Hi Robert,

greetings to Leoben :) I hope you're doing well.

The drbd device is in sync again. Something just went wrong on the initial 
deployment.  We checked the raid controller and all the disks - nothing is 
faulty. 
We will have an eye on it.

Cheers.

Stefan Bauer

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Von: [email protected] 
[mailto:[email protected]] Im Auftrag von 
[email protected]
Gesendet: Mittwoch, 22. Januar 2014 09:52
An: [email protected]
Betreff: [DRBD-user] Antwort: Re: proto c - corrupt files - directories missing

Hi!
Yes, that should do the trick. However, ot be on the safe side and also check 
if the culperit might be the RAID controller underneath it aoud make sense to 
trigger a full resync by disconnecting on the Secondary (drbdadm disconnect 
resourcename), invalidating (drbdadm invalidate resourcename) on the secondary 
and then reconnecting (drbdadm connect resourcename). After the ensuing resync 
is finished run another verify. If you get OOS blocks again, chances are you 
are writing nonsense to the disk.
IIRC DRBD checks the integrity of the transmission then data intrgirity 
checking is active, but not the actual blocks on disk. there it relies on the 
underlying layers of the storage subsystem to actually write the data as it was 
transmitted. A cronjob runing a verify once every while and another one 
checking for any OOS blocks (parsing /proc/drbd) and triggering a 
disconnect/reconnect if any are found, might be a good idea. Maybe someone from 
LINBIT can comment on this and come up with confirmation or a better solution. 
Ideally OOS blocks would be fixed automatically with the option todisable this 
function using the config.
Mit freundlichen Grüßen / Best Regards

Robert Köppl

Customer Support & Projects
Teamleader IT Support

KNAPP Systemintegration GmbH
Waltenbachstraße 9
8700 Leoben, Austria
Phone: +43 3842 805-322
Fax: +43 3842 82930-500
[email protected]
www.KNAPP.com

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             Felix Frank                                                   
             <[email protected]>                                               
             Gesendet von:                                              An 
             drbd-user-bounces           Christian Hammers                 
             @lists.linbit.com           <[email protected]>,         
                                                                     Kopie 
                                         drbd-user                         
             07.01.2014 17:11            <[email protected]>      
                                                                     Thema 
                                         Re: [DRBD-user] proto c - corrupt 
                                         files - directories missing       
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Hi,

wouldn't a simple disconnect/reconnect do the trick?

After the handshake, drbd will want to sync all blocks with non-zero bits in 
the bitmap.

HTH,
Felix

On 01/07/2014 04:51 PM, Christian Hammers wrote:
> Try "drbdadm invalidate clusterdb_res" on your *secondary* node.
> This will start a complete resync from the primary node and copies 
> every block whose checksum mismatches. Can take some hours, though.
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