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Date: Fri, 10 Jul 2009 19:55:57 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] [PATCH 2/3] move vm stop/start to migrate_set_state
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To: malc <av1474@comtv.ru>
Cc: Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org

malc wrote:
> On Sat, 11 Jul 2009, Jamie Lokier wrote:
>   
> Sounds like http://en.wikipedia.org/wiki/Two_Generals%27_Problem
>   

And this is why the source remains in the stopped state instead of 
exiting after a successful migration.

The only "safe" solution is to use a reliable third party which is 
usually going to be a management tool.  If there is an undetected 
failure, the management tool always has the option of resuming the 
source node.

Regards,

Anthony Liguori