberg lars.ellenberg at linbit.com
Fri Mar 25 10:58:11 CET 2011

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


On Fri, Mar 25, 2011 at 09:07:32AM +0000, Holger Kiehl wrote:
> Hello,
> 
> On Mon, 10 Jan 2011, Holger Kiehl wrote:
> 
> >Hello,
> >
> >upgrading kernel on secondary from 2.6.36.2 to 2.6.37 gives me the
> >following error on primary:

Which means you are using the in-kernel DRBD module?
Or the out-of-tree drbd source code,
and just upgraded the kernel anyways?

Does this occur in "mixed version" mode only, different drbd and/or
kernel versions on both nodes, or with both nodes on the identical
version(s)?

>   Mar 25 08:53:00 obelix kernel: block drbd0: BAD! BarrierAck #1224296926 received, expected #1224296925!
>   Mar 25 08:54:20 obelix kernel: block drbd0: BAD! BarrierAck #1861867747 received, expected #1861867746!
>   Mar 25 08:54:35 obelix kernel: block drbd0: BAD! BarrierAck #4040326970 received, expected #4040326969!
>   Mar 25 08:56:21 obelix kernel: block drbd0: BAD! BarrierAck #1235958129 received, expected #1235958128!
>   Mar 25 08:57:31 obelix kernel: block drbd0: BAD! BarrierAck #4096191267 received, expected #4096191266!
>   Mar 25 08:58:51 obelix kernel: block drbd0: BAD! BarrierAck #1578973016 received, expected #1578973015!
>   Mar 25 08:59:26 obelix kernel: block drbd0: BAD! BarrierAck #4131468500 received, expected #4131468499!
>   Mar 25 09:00:08 obelix kernel: block drbd0: BAD! BarrierAck #4013314144 received, expected #4013314143!
>   Mar 25 09:01:19 obelix kernel: block drbd0: BAD! BarrierAck #2538005992 received, expected #2538005991!
> 
> Kernel 2.6.36.x is working without this problem. Any idea what is causing
> this? What other information is required to solve this issue?

-- 
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

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