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List:       ssic-linux-devel
Subject:    RE: [SSI-devel] HA processes and cluster device access
From:       "Walker, Bruce J" <bruce.walker () hp ! com>
Date:       2005-02-23 7:00:38
Message-ID: 3689AF909D816446BA505D21F1461AE402AF3E7E () cacexc04 ! americas ! cpqcorp ! net
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Some research work on checkpoint/restart has been done (migrate a
process to disk instead of to another node) but the development hasn't
been integrated with the released versions.  I think that integration
will be done for as part of the 2.6 work (versions 1.9 and 2.0).

The remote device work could be adapted to non cluster environments.
There are  2 parts to it - naming and access.  The access part is via a
new set of file ops (that go remote).  Current naming is via CFS but
maybe could be adapted to say NFS.

Bruce
b

> -----Original Message-----
> From: ssic-linux-devel-admin@lists.sourceforge.net 
> [mailto:ssic-linux-devel-admin@lists.sourceforge.net] On 
> Behalf Of Roger Tsang
> Sent: Tuesday, February 22, 2005 8:01 PM
> To: brendan powers
> Cc: ssic-linux-devel@lists.sourceforge.net
> Subject: Re: [SSI-devel] HA processes and cluster device access
> 
> 
> Yes it is possible to do process checkpointing (in Linux).  
> As far as I
> know openSSI has not explored this option yet.
> 
> -Roger
> 
> 
> > Hello.
> > Is it possible to maintain the state of a process after a 
> failure of a
> > node. For instance, if i had an application running a 
> calculation, and
> > its node failed. Is there a way to resume the process on 
> another node.
> > Even if you have to reset it to a slightly older state(say 
> 30 secconds
> > ago)?
> >
> > Also, how is the remote device access done in openssi. Would it be
> > possible(or pratical) to do this in a non cluster environment?
> >
> >
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> 
> 
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