From 92c932de6c4a2b25826201e9d0740207136953c6 Mon Sep 17 00:00:00 2001 From: Lukas Straub Date: Mon, 11 May 2020 13:10:55 +0200 Subject: migration/colo.c: Relaunch failover even if there was an error If vmstate_loading is true, secondary_vm_do_failover will set failover status to FAILOVER_STATUS_RELAUNCH and return success without initiating failover. However, if there is an error during the vmstate_loading section, failover isn't relaunched. Instead we then wait for failover on colo_incoming_sem. Fix this by relaunching failover even if there was an error. Also, to make this work properly, set vmstate_loading to false when returning during the vmstate_loading section. Signed-off-by: Lukas Straub Message-Id: Reviewed-by: zhanghailiang Signed-off-by: Dr. David Alan Gilbert --- migration/colo.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/migration/colo.c b/migration/colo.c index 4105999634..59639f519f 100644 --- a/migration/colo.c +++ b/migration/colo.c @@ -752,6 +752,7 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis, ret = qemu_load_device_state(fb); if (ret < 0) { error_setg(errp, "COLO: load device state failed"); + vmstate_loading = false; qemu_mutex_unlock_iothread(); return; } @@ -760,6 +761,7 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis, replication_get_error_all(&local_err); if (local_err) { error_propagate(errp, local_err); + vmstate_loading = false; qemu_mutex_unlock_iothread(); return; } @@ -768,6 +770,7 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis, replication_do_checkpoint_all(&local_err); if (local_err) { error_propagate(errp, local_err); + vmstate_loading = false; qemu_mutex_unlock_iothread(); return; } @@ -779,6 +782,7 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis, if (local_err) { error_propagate(errp, local_err); + vmstate_loading = false; qemu_mutex_unlock_iothread(); return; } @@ -789,9 +793,6 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis, qemu_mutex_unlock_iothread(); if (failover_get_state() == FAILOVER_STATUS_RELAUNCH) { - failover_set_state(FAILOVER_STATUS_RELAUNCH, - FAILOVER_STATUS_NONE); - failover_request_active(NULL); return; } @@ -890,6 +891,14 @@ void *colo_process_incoming_thread(void *opaque) error_report_err(local_err); break; } + + if (failover_get_state() == FAILOVER_STATUS_RELAUNCH) { + failover_set_state(FAILOVER_STATUS_RELAUNCH, + FAILOVER_STATUS_NONE); + failover_request_active(NULL); + break; + } + if (failover_get_state() != FAILOVER_STATUS_NONE) { error_report("failover request"); break; @@ -897,8 +906,6 @@ void *colo_process_incoming_thread(void *opaque) } out: - vmstate_loading = false; - /* * There are only two reasons we can get here, some error happened * or the user triggered failover. -- cgit v1.2.3