[Qemu-block] [PATCH 0/2] fix qmp-cont vs migration-finish race-crash

[Vladimir Sementsov-Ogievskiy]

Hi.

It's a simple fix for problems reported in "Aborts in iotest 169"
by Max:
https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg05907.html

In thread Kevin described that a problem itself is bigger and needs
more effort:
https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg06136.html

So, we may continue discussion in "Aborts in iotest 169", and in
parallel apply these patches at least as a temporary fix.

The problem of this fix is that we finally have a bit weird interface:

User gets event MIGRATION_COMPLETED, and after it he can get error
message "Migration is not finalized yet". 

But it is better than crash, anyway.

Vladimir Sementsov-Ogievskiy (2):
  qmp: forbid qmp_cont in RUN_STATE_FINISH_MIGRATE
  iotest: fix 169: do not run qmp_cont in RUN_STATE_FINISH_MIGRATE

 qmp.c                  | 3 +++
 tests/qemu-iotests/169 | 7 ++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

-- 
2.18.0