From patchwork Mon May 8 04:55:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Sam Li X-Patchwork-Id: 1778240 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20221208 header.b=kWiVqsDQ; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4QF8DN655tz20fl for ; Mon, 8 May 2023 14:57:40 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pvsuy-0001C6-Rr; Mon, 08 May 2023 00:56:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pvsux-0001BO-06; Mon, 08 May 2023 00:56:11 -0400 Received: from mail-pl1-x632.google.com ([2607:f8b0:4864:20::632]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pvsuv-0005YN-2K; Mon, 08 May 2023 00:56:10 -0400 Received: by mail-pl1-x632.google.com with SMTP id d9443c01a7336-1aaea3909d1so38092325ad.2; Sun, 07 May 2023 21:56:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1683521767; x=1686113767; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=fAlJNERF8vxfdTc16P44twHaiCwg1Cgz55PMysdlzmA=; b=kWiVqsDQGctnDJfyQZh3VYNetbjxC1UZ9F2S8bb8+MjEMEY8fIoWajKDE0R+6JnN0v KZxNnPx6OsBsQ75Mal5Ao5TTOSRA8021P4utdpXAKM2JAZOD0NkQ/TDxxF0ZkF9MhXKs uorinC4iU8zy8lE0qE9L1DLIqKkPrLAVxgs/cLyX2WhKL3TXZzuJXa1dCglakoaiR6Vr tHPlN0aIEjX6wotIMc+qWVkw+XWN0XlstXeKnBk/8xuAth+jNnzrXNX7rkifz+WjdJGK FR8+xt6vz35OURhIcbBTcjSbLBnuz84SCBO32lpzgQqu+tEw/XTQyNab7jOdzUjom2OQ W8TQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683521767; x=1686113767; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=fAlJNERF8vxfdTc16P44twHaiCwg1Cgz55PMysdlzmA=; b=XZX76lrKgKaqoRnYtBZJZqtISMkcsYHWShTw491pqB7TKGZ5SKc679/a7/yN6iUhXf 4YfclWZaYDE2ocjDSDxHplZfEJHIqHywBdoT4XwyDJ6TmxWxkT1QpDLclJplUSgtp67d 0TBvEI7YqxTmqgenLoa42OyPWIRlpVSQwBBQiTbabdyhXSLc0tf4QWXgysFJEBUmejrO WdoLVFpc1XrYl113IwGpEJ1izn1QZn7eNPKeYyyu7pfC8/SulvuBOgyYw1KAlglwwUK6 //izi/1nZtYajP45HG68P5xb/QfVKdkdPBNLGV0Wmx4lYy7U8ybTBD22dkMo59ddHdko tI9w== X-Gm-Message-State: AC+VfDy2bDmgm9omQQPmwzvl2ALPDAm0VqvYcbGyjjhgH7mv67JUTbaB 3KxXC0N/ZFT7BK4HD8ye6kaIuMsgG2XzJNzz X-Google-Smtp-Source: ACHHUZ4ccTnPU4zRR3Y+dqeHDrgt3bYjDmHLkCdahm7uKJEGk8Izqi3VzY8qMD0iDiVeJEx615w6TQ== X-Received: by 2002:a17:902:d4c2:b0:1ac:813b:bfc0 with SMTP id o2-20020a170902d4c200b001ac813bbfc0mr1360482plg.18.1683521766638; Sun, 07 May 2023 21:56:06 -0700 (PDT) Received: from fedlinux.. ([106.84.128.239]) by smtp.gmail.com with ESMTPSA id bg12-20020a1709028e8c00b0019ef86c2574sm6007112plb.270.2023.05.07.21.56.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 07 May 2023 21:56:06 -0700 (PDT) From: Sam Li To: qemu-devel@nongnu.org Cc: Stefan Hajnoczi , qemu-block@nongnu.org, Hanna Reitz , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Paolo Bonzini , dmitry.fomichev@wdc.com, Fam Zheng , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Kevin Wolf , Thomas Huth , dlemoal@kernel.org, hare@suse.de, =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Sam Li Subject: [PATCH v20 5/8] block: add zoned BlockDriver check to block layer Date: Mon, 8 May 2023 12:55:30 +0800 Message-Id: <20230508045533.175575-6-faithilikerun@gmail.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230508045533.175575-1-faithilikerun@gmail.com> References: <20230508045533.175575-1-faithilikerun@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::632; envelope-from=faithilikerun@gmail.com; helo=mail-pl1-x632.google.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, FREEMAIL_REPLY=1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Putting zoned/non-zoned BlockDrivers on top of each other is not allowed. Signed-off-by: Sam Li Reviewed-by: Stefan Hajnoczi Reviewed-by: Hannes Reinecke Reviewed-by: Dmitry Fomichev Acked-by: Kevin Wolf Message-id: 20230324090605.28361-6-faithilikerun@gmail.com [Adjust commit message prefix as suggested by Philippe Mathieu-Daudé and clarify that the check is about zoned BlockDrivers. --Stefan] Signed-off-by: Stefan Hajnoczi --- block.c | 19 +++++++++++++++++++ block/file-posix.c | 12 ++++++++++++ block/raw-format.c | 1 + include/block/block_int-common.h | 5 +++++ 4 files changed, 37 insertions(+) diff --git a/block.c b/block.c index 5ec1a3897e..f67317c2b9 100644 --- a/block.c +++ b/block.c @@ -7967,6 +7967,25 @@ void bdrv_add_child(BlockDriverState *parent_bs, BlockDriverState *child_bs, return; } + /* + * Non-zoned block drivers do not follow zoned storage constraints + * (i.e. sequential writes to zones). Refuse mixing zoned and non-zoned + * drivers in a graph. + */ + if (!parent_bs->drv->supports_zoned_children && + child_bs->bl.zoned == BLK_Z_HM) { + /* + * The host-aware model allows zoned storage constraints and random + * write. Allow mixing host-aware and non-zoned drivers. Using + * host-aware device as a regular device. + */ + error_setg(errp, "Cannot add a %s child to a %s parent", + child_bs->bl.zoned == BLK_Z_HM ? "zoned" : "non-zoned", + parent_bs->drv->supports_zoned_children ? + "support zoned children" : "not support zoned children"); + return; + } + if (!QLIST_EMPTY(&child_bs->parents)) { error_setg(errp, "The node %s already has a parent", child_bs->node_name); diff --git a/block/file-posix.c b/block/file-posix.c index 11eaa780df..9a52ad4c65 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -776,6 +776,18 @@ static int raw_open_common(BlockDriverState *bs, QDict *options, goto fail; } } +#ifdef CONFIG_BLKZONED + /* + * The kernel page cache does not reliably work for writes to SWR zones + * of zoned block device because it can not guarantee the order of writes. + */ + if ((bs->bl.zoned != BLK_Z_NONE) && + (!(s->open_flags & O_DIRECT))) { + error_setg(errp, "The driver supports zoned devices, and it requires " + "cache.direct=on, which was not specified."); + return -EINVAL; /* No host kernel page cache */ + } +#endif if (S_ISBLK(st.st_mode)) { #ifdef __linux__ diff --git a/block/raw-format.c b/block/raw-format.c index f167448462..1a1dce8da4 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -623,6 +623,7 @@ static void raw_child_perm(BlockDriverState *bs, BdrvChild *c, BlockDriver bdrv_raw = { .format_name = "raw", .instance_size = sizeof(BDRVRawState), + .supports_zoned_children = true, .bdrv_probe = &raw_probe, .bdrv_reopen_prepare = &raw_reopen_prepare, .bdrv_reopen_commit = &raw_reopen_commit, diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h index e580ea8e38..06816a6fed 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -137,6 +137,11 @@ struct BlockDriver { */ bool is_format; + /* + * Set to true if the BlockDriver supports zoned children. + */ + bool supports_zoned_children; + /* * Drivers not implementing bdrv_parse_filename nor bdrv_open should have * this field set to true, except ones that are defined only by their