Re: [Qemu-devel] [PATCH COLO-Frame v10 10/38] COLO: Add a new RunState RUN_STATE_COLO

[Dr. David Alan Gilbert]

* zhanghailiang (address@hidden) wrote:
> Guest will enter this state when paused to save/restore VM state
> under colo checkpoint.

Reviewed-by: Dr. David Alan Gilbert <address@hidden>

> 
> Cc: Eric Blake <address@hidden>
> Cc: Markus Armbruster <address@hidden>
> Signed-off-by: zhanghailiang <address@hidden>
> Signed-off-by: Li Zhijian <address@hidden>
> Signed-off-by: Gonglei <address@hidden>
> Reviewed-by: Dr. David Alan Gilbert <address@hidden>
> Reviewed-by: Eric Blake <address@hidden>
> ---
>  qapi-schema.json | 7 ++++++-
>  vl.c             | 8 ++++++++
>  2 files changed, 14 insertions(+), 1 deletion(-)
> 
> diff --git a/qapi-schema.json b/qapi-schema.json
> index 5c4fe6d..49f2a90 100644
> --- a/qapi-schema.json
> +++ b/qapi-schema.json
> @@ -154,12 +154,15 @@
>  # @watchdog: the watchdog action is configured to pause and has been 
> triggered
>  #
>  # @guest-panicked: guest has been panicked as a result of guest OS panic
> +#
> +# @colo: guest is paused to save/restore VM state under colo checkpoint 
> (since
> +# 2.5)
>  ##
>  { 'enum': 'RunState',
>    'data': [ 'debug', 'inmigrate', 'internal-error', 'io-error', 'paused',
>              'postmigrate', 'prelaunch', 'finish-migrate', 'restore-vm',
>              'running', 'save-vm', 'shutdown', 'suspended', 'watchdog',
> -            'guest-panicked' ] }
> +            'guest-panicked', 'colo' ] }
>  
>  ##
>  # @StatusInfo:
> @@ -434,6 +437,8 @@
>  #
>  # @failed: some error occurred during migration process.
>  #
> +# @colo: VM is in the process of fault tolerance. (since 2.5)
> +#
>  # Since: 2.3
>  #
>  ##
> diff --git a/vl.c b/vl.c
> index 10e6cbe..c459a3e 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -586,6 +586,7 @@ static const RunStateTransition 
> runstate_transitions_def[] = {
>      { RUN_STATE_INMIGRATE, RUN_STATE_WATCHDOG },
>      { RUN_STATE_INMIGRATE, RUN_STATE_GUEST_PANICKED },
>      { RUN_STATE_INMIGRATE, RUN_STATE_FINISH_MIGRATE },
> +    { RUN_STATE_INMIGRATE, RUN_STATE_COLO },
>  
>      { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PAUSED },
>      { RUN_STATE_INTERNAL_ERROR, RUN_STATE_FINISH_MIGRATE },
> @@ -595,6 +596,7 @@ static const RunStateTransition 
> runstate_transitions_def[] = {
>  
>      { RUN_STATE_PAUSED, RUN_STATE_RUNNING },
>      { RUN_STATE_PAUSED, RUN_STATE_FINISH_MIGRATE },
> +    { RUN_STATE_PAUSED, RUN_STATE_COLO},
>  
>      { RUN_STATE_POSTMIGRATE, RUN_STATE_RUNNING },
>      { RUN_STATE_POSTMIGRATE, RUN_STATE_FINISH_MIGRATE },
> @@ -605,9 +607,12 @@ static const RunStateTransition 
> runstate_transitions_def[] = {
>  
>      { RUN_STATE_FINISH_MIGRATE, RUN_STATE_RUNNING },
>      { RUN_STATE_FINISH_MIGRATE, RUN_STATE_POSTMIGRATE },
> +    { RUN_STATE_FINISH_MIGRATE, RUN_STATE_COLO},
>  
>      { RUN_STATE_RESTORE_VM, RUN_STATE_RUNNING },
>  
> +    { RUN_STATE_COLO, RUN_STATE_RUNNING },
> +
>      { RUN_STATE_RUNNING, RUN_STATE_DEBUG },
>      { RUN_STATE_RUNNING, RUN_STATE_INTERNAL_ERROR },
>      { RUN_STATE_RUNNING, RUN_STATE_IO_ERROR },
> @@ -618,6 +623,7 @@ static const RunStateTransition 
> runstate_transitions_def[] = {
>      { RUN_STATE_RUNNING, RUN_STATE_SHUTDOWN },
>      { RUN_STATE_RUNNING, RUN_STATE_WATCHDOG },
>      { RUN_STATE_RUNNING, RUN_STATE_GUEST_PANICKED },
> +    { RUN_STATE_RUNNING, RUN_STATE_COLO},
>  
>      { RUN_STATE_SAVE_VM, RUN_STATE_RUNNING },
>  
> @@ -628,9 +634,11 @@ static const RunStateTransition 
> runstate_transitions_def[] = {
>      { RUN_STATE_RUNNING, RUN_STATE_SUSPENDED },
>      { RUN_STATE_SUSPENDED, RUN_STATE_RUNNING },
>      { RUN_STATE_SUSPENDED, RUN_STATE_FINISH_MIGRATE },
> +    { RUN_STATE_SUSPENDED, RUN_STATE_COLO},
>  
>      { RUN_STATE_WATCHDOG, RUN_STATE_RUNNING },
>      { RUN_STATE_WATCHDOG, RUN_STATE_FINISH_MIGRATE },
> +    { RUN_STATE_WATCHDOG, RUN_STATE_COLO},
>  
>      { RUN_STATE_GUEST_PANICKED, RUN_STATE_RUNNING },
>      { RUN_STATE_GUEST_PANICKED, RUN_STATE_FINISH_MIGRATE },
> -- 
> 1.8.3.1
> 
> 
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK