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docs: fix COLO architecture diagram 

Fix COLO-Proxy part of COLO architecture diagram

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Zhang Chen 2016-11-01 11:38:12 +08:00 committed by Jason Wang
parent e79cd40680
commit a38299bf43
1 changed files with 37 additions and 35 deletions
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docs/COLO-FT.txt
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@ -42,41 +42,43 @@ are detected between the PVM and SVM, COLO withholds transmission of the
outbound packets until it has successfully synchronized the PVM state to the SVM.
Primary Node Secondary Node
+------------+ +-----------------------+ +------------------------+ +------------+
| | | HeartBeat |<----->| HeartBeat | | |
| Primary VM | +-----------|-----------+ +-----------|------------+ |Secondary VM|
| | | | | |
| | +-----------|-----------+ +-----------|------------+ | |
| | |QEMU +---v----+ | |QEMU +----v---+ | | |
| | | |Failover| | | |Failover| | | |
| | | +--------+ | | +--------+ | | |
| | | +---------------+ | | +---------------+ | | |
| | | | VM Checkpoint |-------------->| VM Checkpoint | | | |
| | | +---------------+ | | +---------------+ | | |
| | | | | | | |
|Requests<---------------------------^------------------------------------------>Requests|
|Responses----------------------\ /--|--------------\ /------------------------Responses|
| | | | | | | | | | | | |
| | | +-----------+ | | | | | | | +------------+ | | |
| | | | COLO disk | | | | | | | | | COLO disk | | | |
| | | | Manager |-|-|--|--------------|--|->| Manager | | | |
| | | +|----------+ | | | | | | | +-----------|+ | | |
| | | | | | | | | | | | | | |
+------------+ +--|------------|-|--|--+ +---|--|--------------|--+ +------------+
| | | | | | |
+-------------+ | +----------v-v--|--+ +---|--v-----------+ | +-------------+
| VM Monitor | | | COLO Proxy | | COLO Proxy | | | VM Monitor |
| | | |(compare packet) | | (adjust sequence)| | | |
+-------------+ | +----------|----^--+ +------------------+ | +-------------+
+------------+ +-----------------------+ +------------------------+ +------------+
| | | HeartBeat +<----->+ HeartBeat | | |
| Primary VM | +-----------+-----------+ +-----------+------------+ |Secondary VM|
| | | | | |
| | +-----------|-----------+ +-----------|------------+ | |
| | |QEMU +---v----+ | |QEMU +----v---+ | | |
| | | |Failover| | | |Failover| | | |
| | | +--------+ | | +--------+ | | |
| | | +---------------+ | | +---------------+ | | |
| | | | VM Checkpoint +-------------->+ VM Checkpoint | | | |
| | | +---------------+ | | +---------------+ | | |
|Requests<--------------------------\ /-----------------\ /--------------------->Requests|
| | | ^ ^ | | | | | | |
|Responses+---------------------\ /-|-|------------\ /-------------------------+Responses|
| | | | | | | | | | | | | | | |
| | | +-----------+ | | | | | | | | | | +----------+ | | |
| | | | COLO disk | | | | | | | | | | | | COLO disk| | | |
| | | | Manager +---------------------------->| Manager | | | |
| | | ++----------+ v v | | | | | v v | +---------++ | | |
| | | |+-----------+-+-+-++| | ++-+--+-+---------+ | | | |
| | | || COLO Proxy || | | COLO Proxy | | | | |
| | | || (compare packet || | |(adjust sequence | | | | |
| | | ||and mirror packet)|| | | and ACK) | | | | |
| | | |+------------+---+-+| | +-----------------+ | | | |
+------------+ +-----------------------+ +------------------------+ +------------+
+------------+ | | | | +------------+
| VM Monitor | | | | | | VM Monitor |
+------------+ | | | | +------------+
+---------------------------------------+ +----------------------------------------+
| Kernel | | | | | Kernel | |
+---------------------------------------+ +----------------------------------------+
| | | |
+------------------|------------|----|--+ +---------------------|------------------+
| Kernel | | | | | Kernel | |
+------------------|------------|----|--+ +---------------------|------------------+
| | | |
+--------------v+ +--------v----|--+ +------------------+ +v-------------+
+--------------v+ +---------v---+--+ +------------------+ +v-------------+
| Storage | |External Network| | External Network | | Storage |
+---------------+ +----------------+ +------------------+ +--------------+
== Components introduction ==
You can see there are several components in COLO's diagram of architecture.