From patchwork Mon Feb 22 09:25:13 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 8373761 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A25A6C0553 for ; Mon, 22 Feb 2016 09:26:29 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DD75820328 for ; Mon, 22 Feb 2016 09:26:28 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3E9AB2025A for ; Mon, 22 Feb 2016 09:26:28 +0000 (UTC) Received: from localhost ([::1]:47986 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXml9-0007pR-Li for patchwork-qemu-devel@patchwork.kernel.org; Mon, 22 Feb 2016 04:26:27 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52118) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXmk7-0006br-K2 for qemu-devel@nongnu.org; Mon, 22 Feb 2016 04:25:24 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aXmk6-0008GI-G7 for qemu-devel@nongnu.org; Mon, 22 Feb 2016 04:25:23 -0500 Received: from mx1.redhat.com ([209.132.183.28]:41937) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXmk0-0008Es-FU; Mon, 22 Feb 2016 04:25:16 -0500 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (Postfix) with ESMTPS id 19E1D80518; Mon, 22 Feb 2016 09:25:16 +0000 (UTC) Received: from noname.str.redhat.com. (dhcp-192-197.str.redhat.com [10.33.192.197]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u1M9PEUJ018730; Mon, 22 Feb 2016 04:25:15 -0500 From: Kevin Wolf To: qemu-block@nongnu.org Date: Mon, 22 Feb 2016 10:25:13 +0100 Message-Id: <1456133113-15298-1-git-send-email-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: kwolf@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org Subject: [Qemu-devel] [PATCH] block migration: Activate image on destination before writing to it X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When using 'migrate -b', we must make sure to take ownership of the image before writing to it. Otherwise metadata would be thrown away on migration completion; this was caught by the assertions introduced in commit 09e0c771. Reported-by: Paolo Bonzini Signed-off-by: Kevin Wolf Reviewed-by: Stefan Hajnoczi --- migration/block.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/migration/block.c b/migration/block.c index a444058..3a8330a 100644 --- a/migration/block.c +++ b/migration/block.c @@ -786,6 +786,7 @@ static int block_load(QEMUFile *f, void *opaque, int version_id) int64_t addr; BlockDriverState *bs, *bs_prev = NULL; BlockBackend *blk; + Error *local_err = NULL; uint8_t *buf; int64_t total_sectors = 0; int nr_sectors; @@ -824,6 +825,12 @@ static int block_load(QEMUFile *f, void *opaque, int version_id) device_name); return -EINVAL; } + + bdrv_invalidate_cache(bs, &local_err); + if (local_err) { + error_report_err(local_err); + return -EINVAL; + } } if (total_sectors - addr < BDRV_SECTORS_PER_DIRTY_CHUNK) {