Signed-off-by: Lukas Straub <[email protected]> --- docs/system/qemu-colo.rst | 30 ++++++++++++------------------ 1 file changed, 12 insertions(+), 18 deletions(-)
diff --git a/docs/system/qemu-colo.rst b/docs/system/qemu-colo.rst index 5b00c6c4c2679153f398ed5a85a5d9cc515630e6..2052e207e57afdd3ab3ab1a447d55f5e2e5b5b87 100644 --- a/docs/system/qemu-colo.rst +++ b/docs/system/qemu-colo.rst @@ -1,14 +1,6 @@ Qemu COLO Fault Tolerance ========================= -| Copyright (c) 2016 Intel Corporation -| Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. -| Copyright (c) 2016 Fujitsu, Corp. -| Copyright (c) 2026 Lukas Straub <[email protected]> - -This work is licensed under the terms of the GNU GPL, version 2 or later. -See the COPYING file in the top-level directory. - This document gives an overview of COLO's design and how to use it. Background @@ -83,8 +75,8 @@ Overview:: | Storage | |External Network| | External Network | | Storage | +---------------+ +----------------+ +------------------+ +--------------+ -Components introduction -^^^^^^^^^^^^^^^^^^^^^^^ +Components +^^^^^^^^^^ You can see there are several components in COLO's diagram of architecture. Their functions are described below. @@ -158,14 +150,14 @@ in test procedure. Test procedure -------------- -Note: Here we are running both instances on the same host for testing, +Here we are running both instances on the same host for testing, change the IP Addresses if you want to run it on two hosts. Initially ``127.0.0.1`` is the Primary Host and ``127.0.0.2`` is the Secondary Host. Startup qemu ^^^^^^^^^^^^ **1. Primary**: -Note: Initially, ``$imagefolder/primary.qcow2`` needs to be copied to all hosts. +Initially, ``$imagefolder/primary.qcow2`` needs to be copied to all hosts. You don't need to change any IP's here, because ``0.0.0.0`` listens on any interface. The chardev's with ``127.0.0.1`` IP's loopback to the local qemu instance:: @@ -193,7 +185,7 @@ instance:: **2. Secondary**: -Note: Active and hidden images need to be created only once and the +Active and hidden images need to be created only once and the size should be the same as ``primary.qcow2``. Again, you don't need to change any IP's here, except for the ``$primary_ip`` variable:: @@ -354,8 +346,10 @@ Wait until disk is synced, then:: {"execute": "migrate-set-capabilities", "arguments":{ "capabilities": [ {"capability": "x-colo", "state": true } ] } } {"execute": "migrate", "arguments":{ "uri": "tcp:127.0.0.1:9998" } } -TODO ----- -1. Support shared storage. -2. Develop the heartbeat part. -3. Reduce checkpoint VM’s downtime while doing checkpoint. +| Copyright (c) 2016 Intel Corporation +| Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. +| Copyright (c) 2016 Fujitsu, Corp. +| Copyright (c) 2026 Lukas Straub <[email protected]> + +This work is licensed under the terms of the GNU GPL, version 2 or later. +See the COPYING file in the top-level directory. \ No newline at end of file -- 2.39.5
