From nobody Mon Feb 9 08:57:32 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; 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 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=virtuozzo.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1530286390348850.505855652305; Fri, 29 Jun 2018 08:33:10 -0700 (PDT) Received: from localhost ([::1]:42981 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fYvOX-0006v4-Hk for importer@patchew.org; Fri, 29 Jun 2018 11:33:09 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40082) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fYv7U-0001G3-Q1 for qemu-devel@nongnu.org; Fri, 29 Jun 2018 11:15:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fYv7R-0006Ay-IO for qemu-devel@nongnu.org; Fri, 29 Jun 2018 11:15:32 -0400 Received: from relay.sw.ru ([185.231.240.75]:44520) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fYv7R-00063B-9M; Fri, 29 Jun 2018 11:15:29 -0400 Received: from vz-out.virtuozzo.com ([185.231.240.5] helo=kvm.sw.ru) by relay.sw.ru with esmtp (Exim 4.90_1) (envelope-from ) id 1fYv7N-0003YF-6r; Fri, 29 Jun 2018 18:15:25 +0300 From: Vladimir Sementsov-Ogievskiy To: qemu-devel@nongnu.org, qemu-block@nongnu.org Date: Fri, 29 Jun 2018 18:15:22 +0300 Message-Id: <20180629151524.138542-2-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20180629151524.138542-1-vsementsov@virtuozzo.com> References: <20180629151524.138542-1-vsementsov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 Subject: [Qemu-devel] [PATCH v2 1/3] blockdev-backup: enable non-root nodes for backup source 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: , Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, famz@redhat.com, armbru@redhat.com, mreitz@redhat.com, den@openvz.org, jsnow@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This is needed to implement image-fleecing scheme, when we create a temporary node, mark our active node to be backing for the temp, and start backup(sync=3Dnone) from active node to the temp node. Temp node then represents a kind of snapshot and may be used for external backup through NBD. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Eric Blake Reviewed-by: John Snow --- blockdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/blockdev.c b/blockdev.c index 58d7570932..72f5347df5 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1859,7 +1859,7 @@ static void blockdev_backup_prepare(BlkActionState *c= ommon, Error **errp) assert(common->action->type =3D=3D TRANSACTION_ACTION_KIND_BLOCKDEV_BA= CKUP); backup =3D common->action->u.blockdev_backup.data; =20 - bs =3D qmp_get_root_bs(backup->device, errp); + bs =3D bdrv_lookup_bs(backup->device, backup->device, errp); if (!bs) { return; } @@ -3517,7 +3517,7 @@ BlockJob *do_blockdev_backup(BlockdevBackup *backup, = JobTxn *txn, backup->compress =3D false; } =20 - bs =3D qmp_get_root_bs(backup->device, errp); + bs =3D bdrv_lookup_bs(backup->device, backup->device, errp); if (!bs) { return NULL; } --=20 2.11.1