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docs: Add COLO status diagram to COLO-FT.txt 

This diagram make user better understand COLO.
Suggested by Markus Armbruster.

Signed-off-by: Zhang Chen <zhangckid@gmail.com>
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
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Zhang Chen 2018-09-03 12:39:00 +08:00 committed by Jason Wang
parent 2518aec192
commit 8e640892ec
1 changed files with 34 additions and 0 deletions
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docs/COLO-FT.txt
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@ -110,6 +110,40 @@ Note:
HeartBeat has not been implemented yet, so you need to trigger failover process HeartBeat has not been implemented yet, so you need to trigger failover process
by using 'x-colo-lost-heartbeat' command. by using 'x-colo-lost-heartbeat' command.
== COLO operation status ==
+-----------------+
| |
| Start COLO |
| |
+--------+--------+
|
| Main qmp command:
| migrate-set-capabilities with x-colo
| migrate
|
v
+--------+--------+
| |
| COLO running |
| |
+--------+--------+
|
| Main qmp command:
| x-colo-lost-heartbeat
| or
| some error happened
v
+--------+--------+
| | send qmp event:
| COLO failover | COLO_EXIT
| |
+-----------------+
COLO use the qmp command to switch and report operation status.
The diagram just shows the main qmp command, you can get the detail
in test procedure.
== Test procedure == == Test procedure ==
1. Startup qemu 1. Startup qemu
Primary: Primary: