[Linux-ha-dev] RFC: "migrate" semantics

[Lars Marowsky-Bree]

On 2006-10-04T10:13:42, Serge Dubrouski <sergeyfd at gmail.com> wrote:

> Some thoughts.
> 
> 1. XEN supports 2 kinds of migration. You are talking about "live"
> migration. Default one for XEN (at least in the current official
> 3.0.2) isn't live.

Of course. Non-live migration is boring. ;-)

> 2. XEN resources are atomic. I mean virtual machine is just one
> resource that is concidered as a whole. In case of Heartbeat resource
> can be and in most cases is a complex structure: IP Address +
> DiskDevice + FileSystem + DataBase, etc... That complicates "migrate"
> idea a lot. Having an ability to move just IP address in that group
> doesn't give you a lot.

Obviously, migrate doesn't make sense for all resources. It does for Xen
and other containers, though, and could make sense for other resources
eventually.

But, I hope I'm not being obtuse, the feedback doesn't actually require
any change in the proposal, right?



Sincerely,
    Lars

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High Availability & Clustering
SUSE Labs, Research and Development
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