[Qemu-devel] [RFC v2 08/33] migration: new postcopy-pause state

[Peter Xu <peterx@redhat.com>]

Introducing a new state "postcopy-paused", which can be used when the
postcopy migration is paused. It is targeted for postcopy network
failure recovery.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 migration/migration.c | 2 ++
 qapi-schema.json      | 5 ++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/migration/migration.c b/migration/migration.c
index 92bf9b8..f6130db 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -470,6 +470,7 @@ static bool migration_is_setup_or_active(int state)
     switch (state) {
     case MIGRATION_STATUS_ACTIVE:
     case MIGRATION_STATUS_POSTCOPY_ACTIVE:
+    case MIGRATION_STATUS_POSTCOPY_PAUSED:
     case MIGRATION_STATUS_SETUP:
         return true;
 
@@ -545,6 +546,7 @@ MigrationInfo *qmp_query_migrate(Error **errp)
     case MIGRATION_STATUS_ACTIVE:
     case MIGRATION_STATUS_CANCELLING:
     case MIGRATION_STATUS_POSTCOPY_ACTIVE:
+    case MIGRATION_STATUS_POSTCOPY_PAUSED:
          /* TODO add some postcopy stats */
         info->has_status = true;
         info->has_total_time = true;
diff --git a/qapi-schema.json b/qapi-schema.json
index 802ea53..368b592 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -667,6 +667,8 @@
 #
 # @postcopy-active: like active, but now in postcopy mode. (since 2.5)
 #
+# @postcopy-paused: during postcopy but paused. (since 2.11)
+#
 # @completed: migration is finished.
 #
 # @failed: some error occurred during migration process.
@@ -679,7 +681,8 @@
 ##
 { 'enum': 'MigrationStatus',
   'data': [ 'none', 'setup', 'cancelling', 'cancelled',
-            'active', 'postcopy-active', 'completed', 'failed', 'colo' ] }
+            'active', 'postcopy-active', 'postcopy-paused',
+            'completed', 'failed', 'colo' ] }
 
 ##
 # @MigrationInfo:
-- 
2.7.4