From: Peter Xu Date: Wed, 27 Jun 2018 13:22:43 +0000 (+0800) Subject: migration: delay postcopy paused state X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=eed1cc7866ae35bd28926d75447dd6076bd6bb96;p=qemu.git migration: delay postcopy paused state Before this patch we firstly setup the postcopy-paused state then we clean up the QEMUFile handles. That can be racy if there is a very fast "migrate-recover" command running in parallel. Fix that up. Reported-by: Peter Maydell Reviewed-by: Juan Quintela Signed-off-by: Peter Xu Message-Id: <20180627132246.5576-2-peterx@redhat.com> Signed-off-by: Dr. David Alan Gilbert --- diff --git a/migration/savevm.c b/migration/savevm.c index c2f34ffc7c..851d74e8b6 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2194,9 +2194,6 @@ static bool postcopy_pause_incoming(MigrationIncomingState *mis) /* Clear the triggered bit to allow one recovery */ mis->postcopy_recover_triggered = false; - migrate_set_state(&mis->state, MIGRATION_STATUS_POSTCOPY_ACTIVE, - MIGRATION_STATUS_POSTCOPY_PAUSED); - assert(mis->from_src_file); qemu_file_shutdown(mis->from_src_file); qemu_fclose(mis->from_src_file); @@ -2209,6 +2206,9 @@ static bool postcopy_pause_incoming(MigrationIncomingState *mis) mis->to_src_file = NULL; qemu_mutex_unlock(&mis->rp_mutex); + migrate_set_state(&mis->state, MIGRATION_STATUS_POSTCOPY_ACTIVE, + MIGRATION_STATUS_POSTCOPY_PAUSED); + /* Notify the fault thread for the invalidated file handle */ postcopy_fault_thread_notify(mis);