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Re: [Qemu-devel] [PATCH 2/3] move vm stop/start to migrate_set_state

From: Anthony Liguori
Subject: Re: [Qemu-devel] [PATCH 2/3] move vm stop/start to migrate_set_state
Date: Fri, 10 Jul 2009 19:55:57 -0500
User-agent: Thunderbird (X11/20090320)

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.


Anthony Liguori

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