Re: [Qemu-devel] [PATCH v2 0/3] colo: Add support for continious replication

["Dr. David Alan Gilbert" <dgilbert@redhat.com>]

* Lukas Straub (lukasstraub2@web.de) wrote:
> Hello Everyone,
> These Patches add support for continious replication to colo.
> Please review.


OK, for those who haven't followed COLO for so long; 'continuous
replication' is when after the first primary fails, you can promote the 
original secondary to a new primary and start replicating again;

i.e. current COLO gives you

p<->s
    <primary fails>
    s

with your patches you can do

    s becomes p2
    p2<->s2

and you're back to being resilient again.

Which is great; because that was always an important missing piece.

Do you have some test scripts/setup for this - it would be great
to automate some testing.

Dave

> Regards,
> Lukas Straub
> 
> v2:
>  - fix email formating
>  - fix checkpatch.pl warnings
>  - fix patchew error
>  - clearer commit messages
> 
> Lukas Straub (3):
>   Replication: Ignore requests after failover
>   net/filter.c: Add Options to insert filters anywhere in the filter
>     list
>   Update Documentation
> 
>  block/replication.c  |  38 ++++++++-
>  docs/COLO-FT.txt     | 185 ++++++++++++++++++++++++++++++++-----------
>  include/net/filter.h |   2 +
>  net/filter.c         |  71 ++++++++++++++++-
>  qemu-options.hx      |  10 +--
>  5 files changed, 250 insertions(+), 56 deletions(-)
> 
> --
> 2.20.1
> 
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK