[DRBD-user] DRBD and KVM for a HA-Cluster ?

Lentes, Bernd bernd.lentes at helmholtz-muenchen.de
Mon Jan 24 14:01:38 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.


> Hi,
> 
> Thanks for your patience.
> I think we have a missunderstanding.
> My scenario is like that:
> I have three different vm's, each one offering a different 
> service. I'd like to have each vm high available. I have only 
> two nodes, each one with a hardware raid 5:
> 
> [ Node 1 ]     [ Node 2 ]
>      |             |
> [HW RAID5]     [HW RAID5]
>      |             |
> [Partition]    [Partition]
>      |             |
> [ PV1    ]     [ PV1    ]
>      |             |
> [ VG1    ]     [ VG1    ]
>      |             |
> [ LV1    ]     [ LV1    ]
>      |             |
> [ DRBD1  ]-----[ DRBD1  ]
>      |             |
> [ VM1A   ]     [ VM1B   ]   
> 
> VM1A and VM1B are identical VM's, offering the same service !
> 
> 
> Second VM (second service):
> 
> [ Node 1 ]     [ Node 2 ]
>      |             |
> [HW RAID5]     [HW RAID5]
>      |             |
> [Partition]    [Partition]
>      |             |
> [ PV1    ]     [ PV1    ]
>      |             |
> [ VG1    ]     [ VG1    ]
>      |             |
> [ LV2    ]     [ LV2    ]
>      |             |
> [ DRBD2  ]-----[ DRBD2  ]
>      |             |
> [ VM2A   ]     [ VM2B   ]   
> 
> VM2A and VM2B are identical VM's, offering another service.  
> And so on for further vm's (further services) ...
> 

Hi,

now one more question:

Do i need cLVM for this scenario ?


Bernd


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