-----Original Message-----
From: Dr. David Alan Gilbert [mailto:[email protected]]
Sent: Saturday, March 9, 2019 1:41 AM
To: Zhang, Chen <[email protected]>
Cc: Li Zhijian <[email protected]>; Zhang Chen <[email protected]>;
Juan Quintela <[email protected]>; zhanghailiang
<[email protected]>; Markus Armbruster <[email protected]>; Eric
Blake <[email protected]>; qemu-dev <[email protected]>
Subject: Re: [PATCH V3 6/7] Migration/colo.c: Add the necessary checks for
colo_do_failover
* Zhang Chen ([email protected]) wrote:
> From: Zhang Chen <[email protected]>
>
> Signed-off-by: Zhang Chen <[email protected]>
OK, we should make that properly return an error.
(Actually we should make the failover command be one of the new OOB commands;
so that it can work even if the main loop is blocked- that would make COLO
robust properly against network failures)
Good idea~ which OOB command can be the demo in current Qemu?
Maybe I can do this job in the future.
Thanks
Zhang Chen
Reviewed-by: Dr. David Alan Gilbert <[email protected]>
> ---
> migration/colo.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/migration/colo.c b/migration/colo.c index
> dbe2b88807..d1ae2e6d11 100644
> --- a/migration/colo.c
> +++ b/migration/colo.c
> @@ -197,10 +197,16 @@ void colo_do_failover(MigrationState *s)
> vm_stop_force_state(RUN_STATE_COLO);
> }
>
> - if (get_colo_mode() == COLO_MODE_PRIMARY) {
> + switch (get_colo_mode()) {
> + case COLO_MODE_PRIMARY:
> primary_vm_do_failover();
> - } else {
> + break;
> + case COLO_MODE_SECONDARY:
> secondary_vm_do_failover();
> + break;
> + default:
> + error_report("colo_do_failover failed because the colo mode"
> + " could not be obtained");
> }
> }
>
> --
> 2.17.GIT
>
--
Dr. David Alan Gilbert / [email protected] / Manchester, UK
