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Fri, 09 Jul 2021 08:52:01 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-499-Tzhhfn1rPbWbj9E3tzSnjg-1; Fri, 09 Jul 2021 08:51:56 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B8A9E362FB; Fri, 9 Jul 2021 12:51:55 +0000 (UTC) Received: from merkur.redhat.com (ovpn-113-203.ams2.redhat.com [10.36.113.203]) by smtp.corp.redhat.com (Postfix) with ESMTP id C698560843; Fri, 9 Jul 2021 12:51:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1625835118; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1Oa33kb0ChKLxUkuz+ELX45fYSNMxN2cB0tfcg9tRRA=; b=RigVYpNYj5JPFUbUWVrvBvKszuAhXTbL/n/LCwXgyFXy9/K6T1mLILAkynm9pq+idiVzc3 1cjqQcpAESZPCyC7uABnPWzd9ud7ThE1HDe/WJ+XTBxp1cxZYDE3eOrlSIRtqaSoGaWGxk B2bFUGdzcWHljfHe7dKRXuerSNPk2Rs= X-MC-Unique: Tzhhfn1rPbWbj9E3tzSnjg-1 From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PULL 19/28] blockdev: fix drive-backup transaction endless drained section Date: Fri, 9 Jul 2021 14:50:26 +0200 Message-Id: <20210709125035.191321-20-kwolf@redhat.com> In-Reply-To: <20210709125035.191321-1-kwolf@redhat.com> References: <20210709125035.191321-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kwolf@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.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; Received-SPF: pass client-ip=216.205.24.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.45, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1625836212821100001 Content-Type: text/plain; charset="utf-8" From: Vladimir Sementsov-Ogievskiy drive_backup_prepare() does bdrv_drained_begin() in hope that bdrv_drained_end() will be called in drive_backup_clean(). Still we need to set state->bs for this to work. That's done too late: a lot of failure paths in drive_backup_prepare() miss setting state->bs. Fix that. Fixes: 2288ccfac96281c316db942d10e3f921c1373064 Fixes: https://gitlab.com/qemu-project/qemu/-/issues/399 Signed-off-by: Vladimir Sementsov-Ogievskiy Message-Id: <20210608171852.250775-1-vsementsov@virtuozzo.com> Reviewed-by: Eric Blake Signed-off-by: Kevin Wolf --- blockdev.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/blockdev.c b/blockdev.c index f08192deda..094c085962 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1714,6 +1714,7 @@ static void drive_backup_prepare(BlkActionState *comm= on, Error **errp) aio_context =3D bdrv_get_aio_context(bs); aio_context_acquire(aio_context); =20 + state->bs =3D bs; /* Paired with .clean() */ bdrv_drained_begin(bs); =20 @@ -1813,8 +1814,6 @@ static void drive_backup_prepare(BlkActionState *comm= on, Error **errp) } } =20 - state->bs =3D bs; - state->job =3D do_backup_common(qapi_DriveBackup_base(backup), bs, target_bs, aio_context, common->block_job_txn, errp); --=20 2.31.1