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migration: Add 'pre-switchover' and 'device' statuses 

Add two statuses for use when the 'pause-before-switchover'
capability is enabled.

'pre-switchover' is the state that we wait in for management
to allow us to continue.
'device' is the state we enter while serialising the devices
after management gives us the OK.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2017-10-20 10:05:51 +01:00 committed by Juan Quintela
parent 93fbd0314e
commit 31e060774c
2 changed files with 13 additions and 1 deletions
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6
migration/migration.c
View File

@ -526,6 +526,8 @@ static bool migration_is_setup_or_active(int state)
case MIGRATION_STATUS_ACTIVE:
case MIGRATION_STATUS_POSTCOPY_ACTIVE:
case MIGRATION_STATUS_SETUP:
case MIGRATION_STATUS_PRE_SWITCHOVER:
case MIGRATION_STATUS_DEVICE:
return true;
default:
@ -600,6 +602,8 @@ MigrationInfo *qmp_query_migrate(Error **errp)
case MIGRATION_STATUS_ACTIVE:
case MIGRATION_STATUS_CANCELLING:
case MIGRATION_STATUS_POSTCOPY_ACTIVE:
case MIGRATION_STATUS_PRE_SWITCHOVER:
case MIGRATION_STATUS_DEVICE:
/* TODO add some postcopy stats */
info->has_status = true;
info->has_total_time = true;
@ -1189,6 +1193,8 @@ bool migration_is_idle(void)
case MIGRATION_STATUS_ACTIVE:
case MIGRATION_STATUS_POSTCOPY_ACTIVE:
case MIGRATION_STATUS_COLO:
case MIGRATION_STATUS_PRE_SWITCHOVER:
case MIGRATION_STATUS_DEVICE:
return false;
case MIGRATION_STATUS__MAX:
g_assert_not_reached();

8
qapi/migration.json
View File

@ -96,12 +96,18 @@
# @colo: VM is in the process of fault tolerance, VM can not get into this
# state unless colo capability is enabled for migration. (since 2.8)
#
# @pre-switchover: Paused before device serialisation. (since 2.11)
#
# @device: During device serialisation when pause-before-switchover is enabled
# (since 2.11)
#
# Since: 2.3
#
##
{ 'enum': 'MigrationStatus',
'data': [ 'none', 'setup', 'cancelling', 'cancelled',
'active', 'postcopy-active', 'completed', 'failed', 'colo' ] }
'active', 'postcopy-active', 'completed', 'failed', 'colo',
'pre-switchover', 'device' ] }
##
# @MigrationInfo: