[GE users] scenario quizz

Reuti reuti at staff.uni-marburg.de
Wed Dec 19 19:59:33 GMT 2007


Am 19.12.2007 um 19:11 schrieb Alexandre Racine:

> Here is a scenario quizz.
> I have a cluster of 3 machines and need to reboot one of them. It's  
> the master server and there is no shadow server.
> All processor are running something so I'll reduce the queue of the  
> master server to 0, eventually all task will be done so the master  
> server wont take any new task.

it would have been sufficient just to disable the queue instance  
residing on this master machine to drain it.

> What will happen with the other tasks on the other servers?  
> Everything is in GFS, so no disk problem here, and of course if  
> some task finish on the nodes, no scheduler will be there to push  
> another job. After the reboot everything will be just like before  
> and I'll put back some slots on the master server.

Yep. The jobs on the nodes should simply continue to run and appear  
again in qstat after the reboot (unless they finished in the meantime).

-- Reuti

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