Kirill Korotaev wrote:
Bill,
So I would detailed it like this:
- freeze VPS
when the VM stops providing services it's down as far as I'm concerned
please, note, that connections are not dropped, new connections are not
responded with RESET and when VM is migrated all the clients are
serviced as if nothing has happened. From client point of view there is
only a small delay in servicing, but not a real downtime (when clients
are rejected). Maybe due to these some of people call it zero down-time.
Though from technical POV this is not the best term for sure. It is
better to call it checkpointing/restore or live migration.
With that I can agree. The argument that it's not down it's just
unavailable isn't convincing. I think "live migration" is a really good
description of what takes place, thanks for the nomenclature.
--
-bill davidsen ([email protected])
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me
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