On 06/11/15 at 02:47pm, Jay Pipes wrote:
On 06/03/2015 04:39 AM, Rui Chen wrote:
Hi all:
We have the instance action and action event for most of the
instance operations,
exclude: live-migration. In the current master code, when we do
live-migration, the
instance action is recorded, but the action event for live-migration is
lost. I'm not sure that
it's a bug or design behavior, so I want to get more feedback in mail list.
Seems like that would be a bug.
I found the patch https://review.openstack.org/#/c/95440/
It's add the live migration action, but no event. It looks weird.
I think there are two improvement we can do
[1]: add the live migration event, keep consistence with other
instance operations.
++
[2]: remove the live migration action in order to make the
operation transparent to end-users, like Andrew say in the patch comments.
I guess I'm confused why we would want to make the operation
transparent to end-users? Andrew, what was your thought on that?
Just that it's something the user shouldn't need to care about. A
live-migration is not a user initiated event, though I suppose it could
be in some deployments, and the end result is that the instance is
running on another host with no other appreciable change.
There are many reasons a deployer may want to live-migrate instances
around: capacity planning, security patching, noisy neighbors, host
maintenance, etc... and I just don't think the user needs to know or
care that it has taken place.
I'm not against exposing it, but I do think that some operators will
want the option to live-migrate without informing their users.
Best,
-jay
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