summary refs log tree commit diff stats
diff options
context:
space:
mode:
authorPeter Xu <peterx@redhat.com>2021-09-22 12:20:07 -0400
committerJuan Quintela <quintela@redhat.com>2021-11-01 22:56:43 +0100
commit4c170330aae4a4ed75c3a8638b7d4c5d9f365244 (patch)
treefdd88259b76fa72d61e1197f5c8fc577f9d030e1
parent0e21bf24608b801bcdf6057f47808613061ecbe3 (diff)
downloadfocaccia-qemu-4c170330aae4a4ed75c3a8638b7d4c5d9f365244.tar.gz
focaccia-qemu-4c170330aae4a4ed75c3a8638b7d4c5d9f365244.zip
migration: Make migration blocker work for snapshots too
save_snapshot() checks migration blocker, which looks sane.  At the meantime we
should also teach the blocker add helper to fail if during a snapshot, just
like for migrations.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
-rw-r--r--migration/migration.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/migration/migration.c b/migration/migration.c
index 9172686b89..e81e473f5a 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -2058,15 +2058,16 @@ int migrate_add_blocker(Error *reason, Error **errp)
         return -EACCES;
     }
 
-    if (migration_is_idle()) {
-        migration_blockers = g_slist_prepend(migration_blockers, reason);
-        return 0;
+    /* Snapshots are similar to migrations, so check RUN_STATE_SAVE_VM too. */
+    if (runstate_check(RUN_STATE_SAVE_VM) || !migration_is_idle()) {
+        error_propagate_prepend(errp, error_copy(reason),
+                                "disallowing migration blocker "
+                                "(migration/snapshot in progress) for: ");
+        return -EBUSY;
     }
 
-    error_propagate_prepend(errp, error_copy(reason),
-                            "disallowing migration blocker "
-                            "(migration in progress) for: ");
-    return -EBUSY;
+    migration_blockers = g_slist_prepend(migration_blockers, reason);
+    return 0;
 }
 
 void migrate_del_blocker(Error *reason)