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-rw-r--r--block/parallels.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/block/parallels.c b/block/parallels.c
index d026ce9e2f..6b46623241 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -1363,9 +1363,12 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
bitmap_new(DIV_ROUND_UP(s->header_size, s->bat_dirty_block));
/* Disable migration until bdrv_activate method is added */
+ bdrv_graph_rdlock_main_loop();
error_setg(&s->migration_blocker, "The Parallels format used by node '%s' "
"does not support live migration",
bdrv_get_device_or_node_name(bs));
+ bdrv_graph_rdunlock_main_loop();
+
ret = migrate_add_blocker(s->migration_blocker, errp);
if (ret < 0) {
error_setg(errp, "Migration blocker error");