diff options
| -rw-r--r-- | migration/migration.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/migration/migration.c b/migration/migration.c index 969b03cdcd..c80fc7b94c 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -743,24 +743,6 @@ static void process_incoming_migration_bh(void *opaque) trace_vmstate_downtime_checkpoint("dst-precopy-bh-enter"); - /* If capability late_block_activate is set: - * Only fire up the block code now if we're going to restart the - * VM, else 'cont' will do it. - * This causes file locking to happen; so we don't want it to happen - * unless we really are starting the VM. - */ - if (!migrate_late_block_activate() || - (autostart && runstate_is_live(migration_get_target_runstate()))) { - /* Make sure all file formats throw away their mutable metadata. - * If we get an error here, just don't restart the VM yet. */ - bdrv_activate_all(&local_err); - if (local_err) { - error_report_err(local_err); - local_err = NULL; - autostart = false; - } - } - /* * This must happen after all error conditions are dealt with and * we're sure the VM is going to be running on this host. @@ -775,7 +757,25 @@ static void process_incoming_migration_bh(void *opaque) if (runstate_is_live(migration_get_target_runstate())) { if (autostart) { - vm_start(); + /* + * Block activation is always delayed until VM starts, either + * here (which means we need to start the dest VM right now..), + * or until qmp_cont() later. + * + * We used to have cap 'late-block-activate' but now we do this + * unconditionally, as it has no harm but only benefit. E.g., + * it's not part of migration ABI on the time of disk activation. + * + * Make sure all file formats throw away their mutable + * metadata. If error, don't restart the VM yet. + */ + bdrv_activate_all(&local_err); + if (local_err) { + error_report_err(local_err); + local_err = NULL; + } else { + vm_start(); + } } else { runstate_set(RUN_STATE_PAUSED); } |