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[V11,20/20] docs: Add COLO status diagram to COLO-FT.txt

Message ID 20180811205924.4113-21-zhangckid@gmail.com
State New
Headers show
Series COLO: integrate colo frame with block replication and COLO proxy | expand

Commit Message

Zhang Chen Aug. 11, 2018, 8:59 p.m. UTC 
From: Zhang Chen <chen.zhang@intel.com>

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>
---
 docs/COLO-FT.txt | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
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Patch

diff --git a/docs/COLO-FT.txt b/docs/COLO-FT.txt
index d7c7dcda8f..d5007895d1 100644
--- a/docs/COLO-FT.txt
+++ b/docs/COLO-FT.txt
@@ -110,6 +110,40 @@  Note:
 HeartBeat has not been implemented yet, so you need to trigger failover process
 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 switching and report operation status.
+The diagram just write the main qmp command, you can get the detail
+in test procedure.
+
 == Test procedure ==
 1. Startup qemu
 Primary: