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

[Per Lundqvist]

The following filesystems are now available again from Dunder and Tornado:

   /nobackup/rossby1
   /nobackup/rossby2
   /nobackup/rossby3

/Per


On Tue, 27 May 2008, Per Lundqvist wrote:

> 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