[one-dev] Live migration / recovery

[Gareth Bult]

Hi, 

I implemented live migration for the VDC driver a few weeks back and on the whole it seems to work 
quite well. The "premigrate" script creates a cache instance on the target server and puts the source 
cache into proxy mode, then the "postmigrate" script kills the original cache instance. 

Problem :: if the migration fails, I'm left with a running cache on both the source and target servers, with 
the source cache in proxy mode. I have a 1-line CLI command to revert the issue, but I need to hook into 
the system in order to call it. 

How to do I do this, I guess effectively I need something like "postmigrate_fail" .. ??? 

tia 
Gareth. 

-- 
	Gareth Bult 
“The odds of hitting your target go up dramatically when you aim at it.” 



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