[v4,0/4] colo: Add support for continious replication

Message

Lukas Straub Sept. 10, 2019, 10:14 a.m. UTC

Hello Everyone,
These Patches add support for continious replication to colo. This means
that after the Primary fails and the Secondary did a failover, the Secondary
can then become Primary and resume replication to a new Secondary.

On a side note, I wrote a Pacemaker Resource Agent for colo which I will
post when its ready.
I have to say it's quite fun to randomly kill a Node, wait for resync
and repeat and see how the VM stays alive all the time. :)

Regards,
Lukas Straub

v4:
 - fix checkpatch.pl warnings

v3:
 - add test for replication changes
 - check if the filter to be inserted before/behind belongs to the same interface
 - fix the error message for the position= parameter
 - rename term "after" -> "behind" and variable "insert_before" -> "insert_before_flag"
 - document the quorum node on the secondary side
 - simplify quorum parameters in documentation
 - remove trailing spaces in documentation
 - clarify the testing procedure in documentation

v2:
 - fix email formating
 - fix checkpatch.pl warnings
 - fix patchew error
 - clearer commit messages

Lukas Straub (4):
  block/replication.c: Ignore requests after failover
  tests/test-replication.c: Add test for ignoring requests after
    failover
  net/filter.c: Add Options to insert filters anywhere in the filter
    list
  colo: Update Documentation for continious replication

 block/replication.c        |  38 ++++++-
 docs/COLO-FT.txt           | 212 +++++++++++++++++++++++++++----------
 docs/block-replication.txt |  26 +++--
 include/net/filter.h       |   2 +
 net/filter.c               |  78 +++++++++++++-
 qemu-options.hx            |  10 +-
 tests/test-replication.c   |  52 +++++++++
 7 files changed, 343 insertions(+), 75 deletions(-)

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2.20.1