can anyone give me a tip or two about this?
 
Mit freundlichen Grüßen / with kind regards

Torsten Schmidt
 
 
________________________________

Von: [email protected] 
[mailto:[email protected]] Im Auftrag von Schmidt, Torsten
Gesendet: Mittwoch, 21. Oktober 2009 13:13
An: [email protected]
Betreff: [DRBD-user] Questions regarding offsite disaster/recovery (fromstacked 
drbd device)



Hi list, 

i've successfully implemented a three-node setup with an offsite node via drbd 
stacked-device as explained in the users-guide

( http://www.drbd.org/users-guide/s-pacemaker-stacked-resources.html 
<http://www.drbd.org/users-guide/s-pacemaker-stacked-resources.html>  ) 

the offsite drbd-device status is always 'secondary' because it has to stay in 
sync with the 'primary' (stacked) device managed by pacemaker crm.

afaik 'secondary' devices cannot be mounted/accessed. 

so, how can i access the offsite data, assumed all nodes in my ha-cluster 
failed? 

how to handle the different states, the offsite-device can be in and how to do 
a recovery from it? 
i can think these: 
  -  cs:WFConnection   ro:Secondary/Unknown ds:UpToDate/DUnknown 
  -  cs:WFConnection/Unknown   ro:Secondary/Primary ds:Outdated/DUnknown 
  -  cs:WFConnection/Unknown   ro:Secondary/Primary ds:Consistent/DUnknown 
  -  cs:WFConnection/Unknown   ro:Secondary/Primary ds:Inconsistent/DUnknown 


is there a possibility to make the data on the offsite node permanently 
available (read only)? 
  e.g. so i can always 'clone' my production data to my test-environment from 
the state: 
    cs:Connected   ro:Secondary/Primary ds:UpToDate/UpToDate 


Mit freundlichen Grüßen / with kind regards 

Torsten Schmidt 

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