openstack/python-openstackclient
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Expand help of server migrate command

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mention server migrate is 'offline', and mention live migration and how
it is different.

Change-Id: Ia9af8e4a21989c39deaf2f6f7e1039b3fc4a0eef
Signed-off-by: Pavlo Shchelokovskyy <shchelokovskyy@gmail.com>
This commit is contained in:
Pavlo Shchelokovskyy
2026-03-11 13:46:34 +00:00
parent de81f47305
commit c20a0537d7
1 changed files with 16 additions and 7 deletions
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23
openstackclient/compute/v2/server.py
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@@ -3189,13 +3189,22 @@ class MigrateServer(command.Command):
_description = _(
"""Migrate server to different host.
A migrate operation is implemented as a resize operation using the same flavor
as the old server. This means that, like resize, migrate works by creating a
new server using the same flavor and copying the contents of the original disk
into a new one. As with resize, the migrate operation is a two-step process for
the user: the first step is to perform the migrate, and the second step is to
either confirm (verify) success and release the old server, or to declare a
revert to release the new server and restart the old one."""
There are two types of migration operation: a cold migration and a live
migration.
A cold migration operation is implemented as a resize operation
using the same flavor as the old server. This means that, like resize, migrate
works by shutting down the original server, creating a new server using the
same flavor and copying the contents of the original disk into a new one.
As with resize, the migrate operation is a two-step process for the user:
the first step is to perform the migrate, and the second step is to either
confirm (verify) success and release the old server, or to declare a revert
to release the new server and restart the old one.
By comparison, a live migration operation does not involve shutting the server
down, and is a one-step process that does not require a confirmation or revert
to finish.
"""
)
def get_parser(self, prog_name):