[DRBD-user] secondary DRBD node shows UpToDate but is not

Hayley Swimelar hayley at linbit.com
Thu Dec 22 21:05:41 CET 2016

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


Hi Bart,

On 12/21/2016 05:55 AM, Bart Coninckx wrote:
> Hi all,
>
>
>
> since a couple of years we have a 2 node DRBD cluster on CentOS 6.5 and
> DRBD (version: 8.4.5 (api:1/proto:86-101)) installed from source. We
> noticed that all DRBD resources show "UpToDate" on the secondary node,
> but if we restart the service, one or more resources start syncing
> again, indicating there seem to be differences in between the resources.
> This is of course not desirable.
>

How large are the resyncs? If you restarted the drbd service while 
writes were coming in on the other node, a small resync (depending on 
how many blocks were touched while the service was not running) would be 
expected here.

Best,
Hayley

> Is this a known issue with this version? If needed we will upgrade the
> cluster, but since a complete virtualization setup is running on top of
> it, this is not evident, hence the reason why I inquire first about
> possible known issues.
>
>
>
> Cheers,
>
>
>
>
>
> Met Vriendelijke Groet,
> Kind Regards,
> Salutations,
>
>
> Bart Coninckx
> Bits 'n Tricks BVBA
>
> Hoge Mierdse Heide 182
> 2360 Oud-Turnhout
> tel. +32 14 480 820
>
> gsm +32 478 88 33 08
> info at bitsandtricks.com
> http://www.bitsandtricks.com
> BTW: BE0817.401.875
>
> Crelan BE46 8601 0806 3436
>
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>
>
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-- 
Hayley Swimelar – Software Developer
+1 503 573-1262 x212
hayley at linbit.com

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