[Xen-devel] XEN migration architecture question

[Eric Tessler <maiden1134@xxxxxxxxx>]

I have an important question about XEN's migation operation related to the XEN block and network back/front drivers.  If I migrate a domain from one machine to another in the middle of heavy disk/network activity, what happnens to the back/front end XEN drivers? (I see they have suspend/resume operations but I don't believe they are being used)  I see that the front end drivers are passing machine addresses to the back-end drivers - are these pointers somehow still valid when a domain is moved to another machine?  Shouldn't the drivers wait until there is no I/O activity before being migrated?

 

Thanks,

Eric

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