[sheepdog-users] Whether there are other ways to make other nodes taking over the virtual machine when one node is lost.

[Liu Yuan]

On 05/28/2013 04:17 PM, xiao li wrote:
>       I start a Virtual Machine by the command 'kvm  -drive
> file=sheepdog:10.2.7.12:7000:volume.... ', and my VM will die when the
> node (10.2.7.12) is switched off. 
>      There are the other two copies in another two nodes,
> why do not the other nodes  take over the VM? 
>    Whether there are other ways to make other nodes taking over the
> virtual machine when one node is lost.
>     Thanks for any help.
> 
>     My nodes are as follows.
> #collie node list
> M   Id   Host:Port         V-Nodes       Zone
> -    0   10.2.7.11:7000 <http://10.2.7.11:7000/>         64  185008650
> -    1   10.2.7.12:7000 <http://10.2.7.12:7000/>         64  201785866
> -    2   10.2.7.13:7000 <http://10.2.7.13:7000/>         64  218563082
> -    3   10.2.7.14:7000 <http://10.2.7.14:7000/>         64  235340298
> -    4   10.2.7.15:7000 <http://10.2.7.15:7000/>         63  252117514
> -    5   10.2.7.16:7000 <http://10.2.7.16:7000/>         64  268894730
> -    6   10.2.7.17:7000 <http://10.2.7.17:7000/>         64  285671946
> -    7   10.2.7.18:7000 <http://10.2.7.18:7000/>         64  302449162
> 
> 
> 

Sheepdog is a storage system, not a VM management system. When the host
node crashes, it means the memory state is lost, there is not copy for
it. But you can restart VM on any node alive without problem.

Thanks,
Yuan