[Dunder-users] Re: tornado/dunder: service stop on Tue May 27 0800 CEST

[Per Lundqvist]

The stop is not over yet, but the login node on Dunder is now available.

Note that no /nobackup-filesystem is available at the moment. The 
remaining filesystems will be available as soon as we are finished with 
the maintenance of them.

/Per


On Mon, 19 May 2008, Per Lundqvist wrote:

> On Tue May 27 0800 CEST, _all_ distributed filesystems on Dunder and 
> Tornado (i.e. /home and /nobackup/*) will be taken offline for maintenance 
> of the corresponding disk servers.
> 
> Since this also affects /home on both systems, everybody will have to be 
> logged out while the corresponding disk server is being checked - we will 
> prioritize /home though, so that you may log in as soon as possible.
> 
> The batch queuing system will be stopped during this - i.e. we will put a 
> blocking reservation that prevents jobs to run at the time.
> 
> The amount of time for this is uncertain, an initial estimate is that we 
> are done ~ 2000 on the same day.
> 
> Schedule Tue 27/5:
>    0800 - stop begins, everybody will be logged out from dunder and
>           tornado. The batch queuing system will be stopped.
>    ...	- all distributed filesystems will be unmounted from all nodes
> 	  on Dunder and Tornado
>    ...	- maintenance begins on all disk servers
>    ...  - filesystems will be mounted again as soon as possible (/home
>           prioritized)
>    ...	- when /home is available you will be notified and be able to
>           log in again
>    ...	- when the rest of the filesystems on each respective
>           filesystem are available you will be notified and the batch
>           queuing system will start again.
> 
> /Per
> 
> 

-- 
Per Lundqvist

National Supercomputer Centre
Linköping University, Sweden

http://www.nsc.liu.se