From nobody Mon Feb 9 04:59:27 2026 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 ARC-Seal: i=1; a=rsa-sha256; t=1562191654; cv=none; d=zoho.com; s=zohoarc; b=YJPwy3F/3v8CbFGHLyM4TZ1I6jKbBm8E7D8l/tCeQbWUeegoleJUcH2blnCGZOAnjXBghyw6VZ3kkNR3ajKpsEdzsf/1iLjxs1miFItSC7IuHQ3/i+JvqYBVWPt2YsAB+q5Ti87VFeDeuG5JSkDttau341i58bhnjIUC0U2ZHDs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1562191654; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=gogpr5p2srdWxh28eeYofiAj0w4j8bbwLkkvXpeCr4k=; b=dx9tisg7/8fDsMB7yH5XzqJZWpIIJjg10dF4azdsJdubNy1zEdHAMmiulnQwQiEtFHYDr48GT92CkCw6nxm3T9UkaU5gnJEzLfcfK8ZMcnOqW/8TVJEge1NOkQMcPS7ZtrRbKRnxOZhdrOe+LpZWPMIFsG7u8kzcH6yJiuGrjS8= ARC-Authentication-Results: i=1; mx.zoho.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 header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (209.51.188.17 [209.51.188.17]) by mx.zohomail.com with SMTPS id 1562191654243926.970143326452; Wed, 3 Jul 2019 15:07:34 -0700 (PDT) Received: from localhost ([::1]:41236 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hinPU-00013P-7d for importer@patchew.org; Wed, 03 Jul 2019 18:07:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45941) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hinEQ-00055O-53 for qemu-devel@nongnu.org; Wed, 03 Jul 2019 17:56:03 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hinEO-0003hp-TN for qemu-devel@nongnu.org; Wed, 03 Jul 2019 17:56:02 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47500) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hinEM-0003fh-5A; Wed, 03 Jul 2019 17:55:58 -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 mx1.redhat.com (Postfix) with ESMTPS id 7110C308330D; Wed, 3 Jul 2019 21:55:57 +0000 (UTC) Received: from probe.redhat.com (ovpn-123-117.rdu2.redhat.com [10.10.123.117]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3860A52737; Wed, 3 Jul 2019 21:55:52 +0000 (UTC) From: John Snow To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Wed, 3 Jul 2019 17:55:26 -0400 Message-Id: <20190703215542.16123-3-jsnow@redhat.com> In-Reply-To: <20190703215542.16123-1-jsnow@redhat.com> References: <20190703215542.16123-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Wed, 03 Jul 2019 21:55:57 +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 v2 02/18] drive-backup: create do_backup_common 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: Kevin Wolf , Fam Zheng , vsementsov@virtuozzo.com, Juan Quintela , John Snow , Xie Changlong , Markus Armbruster , "Dr. David Alan Gilbert" , Stefan Hajnoczi , Wen Congyang , Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Create a common core that comprises the actual meat of what the backup API boundary needs to do, and then switch drive-backup to use it. Questions: - do_drive_backup now acquires and releases the aio_context in addition to do_backup_common doing the same. Can I drop this from drive_backup? Signed-off-by: John Snow Reviewed-by: Max Reitz --- blockdev.c | 138 ++++++++++++++++++++++++++++++++--------------------- 1 file changed, 83 insertions(+), 55 deletions(-) diff --git a/blockdev.c b/blockdev.c index 4d141e9a1f..5fd663a7e5 100644 --- a/blockdev.c +++ b/blockdev.c @@ -3425,6 +3425,86 @@ out: aio_context_release(aio_context); } =20 +static BlockJob *do_backup_common(BackupCommon *backup, + BlockDriverState *target_bs, + JobTxn *txn, Error **errp) +{ + BlockDriverState *bs; + BlockJob *job =3D NULL; + BdrvDirtyBitmap *bmap =3D NULL; + AioContext *aio_context; + Error *local_err =3D NULL; + int job_flags =3D JOB_DEFAULT; + int ret; + + if (!backup->has_speed) { + backup->speed =3D 0; + } + if (!backup->has_on_source_error) { + backup->on_source_error =3D BLOCKDEV_ON_ERROR_REPORT; + } + if (!backup->has_on_target_error) { + backup->on_target_error =3D BLOCKDEV_ON_ERROR_REPORT; + } + if (!backup->has_job_id) { + backup->job_id =3D NULL; + } + if (!backup->has_auto_finalize) { + backup->auto_finalize =3D true; + } + if (!backup->has_auto_dismiss) { + backup->auto_dismiss =3D true; + } + if (!backup->has_compress) { + backup->compress =3D false; + } + + bs =3D bdrv_lookup_bs(backup->device, backup->device, errp); + if (!bs) { + return NULL; + } + + aio_context =3D bdrv_get_aio_context(bs); + aio_context_acquire(aio_context); + + ret =3D bdrv_try_set_aio_context(target_bs, aio_context, errp); + if (ret < 0) { + bdrv_unref(target_bs); + goto out; + } + + if (backup->has_bitmap) { + bmap =3D bdrv_find_dirty_bitmap(bs, backup->bitmap); + if (!bmap) { + error_setg(errp, "Bitmap '%s' could not be found", backup->bit= map); + goto out; + } + if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_DEFAULT, errp)) { + goto out; + } + } + + if (!backup->auto_finalize) { + job_flags |=3D JOB_MANUAL_FINALIZE; + } + if (!backup->auto_dismiss) { + job_flags |=3D JOB_MANUAL_DISMISS; + } + + job =3D backup_job_create(backup->job_id, bs, target_bs, backup->speed, + backup->sync, bmap, backup->compress, + backup->on_source_error, backup->on_target_err= or, + job_flags, NULL, NULL, txn, &local_err); + if (local_err !=3D NULL) { + error_propagate(errp, local_err); + goto out; + } + +out: + aio_context_release(aio_context); + return job; +} + static BlockJob *do_drive_backup(DriveBackup *backup, JobTxn *txn, Error **errp) { @@ -3432,39 +3512,16 @@ static BlockJob *do_drive_backup(DriveBackup *backu= p, JobTxn *txn, BlockDriverState *target_bs; BlockDriverState *source =3D NULL; BlockJob *job =3D NULL; - BdrvDirtyBitmap *bmap =3D NULL; AioContext *aio_context; QDict *options =3D NULL; Error *local_err =3D NULL; - int flags, job_flags =3D JOB_DEFAULT; + int flags; int64_t size; bool set_backing_hd =3D false; - int ret; =20 - if (!backup->has_speed) { - backup->speed =3D 0; - } - if (!backup->has_on_source_error) { - backup->on_source_error =3D BLOCKDEV_ON_ERROR_REPORT; - } - if (!backup->has_on_target_error) { - backup->on_target_error =3D BLOCKDEV_ON_ERROR_REPORT; - } if (!backup->has_mode) { backup->mode =3D NEW_IMAGE_MODE_ABSOLUTE_PATHS; } - if (!backup->has_job_id) { - backup->job_id =3D NULL; - } - if (!backup->has_auto_finalize) { - backup->auto_finalize =3D true; - } - if (!backup->has_auto_dismiss) { - backup->auto_dismiss =3D true; - } - if (!backup->has_compress) { - backup->compress =3D false; - } =20 bs =3D bdrv_lookup_bs(backup->device, backup->device, errp); if (!bs) { @@ -3541,12 +3598,6 @@ static BlockJob *do_drive_backup(DriveBackup *backup= , JobTxn *txn, goto out; } =20 - ret =3D bdrv_try_set_aio_context(target_bs, aio_context, errp); - if (ret < 0) { - bdrv_unref(target_bs); - goto out; - } - if (set_backing_hd) { bdrv_set_backing_hd(target_bs, source, &local_err); if (local_err) { @@ -3554,31 +3605,8 @@ static BlockJob *do_drive_backup(DriveBackup *backup= , JobTxn *txn, } } =20 - if (backup->has_bitmap) { - bmap =3D bdrv_find_dirty_bitmap(bs, backup->bitmap); - if (!bmap) { - error_setg(errp, "Bitmap '%s' could not be found", backup->bit= map); - goto unref; - } - if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_DEFAULT, errp)) { - goto unref; - } - } - if (!backup->auto_finalize) { - job_flags |=3D JOB_MANUAL_FINALIZE; - } - if (!backup->auto_dismiss) { - job_flags |=3D JOB_MANUAL_DISMISS; - } - - job =3D backup_job_create(backup->job_id, bs, target_bs, backup->speed, - backup->sync, bmap, backup->compress, - backup->on_source_error, backup->on_target_err= or, - job_flags, NULL, NULL, txn, &local_err); - if (local_err !=3D NULL) { - error_propagate(errp, local_err); - goto unref; - } + job =3D do_backup_common(qapi_DriveBackup_base(backup), + target_bs, txn, errp); =20 unref: bdrv_unref(target_bs); --=20 2.21.0