2:48 p.m.
From: Daniel Henrique Barboza <dhbarboza82(a)gmail.com>
Changes in v3:
- get hostname by using python socket API instead of run_command
with 'hostname' command
- closed remote connection in _migrate_task
- removed 'test:///default' declaration in test files
- added a test to cover the API
Changes in v2:
- changes asked by pvital: verifying host name properly, break line in
docs/API.md, changed the format of i18n messages.
- one of the existing tests was enhanced to support the local host
verification properly.
----
This patch series implements the first release of the Live (and cold!)
migration in Kimchi.
*** Requirements for a VM migration ***
- shared storage. The disk/storage path must be the same at the origin
and destination.
- password-less login
- enough resorces in the destination host to allocate the VM
Limitations of this first version and possible candidates for future work:
- non-shared migration not supported
- do not automate the process of password-less login (but it is able to
verify this condition)
- due to the above limitation, the 'user' parameter value is only 'root'
at this moment
- do not verify the 'shared storage' condition
- do not verify same hypervisor/arch conditions
- the origin VM will shutdown after migration (not sure if can be helped)
*** Curl usage ***
curl -u username -H "Content-Type: application/json" -H "Accept:
application/json" -k "https://localhost:10001/plugins/kimchi/vms/<VM
NAME>/migrate" -X POST -d
'{"remote_host":"insert_remote_IP_address",
"user":"username"}'
*** Unit test usage ***
The unit tests for this feature needs an additional parameter in the command line
of ./run-tests.sh:
$ sudo KIMCHI_LIVE_MIGRATION_TEST=remote_host_IP ./run_tests.sh test_livemigration
If this parameter is not supplied the unit test will simply skip. The test also
verifies the password-less condition before trying to test a vm migration.
Daniel Henrique Barboza (3):
Live migration backend: API and messages
Live migration backend: control/vms and model/vms changes
Live migration backend: unit tests
src/wok/plugins/kimchi/API.json | 17 +
src/wok/plugins/kimchi/control/vms.py | 3 +
src/wok/plugins/kimchi/docs/API.md | 5 +
src/wok/plugins/kimchi/i18n.py | 7 +
src/wok/plugins/kimchi/model/vms.py | 75 ++++-
src/wok/plugins/kimchi/tests/test_livemigration.py | 356 +++++++++++++++++++++
src/wok/plugins/kimchi/ui/js/src/kimchi.api.js | 13 +
7 files changed, 475 insertions(+), 1 deletion(-)
create mode 100644 src/wok/plugins/kimchi/tests/test_livemigration.py
--
2.4.3