Alan Cox wrote:
>Moving VM's around opens an entire world you can't do other ways. The
>Xen folks examples include moving web sites or game servers to be in a
>good place with low latency to the current players. When your machine
>room catches fire or hits UPS you can move services elsewhere. All
>rather handy given the NY electricity supply 8)
On the mainframe, swsuspend is very handy for this: hibernate the guest to
swap space on one side, and
then simply resume it on a VM where the power supply seems more reliable.
Given the fact that the ESS storage
server,  which is commonly used in zSeries environments, offers seamless
peer-to-peer remote copy functions for
disk volumes, even your entire data center can burn down but you can still
resume the guest in the backup data
center.
Once swsuspend stabelizes in the kernel, we should look at what needs to
be done in order to make it handy for
guest migration on the mainframe...

with kind regards
Carsten Otte
--
omnis enim res, quae dando non deficit, dum habetur et non datur, nondum
habetur, quomodo habenda est


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