Hi Marcus,
On 2017/02/17 15:05, Marcus Furlong wrote:
On 17 February 2017 at 16:47, Rikimaru Honjo
<[email protected]> wrote:
Hi all,
I found and reported a unkind behavior of "openstack server migrate" command
when I maintained my environment.[1]
But, I'm wondering which solution is better.
Do you have opinions about following my solutions by operating point of
view?
I will commit a patch according to your opinions if those are gotten.
[1]https://bugs.launchpad.net/python-openstackclient/+bug/1662755
---
[Actual]
If user run "openstack server migrate --block-migration <UUID>",
openstack client call Cold migration API.
"--block migration" option will be ignored if user don't specify "--live".
But, IMO, this is unkindly.
This cause unexpected operation for operator.
+1 This has confused/annoyed me before.
P.S.
"--shared-migration" option has same issue.
For the shared migration case, there is also this bug:
https://bugs.launchpad.net/nova/+bug/1459782
which, if fixed/implemented would negate the need for
--shared-migration? And would fix also "nova resize" on shared
storage.
In my understanding, that report says about libvirt driver's behavior.
In the other hand, my report says about the logic of openstack client.
Current "openstack server migrate" command has following logic:
* openstack server migrate
+-User don't specify "--live"
| + Call cold-migrate API.
| Ignore "--block-migration" and "--shard-migration" option if user
specify those.
|
+-User specify "--live"
| + Call live-migration API.
|
+-User specify "--live --block-migration"
| + Call block-live-migration API.
|
+-User specify "--live --shared-migration"
+ Call live-migration API.[1]
[1]
"--shared-migration" means live-migration(not block-live-migrate) in "server
migrate" command.
In other words, "server migrate --live" and "server migrate --live
--shared-migration"
are same operation.
I'm wondering why "--shared-migration" is existed...
Cheers,
Marcus.
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