Re: [PATCH v3 0/7] colo: Introduce resource agent and test suite/CI

[Lukas Straub <lukasstraub2@web.de>]

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On Tue, 18 Aug 2020 14:27:01 +0200
Lukas Straub <lukasstraub2@web.de> wrote:

> On Tue, 4 Aug 2020 12:46:29 +0200
> Lukas Straub <lukasstraub2@web.de> wrote:
> 
> > Hello Everyone,
> > So here is v3. Patch 1 can already be merged independently of the others.
> > Please review.
> > 
> > Regards,
> > Lukas Straub
> > 
> > Based-on: <cover.1596528468.git.lukasstraub2@web.de>
> > "Introduce 'yank' oob qmp command to recover from hanging qemu"
> > 
> > Changes:
> > 
> > v3:
> >  -resource-agent: Don't determine local qemu state by remote master-score, query
> >   directly via qmp instead
> >  -resource-agent: Add max_queue_size parameter for colo-compare
> >  -resource-agent: Fix monitor action on secondary returning error during
> >   clean shutdown
> >  -resource-agent: Fix stop action setting master-score to 0 on primary on
> >   clean shutdown
> > 
> > v2:
> >  -use new yank api
> >  -drop disk_size parameter
> >  -introduce pick_qemu_util function and use it
> > 
> > Overview:
> > 
> > Hello Everyone,
> > These patches introduce a resource agent for fully automatic management of colo
> > and a test suite building upon the resource agent to extensively test colo.
> > 
> > Test suite features:
> > -Tests failover with peer crashing and hanging and failover during checkpoint
> > -Tests network using ssh and iperf3
> > -Quick test requires no special configuration
> > -Network test for testing colo-compare
> > -Stress test: failover all the time with network load
> > 
> > Resource agent features:
> > -Fully automatic management of colo
> > -Handles many failures: hanging/crashing qemu, replication error, disk error, ...
> > -Recovers from hanging qemu by using the "yank" oob command
> > -Tracks which node has up-to-date data
> > -Works well in clusters with more than 2 nodes
> > 
> > Run times on my laptop:
> > Quick test: 200s
> > Network test: 800s (tagged as slow)
> > Stress test: 1300s (tagged as slow)
> > 
> > For the last two tests, the test suite needs access to a network bridge to
> > properly test the network, so some parameters need to be given to the test
> > run. See tests/acceptance/colo.py for more information.
> > 
> > Regards,
> > Lukas Straub
> > 
> > Lukas Straub (7):
> >   block/quorum.c: stable children names
> >   avocado_qemu: Introduce pick_qemu_util to pick qemu utility binaries
> >   boot_linux.py: Use pick_qemu_util
> >   colo: Introduce resource agent
> >   colo: Introduce high-level test suite
> >   configure,Makefile: Install colo resource-agent
> >   MAINTAINERS: Add myself as maintainer for COLO resource agent
> > 
> >  MAINTAINERS                               |    6 +
> >  Makefile                                  |    5 +
> >  block/quorum.c                            |   20 +-
> >  configure                                 |   10 +
> >  scripts/colo-resource-agent/colo          | 1501 +++++++++++++++++++++
> >  scripts/colo-resource-agent/crm_master    |   44 +
> >  scripts/colo-resource-agent/crm_resource  |   12 +
> >  tests/acceptance/avocado_qemu/__init__.py |   15 +
> >  tests/acceptance/boot_linux.py            |   11 +-
> >  tests/acceptance/colo.py                  |  677 ++++++++++
> >  10 files changed, 2286 insertions(+), 15 deletions(-)
> >  create mode 100755 scripts/colo-resource-agent/colo
> >  create mode 100755 scripts/colo-resource-agent/crm_master
> >  create mode 100755 scripts/colo-resource-agent/crm_resource
> >  create mode 100644 tests/acceptance/colo.py
> > 
> > --
> > 2.20.1  
> 
> Ping...

Ping 2...

Kevin, can you already apply patch 1 "block/quorum.c: stable children names"? It resolves the following bug: https://bugs.launchpad.net/qemu/+bug/1881231

Regards,
Lukas Straub

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