[Kimchi-devel] [PATCH 0/3 v3] Live migration backend

[Paulo Ricardo Paz Vital]

Reviewed-By: Paulo Vital <pvital at linux.vnet.ibm.com>

On Thu, 2015-10-29 at 17:48 -0200, dhbarboza82 at gmail.com wrote:
> From: Daniel Henrique Barboza <dhbarboza82 at 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
>