From nobody Sun Apr 28 00:16:23 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1550606435716212.5682309701134; Tue, 19 Feb 2019 12:00:35 -0800 (PST) Received: from localhost ([127.0.0.1]:54364 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gwBZ9-00080Q-Q1 for importer@patchew.org; Tue, 19 Feb 2019 15:00:31 -0500 Received: from eggs.gnu.org ([209.51.188.92]:45976) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gwBYO-0007cR-CD for qemu-devel@nongnu.org; Tue, 19 Feb 2019 14:59:45 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gwBYM-0000TM-I7 for qemu-devel@nongnu.org; Tue, 19 Feb 2019 14:59:43 -0500 Received: from mx1.redhat.com ([209.132.183.28]:49726) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gwBYL-0000R0-QL for qemu-devel@nongnu.org; Tue, 19 Feb 2019 14:59:42 -0500 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 46F753DFCD for ; Tue, 19 Feb 2019 19:59:32 +0000 (UTC) Received: from dgilbert-t580.localhost (unknown [10.36.118.35]) by smtp.corp.redhat.com (Postfix) with ESMTP id 47E1B1001944; Tue, 19 Feb 2019 19:59:30 +0000 (UTC) From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, quintela@redhat.com, peterx@redhat.com Date: Tue, 19 Feb 2019 19:59:28 +0000 Message-Id: <20190219195928.12289-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Tue, 19 Feb 2019 19:59:32 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH] migration: Fix cancel state X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: "Dr. David Alan Gilbert" During a cancelled migration there's a race where the fd can go into an error state before we get back around the migration loop and migration_detect_error transitions from cancelling->failed. Check for cancelled/cancelling and don't change the state. Red Hat bug: https://bugzilla.redhat.com/show_bug.cgi?id=3D1608649 Fixes: b23c2ade250 Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Juan Quintela Reviewed-by: Peter Xu --- migration/migration.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index c39d3054ec..e44f77af02 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -2911,6 +2911,13 @@ static MigThrError postcopy_pause(MigrationState *s) static MigThrError migration_detect_error(MigrationState *s) { int ret; + int state =3D s->state; + + if (state =3D=3D MIGRATION_STATUS_CANCELLING || + state =3D=3D MIGRATION_STATUS_CANCELLED) { + /* End the migration, but don't set the state to failed */ + return MIG_THR_ERR_FATAL; + } =20 /* Try to detect any file errors */ ret =3D qemu_file_get_error(s->to_dst_file); @@ -2920,7 +2927,7 @@ static MigThrError migration_detect_error(MigrationSt= ate *s) return MIG_THR_ERR_NONE; } =20 - if (s->state =3D=3D MIGRATION_STATUS_POSTCOPY_ACTIVE && ret =3D=3D -EI= O) { + if (state =3D=3D MIGRATION_STATUS_POSTCOPY_ACTIVE && ret =3D=3D -EIO) { /* * For postcopy, we allow the network to be down for a * while. After that, it can be continued by a @@ -2932,7 +2939,7 @@ static MigThrError migration_detect_error(MigrationSt= ate *s) * For precopy (or postcopy with error outside IO), we fail * with no time. */ - migrate_set_state(&s->state, s->state, MIGRATION_STATUS_FAILED); + migrate_set_state(&s->state, state, MIGRATION_STATUS_FAILED); trace_migration_thread_file_err(); =20 /* Time to stop the migration, now. */ --=20 2.20.1