From patchwork Mon Nov 27 04:37:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Li X-Patchwork-Id: 13469049 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 64A78C07D59 for ; Mon, 27 Nov 2023 04:37:56 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r7TN5-0000bM-4m; Sun, 26 Nov 2023 23:37:23 -0500 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 1r7TN0-0000aY-FJ; Sun, 26 Nov 2023 23:37:18 -0500 Received: from mail-oi1-x229.google.com ([2607:f8b0:4864:20::229]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1r7TMz-0001GU-0q; Sun, 26 Nov 2023 23:37:18 -0500 Received: by mail-oi1-x229.google.com with SMTP id 5614622812f47-3b58d96a3bbso2317347b6e.1; Sun, 26 Nov 2023 20:37:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701059834; x=1701664634; darn=nongnu.org; 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=VOgRNpZvdVvAGbxkTra1OPfsf10qYyzqF/NLqWPBLM4=; b=BxIAcsAscwFHBlcT00I6aVl0CemKvLcf7TdoDceymCYRcv4mUI++WYUJGgFBfOMN0q 4P5O1HoZs7A4w7u25bY8mBLLFA9P7swJABRh41Au6hNFtVYiuapRjS2ic7lYg3+FInL3 cOTiXZNFSrrT51Kc816B2ABw5hoHQlWK4C8/XDPvi4CffwjO2ArPS4RuiLcbG32wwqfT fJc51gq47pOy9JCilTL+F8rObonjZU4Ri2ZIcFWh4ht4zckdlw8RaQZXty/IPs9oYD3z zbW83ircbHLVOQUlupAhdlZWS2CXTGa32Ufc4akNrKrIUSAGtLTjff6llWfcxijtnqu/ 2Q8A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701059834; x=1701664634; 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=VOgRNpZvdVvAGbxkTra1OPfsf10qYyzqF/NLqWPBLM4=; b=GO2hwkD4Cdw3Xm9GFQHf4vDtnIBwSHzgy5c5hblzDg7X0mI6ofFo6KXBP3Y4hsysQ/ 6THAY9ekLSVHE6DNa5s9m2p2G3PEuAi0ySCxMJtsY6PoHxalvSdMKoLEsvMsqFszQa6M KPeh4RNBvQv9qfPcJFDwXOEvLOy8pkI/FurpllZtU+CDVztaGPMWtvSeFgjTH7GYzCig ROH9AOMe8Ux3aQQYx3qDbCBvS1/ZAX5soZaao/ffljVHqyTEkF2eRUumL85AOzycx0rO UVgEPdZ44vaB399a45F4aVJdPcqjPYmWlGBGL4Sif3Ovo5lnZk/FYW3dxnzL5iZni7lj cnzg== X-Gm-Message-State: AOJu0Yz6Op/jBLB8tGCjRqFA3RDk5VCusYZTMMbNIZYQb0IgM1UtJWNK vNSaBIhXbT3WWtL1CazLXf8SUpASCk+v6z52 X-Google-Smtp-Source: AGHT+IEW/qYf3rdBaZAauHJ2jDhFts8YlnNFcBKCO32b6n/JUE0LyXb1Ik9dhgUL0YmUIQA3PWr11w== X-Received: by 2002:a05:6808:13d5:b0:3b2:e577:7344 with SMTP id d21-20020a05680813d500b003b2e5777344mr14869031oiw.38.1701059834019; Sun, 26 Nov 2023 20:37:14 -0800 (PST) Received: from fedlinux.. ([106.84.128.244]) by smtp.gmail.com with ESMTPSA id u15-20020a62ed0f000000b006c4d86a259csm6280070pfh.28.2023.11.26.20.37.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Nov 2023 20:37:13 -0800 (PST) From: Sam Li To: qemu-devel@nongnu.org Cc: dmitry.fomichev@wdc.com, qemu-block@nongnu.org, Kevin Wolf , dlemoal@kernel.org, hare@suse.de, Hanna Reitz , stefanha@redhat.com, Eric Blake , Markus Armbruster , Sam Li Subject: [PATCH v6 1/4] docs/qcow2: add the zoned format feature Date: Mon, 27 Nov 2023 12:37:00 +0800 Message-Id: <20231127043703.49489-2-faithilikerun@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231127043703.49489-1-faithilikerun@gmail.com> References: <20231127043703.49489-1-faithilikerun@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::229; envelope-from=faithilikerun@gmail.com; helo=mail-oi1-x229.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add the specs for the zoned format feature of the qcow2 driver. The qcow2 file then can emulate real zoned devices, either passed through by virtio-blk device or NVMe ZNS drive to the guest given zoned information. Signed-off-by: Sam Li Reviewed-by: Stefan Hajnoczi --- docs/system/qemu-block-drivers.rst.inc | 35 ++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/docs/system/qemu-block-drivers.rst.inc b/docs/system/qemu-block-drivers.rst.inc index 105cb9679c..955fea271e 100644 --- a/docs/system/qemu-block-drivers.rst.inc +++ b/docs/system/qemu-block-drivers.rst.inc @@ -172,6 +172,41 @@ This section describes each format and the options that are supported for it. filename`` to check if the NOCOW flag is set or not (Capital 'C' is NOCOW flag). + .. option:: zone.mode + If this is set to ``host-managed``, the image is an emulated zoned + block device. This option is only valid to emulated zoned device files. + + .. option:: zone.size + + The size of a zone in bytes. The device is divided into zones of this + size with the exception of the last zone, which may be smaller. + + .. option:: zone.capacity + + The initial capacity value, in bytes, for all zones. The capacity must + be less than or equal to zone size. If the last zone is smaller, then + its capacity is capped. + + The zone capacity is per zone and may be different between zones in real + devices. QCow2 sets all zones to the same capacity. + + .. option:: zone.conventional_zones + + The number of conventional zones of the zoned device. + + .. option:: zone.max_open_zones + + The maximal allowed open zones. + + .. option:: zone.max_active_zones + + The limit of the zones with implicit open, explicit open or closed state. + + .. option:: zone.max_append_bytes + + The number of bytes in a zone append request that can be issued to the + device. It must be 512-byte aligned. + .. program:: image-formats .. option:: qed From patchwork Mon Nov 27 04:37:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Li X-Patchwork-Id: 13469051 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 975C6C4167B for ; Mon, 27 Nov 2023 04:38:40 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r7TN7-0000cC-GO; Sun, 26 Nov 2023 23:37:25 -0500 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 1r7TN6-0000by-4N; Sun, 26 Nov 2023 23:37:24 -0500 Received: from mail-oa1-x2a.google.com ([2001:4860:4864:20::2a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1r7TN3-0001Gt-8E; Sun, 26 Nov 2023 23:37:23 -0500 Received: by mail-oa1-x2a.google.com with SMTP id 586e51a60fabf-1f0f94943d9so1879174fac.2; Sun, 26 Nov 2023 20:37:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701059839; x=1701664639; darn=nongnu.org; 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=lm/6hZbLqU/akvQo+DZ6ZMjg7vY+IF0AmnxBmXwiPe4=; b=VejXBA7OLoT/LNxHjeOOcBhK0mgN4fsThDzPk9jThYFjsgyW5GdkW6ZUn+UfH9WqUC XLX8L8792lWKJIeepB13lWsah+CBWcxZ5ciCOh1+AIK5s6dnBYifkjK2nVJm07mEuy0f 0UcqZXfCXpfP27AHyTLkPJ99t12OZeix1V6DHsY5YY9QsJ2xIi4cBYWZKw6vq8p3Ubl1 ZXW0ERgM1R/sZWGQ3bMtalolKA0y2hdnc96GcVOCYeu9eBvEyM323RUdYo4HnW4Tpw0p y6kwlQD7V5wS7kmd/chkw5rZUW7SuGQEhJ3PV3RROKueJi0WPksbsVLboo+H+oUtad3i GRbQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701059839; x=1701664639; 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=lm/6hZbLqU/akvQo+DZ6ZMjg7vY+IF0AmnxBmXwiPe4=; b=v1s36g2uv+ozmilo9Vp4+VQBjHXXdQ2ZS5VRzUzSPImu9RkY9scRbYpQ392BpDLb/z rfzs5HJM9A4+DsYYiTsv81BOdmNyyb7PwLp/6524Zq0Zaady7m9kBpRaF7sz21Ec478y aZ0FjxTj8EyL7m/z1b9U1LExsGWL4AxiD3Q241efucZ2Xs9MdnhUIcFuLX+4nHLZXOa6 SzjmKi1ww/JBTsGkdWgorFL+wrqytarGgOzPi/cGIr0mdXT1DvrKJFIADl3KbEkzrPTW f7GVkAg67dXVq4ZyVBf0kaLE3TldBRoDR8GvFSCV3qaORVfVCj8iP2jNX1xpm6iTNG6f cB7g== X-Gm-Message-State: AOJu0Ywdk4NhREN05ws27gh8AUhl0QpnQ2GbvIiojiPYk0ITh0pmPW0q R6nxRQ7T1eiN87FOdReKF+nHy9bN9+hFRflR X-Google-Smtp-Source: AGHT+IGxm/T12B68VZnybtCTT0uIaoOQdsSKqFfVq1k+FYzzkSavS6hUaRZ9jNqdGwxfEC//yffKeA== X-Received: by 2002:a05:6871:5c9:b0:1fa:1ca1:577a with SMTP id v9-20020a05687105c900b001fa1ca1577amr7631884oan.41.1701059837924; Sun, 26 Nov 2023 20:37:17 -0800 (PST) Received: from fedlinux.. ([106.84.128.244]) by smtp.gmail.com with ESMTPSA id u15-20020a62ed0f000000b006c4d86a259csm6280070pfh.28.2023.11.26.20.37.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Nov 2023 20:37:17 -0800 (PST) From: Sam Li To: qemu-devel@nongnu.org Cc: dmitry.fomichev@wdc.com, qemu-block@nongnu.org, Kevin Wolf , dlemoal@kernel.org, hare@suse.de, Hanna Reitz , stefanha@redhat.com, Eric Blake , Markus Armbruster , Sam Li Subject: [PATCH v6 2/4] qcow2: add configurations for zoned format extension Date: Mon, 27 Nov 2023 12:37:01 +0800 Message-Id: <20231127043703.49489-3-faithilikerun@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231127043703.49489-1-faithilikerun@gmail.com> References: <20231127043703.49489-1-faithilikerun@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2001:4860:4864:20::2a; envelope-from=faithilikerun@gmail.com; helo=mail-oa1-x2a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org To configure the zoned format feature on the qcow2 driver, it requires settings as: the device size, zone model, zone size, zone capacity, number of conventional zones, limits on zone resources (max append bytes, max open zones, and max_active_zones). To create a qcow2 image with zoned format feature, use command like this: $path/to/qemu-img create -f qcow2 zbc.qcow2 -o size=768M -o zone.size=64M -o zone.capacity=64M -o zone.conventional_zones=0 -o zone.max_append_bytes=4096 -o zone.max_open_zones=10 -o zone.max_active_zones=12 -o zone.mode=host-managed Signed-off-by: Sam Li --- block/qcow2.c | 233 ++++++++++++++++++++++++++++++- block/qcow2.h | 36 ++++- docs/interop/qcow2.txt | 99 ++++++++++++- include/block/block_int-common.h | 13 ++ qapi/block-core.json | 63 ++++++++- 5 files changed, 440 insertions(+), 4 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index 13e032bd5e..9a92cd242c 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -73,6 +73,7 @@ typedef struct { #define QCOW2_EXT_MAGIC_CRYPTO_HEADER 0x0537be77 #define QCOW2_EXT_MAGIC_BITMAPS 0x23852875 #define QCOW2_EXT_MAGIC_DATA_FILE 0x44415441 +#define QCOW2_EXT_MAGIC_ZONED_FORMAT 0x007a6264 static int coroutine_fn qcow2_co_preadv_compressed(BlockDriverState *bs, @@ -194,6 +195,55 @@ qcow2_extract_crypto_opts(QemuOpts *opts, const char *fmt, Error **errp) return cryptoopts_qdict; } +/* + * Passing by the zoned device configurations by a zoned_header struct, check + * if the zone device options are under constraints. Return false when some + * option is invalid + */ +static inline bool +qcow2_check_zone_options(Qcow2ZonedHeaderExtension *zone_opt) +{ + if (zone_opt) { + if (zone_opt->zone_size == 0) { + error_report("Zoned extension header zone_size field " + "can not be 0"); + return false; + } + + if (zone_opt->zone_capacity > zone_opt->zone_size) { + error_report("zone capacity %" PRIu32 "B exceeds zone size " + "%" PRIu32"B", zone_opt->zone_capacity, + zone_opt->zone_size); + return false; + } + + if (zone_opt->max_active_zones > zone_opt->nr_zones) { + error_report("Max_active_zones %" PRIu32 " exceeds " + "nr_zones %" PRIu32". Set it to nr_zones.", + zone_opt->max_active_zones, zone_opt->nr_zones); + zone_opt->max_active_zones = zone_opt->nr_zones; + } + + if (zone_opt->max_open_zones > zone_opt->max_active_zones) { + error_report("Max_open_zones %" PRIu32 " exceeds " + "max_active_zones %" PRIu32". Set it to " + "max_active_zones.", + zone_opt->max_open_zones, + zone_opt->max_active_zones); + zone_opt->max_open_zones = zone_opt->max_active_zones; + } + + if (zone_opt->max_open_zones > zone_opt->nr_zones) { + error_report("Max_open_zones field can not be larger " + "than the number of zones. Set it to nr_zones."); + zone_opt->max_open_zones = zone_opt->nr_zones; + } + + return true; + } + return false; +} + /* * read qcow2 extension and fill bs * start reading from start_offset @@ -211,6 +261,7 @@ qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, uint64_t offset; int ret; Qcow2BitmapHeaderExt bitmaps_ext; + Qcow2ZonedHeaderExtension zoned_ext; if (need_update_header != NULL) { *need_update_header = false; @@ -432,6 +483,51 @@ qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, break; } + case QCOW2_EXT_MAGIC_ZONED_FORMAT: + { + if (ext.len < sizeof(zoned_ext)) { + /* Missing fields */ + error_setg(errp, "zoned_ext: len=%" PRIu32 " too small " + "(<%zu)", ext.len, sizeof(zoned_ext)); + return -EINVAL; + } + ret = bdrv_pread(bs->file, offset, ext.len, &zoned_ext, 0); + if (ret < 0) { + error_setg_errno(errp, -ret, "zoned_ext: " + "Could not read ext header"); + return ret; + } + + zoned_ext.zone_size = be32_to_cpu(zoned_ext.zone_size); + zoned_ext.zone_capacity = be32_to_cpu(zoned_ext.zone_capacity); + zoned_ext.conventional_zones = + be32_to_cpu(zoned_ext.conventional_zones); + zoned_ext.nr_zones = be32_to_cpu(zoned_ext.nr_zones); + zoned_ext.max_open_zones = be32_to_cpu(zoned_ext.max_open_zones); + zoned_ext.max_active_zones = + be32_to_cpu(zoned_ext.max_active_zones); + zoned_ext.max_append_bytes = + be32_to_cpu(zoned_ext.max_append_bytes); + s->zoned_header = zoned_ext; + + /* refuse to open broken images */ + if (zoned_ext.nr_zones != DIV_ROUND_UP(bs->total_sectors * + BDRV_SECTOR_SIZE, zoned_ext.zone_size)) { + error_setg(errp, "Zoned extension header nr_zones field " + "is wrong"); + return -EINVAL; + } + if (!qcow2_check_zone_options(&zoned_ext)) { + return -EINVAL; + } + +#ifdef DEBUG_EXT + printf("Qcow2: Got zoned format extension: " + "offset=%" PRIu32 "\n", offset); +#endif + break; + } + default: /* unknown magic - save it in case we need to rewrite the header */ /* If you add a new feature, make sure to also update the fast @@ -1968,6 +2064,15 @@ static void qcow2_refresh_limits(BlockDriverState *bs, Error **errp) } bs->bl.pwrite_zeroes_alignment = s->subcluster_size; bs->bl.pdiscard_alignment = s->cluster_size; + bs->bl.zoned = s->zoned_header.zoned; + bs->bl.nr_zones = s->zoned_header.nr_zones; + bs->bl.max_append_sectors = s->zoned_header.max_append_bytes + >> BDRV_SECTOR_BITS; + bs->bl.max_active_zones = s->zoned_header.max_active_zones; + bs->bl.max_open_zones = s->zoned_header.max_open_zones; + bs->bl.zone_size = s->zoned_header.zone_size; + bs->bl.zone_capacity = s->zoned_header.zone_capacity; + bs->bl.write_granularity = BDRV_SECTOR_SIZE; } static int GRAPH_UNLOCKED @@ -3067,6 +3172,11 @@ int qcow2_update_header(BlockDriverState *bs) .bit = QCOW2_INCOMPAT_EXTL2_BITNR, .name = "extended L2 entries", }, + { + .type = QCOW2_FEAT_TYPE_INCOMPATIBLE, + .bit = QCOW2_INCOMPAT_ZONED_FORMAT_BITNR, + .name = "zoned format", + }, { .type = QCOW2_FEAT_TYPE_COMPATIBLE, .bit = QCOW2_COMPAT_LAZY_REFCOUNTS_BITNR, @@ -3112,6 +3222,31 @@ int qcow2_update_header(BlockDriverState *bs) buflen -= ret; } + /* Zoned devices header extension */ + if (s->zoned_header.zoned == BLK_Z_HM) { + Qcow2ZonedHeaderExtension zoned_header = { + .zoned = s->zoned_header.zoned, + .zone_size = cpu_to_be32(s->zoned_header.zone_size), + .zone_capacity = cpu_to_be32(s->zoned_header.zone_capacity), + .conventional_zones = + cpu_to_be32(s->zoned_header.conventional_zones), + .nr_zones = cpu_to_be32(s->zoned_header.nr_zones), + .max_open_zones = cpu_to_be32(s->zoned_header.max_open_zones), + .max_active_zones = + cpu_to_be32(s->zoned_header.max_active_zones), + .max_append_bytes = + cpu_to_be32(s->zoned_header.max_append_bytes) + }; + ret = header_ext_add(buf, QCOW2_EXT_MAGIC_ZONED_FORMAT, + &zoned_header, sizeof(zoned_header), + buflen); + if (ret < 0) { + goto fail; + } + buf += ret; + buflen -= ret; + } + /* Keep unknown header extensions */ QLIST_FOREACH(uext, &s->unknown_header_ext, next) { ret = header_ext_add(buf, uext->magic, uext->data, uext->len, buflen); @@ -3485,6 +3620,8 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp) { BlockdevCreateOptionsQcow2 *qcow2_opts; QDict *options; + Qcow2ZoneCreateOptions *zone_struct; + Qcow2ZoneHostManaged *zone_host_managed; /* * Open the image file and write a minimal qcow2 header. @@ -3511,6 +3648,8 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp) assert(create_options->driver == BLOCKDEV_DRIVER_QCOW2); qcow2_opts = &create_options->u.qcow2; + zone_struct = create_options->u.qcow2.zone; + zone_host_managed = &create_options->u.qcow2.zone->u.host_managed; bs = bdrv_co_open_blockdev_ref(qcow2_opts->file, errp); if (bs == NULL) { @@ -3724,6 +3863,14 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp) header->incompatible_features |= cpu_to_be64(QCOW2_INCOMPAT_DATA_FILE); } + if (zone_struct->mode == QCOW2_ZONE_MODEL_HOST_MANAGED) { + /* + * The incompatible bit must be set when the zone model is + * host-managed + */ + header->incompatible_features |= + cpu_to_be64(QCOW2_INCOMPAT_ZONED_FORMAT); + } if (qcow2_opts->data_file_raw) { header->autoclear_features |= cpu_to_be64(QCOW2_AUTOCLEAR_DATA_FILE_RAW); @@ -3792,11 +3939,56 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp) } /* Set the external data file if necessary */ + BDRVQcow2State *s = blk_bs(blk)->opaque; if (data_bs) { - BDRVQcow2State *s = blk_bs(blk)->opaque; s->image_data_file = g_strdup(data_bs->filename); } + if (zone_struct->mode == QCOW2_ZONE_MODEL_HOST_MANAGED) { + if (!zone_host_managed->has_size) { + error_setg(errp, "Missing zone_size parameter"); + ret = -EINVAL; + goto out; + } + + s->zoned_header.zoned = BLK_Z_HM; + s->zoned_header.zone_size = zone_host_managed->size; + s->zoned_header.nr_zones = DIV_ROUND_UP(qcow2_opts->size, + zone_host_managed->size); + if (zone_host_managed->has_capacity) { + s->zoned_header.zone_capacity = zone_host_managed->capacity; + } else { + s->zoned_header.zone_capacity = zone_host_managed->size; + } + + if (zone_host_managed->has_conventional_zones) { + s->zoned_header.conventional_zones = + zone_host_managed->conventional_zones; + } + + if (zone_host_managed->has_max_active_zones) { + s->zoned_header.max_active_zones = + zone_host_managed->max_active_zones; + + if (zone_host_managed->has_max_open_zones) { + s->zoned_header.max_open_zones = + zone_host_managed->max_open_zones; + } else { + s->zoned_header.max_open_zones = + zone_host_managed->max_active_zones; + } + } + s->zoned_header.max_append_bytes = zone_host_managed->max_append_bytes; + + if (!qcow2_check_zone_options(&s->zoned_header)) { + s->zoned_header.zoned = BLK_Z_NONE; + ret = -EINVAL; + goto out; + } + } else { + s->zoned_header.zoned = BLK_Z_NONE; + } + /* Create a full header (including things like feature table) */ ret = qcow2_update_header(blk_bs(blk)); bdrv_graph_co_rdunlock(); @@ -3930,6 +4122,10 @@ qcow2_co_create_opts(BlockDriver *drv, const char *filename, QemuOpts *opts, { BLOCK_OPT_COMPAT_LEVEL, "version" }, { BLOCK_OPT_DATA_FILE_RAW, "data-file-raw" }, { BLOCK_OPT_COMPRESSION_TYPE, "compression-type" }, + { BLOCK_OPT_CONVENTIONAL_ZONES, "zone.conventional-zones" }, + { BLOCK_OPT_MAX_OPEN_ZONES, "zone.max-open-zones" }, + { BLOCK_OPT_MAX_ACTIVE_ZONES, "zone.max-active-zones" }, + { BLOCK_OPT_MAX_APPEND_BYTES, "zone.max-append-bytes" }, { NULL, NULL }, }; @@ -6097,6 +6293,41 @@ static QemuOptsList qcow2_create_opts = { .help = "Compression method used for image cluster " \ "compression", \ .def_value_str = "zlib" \ + }, \ + { \ + .name = BLOCK_OPT_ZONE_MODEL, \ + .type = QEMU_OPT_STRING, \ + .help = "zone model modes, mode choice: host-managed", \ + }, \ + { \ + .name = BLOCK_OPT_ZONE_SIZE, \ + .type = QEMU_OPT_SIZE, \ + .help = "zone size", \ + }, \ + { \ + .name = BLOCK_OPT_ZONE_CAPACITY, \ + .type = QEMU_OPT_SIZE, \ + .help = "zone capacity", \ + }, \ + { \ + .name = BLOCK_OPT_CONVENTIONAL_ZONES, \ + .type = QEMU_OPT_NUMBER, \ + .help = "numbers of conventional zones", \ + }, \ + { \ + .name = BLOCK_OPT_MAX_APPEND_BYTES, \ + .type = QEMU_OPT_NUMBER, \ + .help = "max append bytes", \ + }, \ + { \ + .name = BLOCK_OPT_MAX_ACTIVE_ZONES, \ + .type = QEMU_OPT_NUMBER, \ + .help = "max active zones", \ + }, \ + { \ + .name = BLOCK_OPT_MAX_OPEN_ZONES, \ + .type = QEMU_OPT_NUMBER, \ + .help = "max open zones", \ }, QCOW_COMMON_OPTIONS, { /* end of list */ } diff --git a/block/qcow2.h b/block/qcow2.h index a9e3481c6e..7f37bb4034 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -236,6 +236,27 @@ typedef struct Qcow2CryptoHeaderExtension { uint64_t length; } QEMU_PACKED Qcow2CryptoHeaderExtension; +typedef struct Qcow2ZonedHeaderExtension { + /* Zoned device attributes */ + uint8_t zoned; + uint8_t reserved[3]; + uint32_t zone_size; + uint32_t zone_capacity; + uint32_t conventional_zones; + uint32_t nr_zones; + uint32_t max_active_zones; + uint32_t max_open_zones; + uint32_t max_append_bytes; + uint64_t zonedmeta_size; + uint64_t zonedmeta_offset; +} QEMU_PACKED Qcow2ZonedHeaderExtension; + +typedef struct Qcow2ZoneListEntry { + QLIST_ENTRY(Qcow2ZoneListEntry) exp_open_zone_entry; + QLIST_ENTRY(Qcow2ZoneListEntry) imp_open_zone_entry; + QLIST_ENTRY(Qcow2ZoneListEntry) closed_zone_entry; +} Qcow2ZoneListEntry; + typedef struct Qcow2UnknownHeaderExtension { uint32_t magic; uint32_t len; @@ -256,17 +277,20 @@ enum { QCOW2_INCOMPAT_DATA_FILE_BITNR = 2, QCOW2_INCOMPAT_COMPRESSION_BITNR = 3, QCOW2_INCOMPAT_EXTL2_BITNR = 4, + QCOW2_INCOMPAT_ZONED_FORMAT_BITNR = 5, QCOW2_INCOMPAT_DIRTY = 1 << QCOW2_INCOMPAT_DIRTY_BITNR, QCOW2_INCOMPAT_CORRUPT = 1 << QCOW2_INCOMPAT_CORRUPT_BITNR, QCOW2_INCOMPAT_DATA_FILE = 1 << QCOW2_INCOMPAT_DATA_FILE_BITNR, QCOW2_INCOMPAT_COMPRESSION = 1 << QCOW2_INCOMPAT_COMPRESSION_BITNR, QCOW2_INCOMPAT_EXTL2 = 1 << QCOW2_INCOMPAT_EXTL2_BITNR, + QCOW2_INCOMPAT_ZONED_FORMAT = 1 << QCOW2_INCOMPAT_ZONED_FORMAT_BITNR, QCOW2_INCOMPAT_MASK = QCOW2_INCOMPAT_DIRTY | QCOW2_INCOMPAT_CORRUPT | QCOW2_INCOMPAT_DATA_FILE | QCOW2_INCOMPAT_COMPRESSION - | QCOW2_INCOMPAT_EXTL2, + | QCOW2_INCOMPAT_EXTL2 + | QCOW2_INCOMPAT_ZONED_FORMAT, }; /* Compatible feature bits */ @@ -422,6 +446,16 @@ typedef struct BDRVQcow2State { * is to convert the image with the desired compression type set. */ Qcow2CompressionType compression_type; + + /* States of zoned device */ + Qcow2ZonedHeaderExtension zoned_header; + QLIST_HEAD(, Qcow2ZoneListEntry) exp_open_zones; + QLIST_HEAD(, Qcow2ZoneListEntry) imp_open_zones; + QLIST_HEAD(, Qcow2ZoneListEntry) closed_zones; + Qcow2ZoneListEntry *zone_list_entries; + uint32_t nr_zones_exp_open; + uint32_t nr_zones_imp_open; + uint32_t nr_zones_closed; } BDRVQcow2State; typedef struct Qcow2COWRegion { diff --git a/docs/interop/qcow2.txt b/docs/interop/qcow2.txt index 2c4618375a..0f1938f056 100644 --- a/docs/interop/qcow2.txt +++ b/docs/interop/qcow2.txt @@ -125,7 +125,26 @@ the next fields through header_length. allows subcluster-based allocation. See the Extended L2 Entries section for more details. - Bits 5-63: Reserved (set to 0) + Bit 5: Zoned extension bit. If this bit is set then + the file is an emulated zoned device. The + zoned extension must be present. + Implementations that do not support zoned + emulation cannot open this file because it + generally only make sense to interpret the + data along with the zone information and + write pointers. + + It is unsafe when any qcow2 user without + knowing the zoned extension reads or edits + a file with the zoned extension. The write + pointer tracking can be corrupted when a + writer edits a file, like overwriting beyond + the write pointer locations. Or a reader tries + to access a file without knowing write + pointers where the software setup will cause + invalid reads. + + Bits 6-63: Reserved (set to 0) 80 - 87: compatible_features Bitmask of compatible features. An implementation can @@ -249,6 +268,7 @@ be stored. Each extension has a structure like the following: 0x23852875 - Bitmaps extension 0x0537be77 - Full disk encryption header pointer 0x44415441 - External data file name string + 0x007a6264 - Zoned extension other - Unknown header extension, can be safely ignored @@ -331,6 +351,83 @@ The fields of the bitmaps extension are: Offset into the image file at which the bitmap directory starts. Must be aligned to a cluster boundary. +== Zoned extension == + +The zoned extension must be present if the incompatible bit is set, and +omitted when the incompatible bit is clear. It contains fields for +emulating the zoned storage model (https://zonedstorage.io/). When the +zone model mode is not host-managed, it is regarded as incompatible +and reports an error to users. + +The write pointers for each zone are stored in an area called zonedmeta +clusters. It is 8 bytes per zone. The offset and size of the zonedmeta +are kept in the zoned extension header. + +The fields of the zoned extension are: + Byte 0: zoned + The bit represents the zoned model of the device. 0 is for + a non-zoned device (all other information in this header + is ignored). 1 is for a host-managed device, which only + allows for sequential writes within each zone. Other + values may be added later, the implementation must refuse + to open a device containing an unknown zone model. + + 1 - 3: Reserved, must be zero. + + 4 - 7: zone_size + Total size of each zone, in bytes. It is less than 4GB + in the qcow2 image for simplicity. The maximum zone size + of real zoned devices are 2TB. If there are usages for + emulating devices whose zone sizes are larger than 4G, + the field needs to be sized bigger then. + + The value must be power of 2. Linux currently requires + the zone size to be a power of 2 number of LBAs. Qcow2 + following this is mainly to allow emulating a real + ZNS drive configuration. It is not relevant to the cluster + size. + + 8 - 11: zone_capacity + The number of writable bytes within the zones. The bytes + between zone capacity and zone size are unusable: reads + will return 0s and writes will fail. + + A zone capacity is always smaller or equal to the zone + size. It is for emulating a real ZNS drive configuration, + which has the constraint of aligning to some hardware erase + block size. + + 12 - 15: conventional_zones + The number of conventional zones. The conventional zones + allow sequential writes and random writes. While the + sequential zones only allow sequential writes. + + 16 - 19: nr_zones + The number of zones. It is the sum of conventional zones + and sequential zones. + + 20 - 23: max_active_zones + The number of the zones that can be in the implicit open, + explicit open or closed state. + + 24 - 27: max_open_zones + The maximal number of open (implicitly open or explicitly + open) zones. + + 28 - 31: max_append_bytes + The number of bytes of a zone append request that can be + issued to the device. It must be 512-byte aligned. + + 32 - 39: zonedmeta_size + The size of zoned metadata in bytes. It contains no more + than 4GB. The zoned metadata structure is the write + pointers for each zone whose size is the number of zones + multiplied by the zone size. + + 40 - 47: zonedmeta_offset + The offset of zoned metadata structure in the contained + image, in bytes. + == Full disk encryption header pointer == The full disk encryption header must be present if, and only if, the diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h index 4e31d161c5..0d231bd1f7 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -57,6 +57,13 @@ #define BLOCK_OPT_DATA_FILE_RAW "data_file_raw" #define BLOCK_OPT_COMPRESSION_TYPE "compression_type" #define BLOCK_OPT_EXTL2 "extended_l2" +#define BLOCK_OPT_ZONE_MODEL "zone.mode" +#define BLOCK_OPT_ZONE_SIZE "zone.size" +#define BLOCK_OPT_ZONE_CAPACITY "zone.capacity" +#define BLOCK_OPT_CONVENTIONAL_ZONES "zone.conventional_zones" +#define BLOCK_OPT_MAX_APPEND_BYTES "zone.max_append_bytes" +#define BLOCK_OPT_MAX_ACTIVE_ZONES "zone.max_active_zones" +#define BLOCK_OPT_MAX_OPEN_ZONES "zone.max_open_zones" #define BLOCK_PROBE_BUF_SIZE 512 @@ -886,6 +893,12 @@ typedef struct BlockLimits { /* zone size expressed in bytes */ uint32_t zone_size; + /* + * the number of usable logical blocks within the zone, expressed + * in bytes. A zone capacity is smaller or equal to the zone size. + */ + uint32_t zone_capacity; + /* total number of zones */ uint32_t nr_zones; diff --git a/qapi/block-core.json b/qapi/block-core.json index ca390c5700..ef98dc83a0 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -5038,6 +5038,64 @@ { 'enum': 'Qcow2CompressionType', 'data': [ 'zlib', { 'name': 'zstd', 'if': 'CONFIG_ZSTD' } ] } +## +# @Qcow2ZoneModel: +# +# Zoned device model used in qcow2 image file +# +# @host-managed: host-managed model only allows sequential write over the +# device zones +# +# Since 8.2 +## +{ 'enum': 'Qcow2ZoneModel', + 'data': [ 'host-managed'] } + +## +# @Qcow2ZoneHostManaged: +# +# The host-managed zone model. It only allows sequential writes. +# +# @size: Total number of bytes within zones +# +# @capacity: The number of usable logical blocks within zones +# in bytes. A zone capacity is always smaller or equal to the +# zone size +# +# @conventional-zones: The number of conventional zones of the +# zoned device +# +# @max-open-zones: The maximal number of open zones +# +# @max-active-zones: The maximal number of zones in the implicit +# open, explicit open or closed state +# +# @max-append-bytes: The maximal number of bytes of a zone +# append request that can be issued to the device. It must be +# 512-byte aligned +# +# Since 8.2 +## +{ 'struct': 'Qcow2ZoneHostManaged', + 'data': { '*size': 'size', + '*capacity': 'size', + '*conventional-zones': 'uint32', + '*max-open-zones': 'uint32', + '*max-active-zones': 'uint32', + '*max-append-bytes': 'uint32' } } + +## +# @Qcow2ZoneCreateOptions: +# +# The zone device model for the qcow2 image. +# +# Since 8.2 +## +{ 'union': 'Qcow2ZoneCreateOptions', + 'base': { 'mode': 'Qcow2ZoneModel' }, + 'discriminator': 'mode', + 'data': { 'host-managed': 'Qcow2ZoneHostManaged' } } + ## # @BlockdevCreateOptionsQcow2: # @@ -5080,6 +5138,8 @@ # @compression-type: The image cluster compression method # (default: zlib, since 5.1) # +# @zone: @Qcow2ZoneCreateOptions. The zone device model modes (since 8.2) +# # Since: 2.12 ## { 'struct': 'BlockdevCreateOptionsQcow2', @@ -5096,7 +5156,8 @@ '*preallocation': 'PreallocMode', '*lazy-refcounts': 'bool', '*refcount-bits': 'int', - '*compression-type':'Qcow2CompressionType' } } + '*compression-type':'Qcow2CompressionType', + '*zone': 'Qcow2ZoneCreateOptions' } } ## # @BlockdevCreateOptionsQed: From patchwork Mon Nov 27 04:37:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Li X-Patchwork-Id: 13469050 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 88225C4167B for ; Mon, 27 Nov 2023 04:38:02 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r7TNB-0000d6-R0; Sun, 26 Nov 2023 23:37:29 -0500 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 1r7TNA-0000cq-Ra; Sun, 26 Nov 2023 23:37:28 -0500 Received: from mail-pf1-x42b.google.com ([2607:f8b0:4864:20::42b]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1r7TN7-0001HO-IE; Sun, 26 Nov 2023 23:37:28 -0500 Received: by mail-pf1-x42b.google.com with SMTP id d2e1a72fcca58-6cd89f2af9dso686487b3a.1; Sun, 26 Nov 2023 20:37:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701059843; x=1701664643; darn=nongnu.org; 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=Fa+Ni6FlT26bK0vEM4mKJFZhINo+ejlj+HwQ/QEMakQ=; b=KSfVtLiyIQbT1EiF7crOsPmtor6wDSknlYX26+J/TNgYKK4HV1epN6tn846FVrB1zo h8mF8M1E8BwP+wk2IRW7wVa6sOQAzhLsiRzMIsmIWXOa/2ClBBHwGpiV510DsgtarPR1 NNZdnR2Utfr0S4DDqlIpbMWxHDgW+eWUAgoOqDF9V+tmIYwK+81jZ9bJc9NSOZHIPiGI jfrKmREllaMnIQ5fBThDukIPc7Y4/LSg4X3Rf3e78GKI4W2EAfekNSrDgrhW+E+90AqV uBRe46kAX8j2hRwu2wREniFHHnv+FO2+8Wn1EgFJ3Dq0wd50kcme7QKbINvX8MZHq/2l 7YMw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701059843; x=1701664643; 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=Fa+Ni6FlT26bK0vEM4mKJFZhINo+ejlj+HwQ/QEMakQ=; b=lx3zW2R46yL39dJoFiaFveVLsQ1f8AMQ9FIZOv3yzopslyTkTtowLsVEWE6vGOxEmi OZENlDpy5MN/lI/bVoanpqbypZBVnF2+PV/Fs3I/I0FGegGsmPXmDGZSNK/dedrSBc6c vU9tB8aw6eJIoQGPgMT7Y85cG6/NrfEA0pMMn+qZYkgDLTT0PndCTVTqROwusZA4vwM9 RGvmiq0XQkmOOI5LimcUxoHap6YsaxkmyxTS/ZlfQ/oT5i5DbhEyxxnDvAK+VHF8aBBG Em07dv5LmnbtY+/FpJIZc1/CjuzYp0MgxeNMe7cVIDZWNxFXE6Dx5ue7aMLszIGPYwQg AXHw== X-Gm-Message-State: AOJu0YxwHRd/HiYUDrge64WczDQnSgRmi2w51jyZAmzaYxbNvZFomMw8 UPuplwD/gqjbYt8rSupFaGPrM67jS6PsOyzN X-Google-Smtp-Source: AGHT+IFCGXM4NMiiLXoXjKiPhuqjJyi8j6S8TXrzIjbudKsw3iDO5EtBLUShLHCgIvxpla04mde0tQ== X-Received: by 2002:a05:6a00:4091:b0:6be:319:446b with SMTP id bw17-20020a056a00409100b006be0319446bmr15371646pfb.21.1701059841988; Sun, 26 Nov 2023 20:37:21 -0800 (PST) Received: from fedlinux.. ([106.84.128.244]) by smtp.gmail.com with ESMTPSA id u15-20020a62ed0f000000b006c4d86a259csm6280070pfh.28.2023.11.26.20.37.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Nov 2023 20:37:21 -0800 (PST) From: Sam Li To: qemu-devel@nongnu.org Cc: dmitry.fomichev@wdc.com, qemu-block@nongnu.org, Kevin Wolf , dlemoal@kernel.org, hare@suse.de, Hanna Reitz , stefanha@redhat.com, Eric Blake , Markus Armbruster , Sam Li Subject: [PATCH v6 3/4] qcow2: add zoned emulation capability Date: Mon, 27 Nov 2023 12:37:02 +0800 Message-Id: <20231127043703.49489-4-faithilikerun@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231127043703.49489-1-faithilikerun@gmail.com> References: <20231127043703.49489-1-faithilikerun@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42b; envelope-from=faithilikerun@gmail.com; helo=mail-pf1-x42b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org By adding zone operations and zoned metadata, the zoned emulation capability enables full emulation support of zoned device using a qcow2 file. The zoned device metadata includes zone type, zoned device state and write pointer of each zone, which is stored to an array of unsigned integers. Each zone of a zoned device makes state transitions following the zone state machine. The zone state machine mainly describes five states, IMPLICIT OPEN, EXPLICIT OPEN, FULL, EMPTY and CLOSED. READ ONLY and OFFLINE states will generally be affected by device internal events. The operations on zones cause corresponding state changing. Zoned devices have a limit on zone resources, which puts constraints on write operations into zones. It is managed by active zone lists following LRU policy. Signed-off-by: Sam Li --- block/qcow2.c | 741 ++++++++++++++++++++++++++++++++++++++++++- block/trace-events | 2 + include/qemu/queue.h | 1 + 3 files changed, 742 insertions(+), 2 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index 9a92cd242c..26f2bb4a87 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -195,6 +195,179 @@ qcow2_extract_crypto_opts(QemuOpts *opts, const char *fmt, Error **errp) return cryptoopts_qdict; } +#define QCOW2_ZT_IS_CONV(wp) (wp & 1ULL << 59) + +/* + * To emulate a real zoned device, closed, empty and full states are + * preserved after a power cycle. Open states are in-memory and will + * be lost after closing the device. Read-only and offline states are + * device-internal events, which are not considered for simplicity. + */ +static inline BlockZoneState qcow2_get_zone_state(BlockDriverState *bs, + uint32_t index) +{ + BDRVQcow2State *s = bs->opaque; + Qcow2ZoneListEntry *zone_entry = &s->zone_list_entries[index]; + uint64_t zone_wp = bs->wps->wp[index]; + uint64_t zone_start; + + if (QCOW2_ZT_IS_CONV(zone_wp)) { + return BLK_ZS_NOT_WP; + } + + if (QLIST_IS_INSERTED(zone_entry, exp_open_zone_entry)) { + return BLK_ZS_EOPEN; + } + if (QLIST_IS_INSERTED(zone_entry, imp_open_zone_entry)) { + return BLK_ZS_IOPEN; + } + + zone_start = index * bs->bl.zone_size; + if (zone_wp == zone_start) { + return BLK_ZS_EMPTY; + } + if (zone_wp >= zone_start + bs->bl.zone_capacity) { + return BLK_ZS_FULL; + } + if (zone_wp > zone_start) { + return BLK_ZS_CLOSED; + } + return BLK_ZS_NOT_WP; +} + +/* + * Write the new wp value to the dedicated location of the image file. + */ +static int qcow2_write_wp_at(BlockDriverState *bs, uint64_t *wp, + uint32_t index) { + BDRVQcow2State *s = bs->opaque; + uint64_t wpv = *wp; + int ret; + + ret = bdrv_pwrite(bs->file, s->zoned_header.zonedmeta_offset + + sizeof(uint64_t) * index, sizeof(uint64_t), wp, 0); + if (ret < 0) { + goto exit; + } + trace_qcow2_wp_tracking(index, *wp >> BDRV_SECTOR_BITS); + return ret; + +exit: + *wp = wpv; + error_report("Failed to write metadata with file"); + return ret; +} + +static bool qcow2_can_activate_zone(BlockDriverState *bs) +{ + BDRVQcow2State *s = bs->opaque; + /* When the max active zone is zero, there is no limit on active zones */ + if (!s->zoned_header.max_active_zones) { + return true; + } + + /* The active zones are zones with the states of open and closed */ + if (s->nr_zones_exp_open + s->nr_zones_imp_open + s->nr_zones_closed + < s->zoned_header.max_active_zones) { + return true; + } + + return false; +} + +/* + * This function manages open zones under active zones limit. It checks + * if a zone can transition to open state while maintaining max open and + * active zone limits. + */ +static bool qcow2_can_open_zone(BlockDriverState *bs) +{ + BDRVQcow2State *s = bs->opaque; + Qcow2ZoneListEntry *zone_entry; + + /* When the max open zone is zero, there is no limit on open zones */ + if (!s->zoned_header.max_open_zones) { + return true; + } + + /* + * The open zones are zones with the states of explicitly and + * implicitly open. + */ + if (s->nr_zones_imp_open + s->nr_zones_exp_open < + s->zoned_header.max_open_zones) { + return true; + } + + /* + * Zones are managed once at a time. Thus, the number of implicitly open + * zone can never be over the open zone limit. When the active zone limit + * is not reached, close only one implicitly open zone. + */ + if (qcow2_can_activate_zone(bs)) { + /* + * The LRU policy is used for handling active zone lists. When + * removing a random zone entry, we discard the least recently used + * list item. The list item at the last is the least recently used + * one. The zone list maintained this property by removing the last + * entry and inserting before the first entry. + */ + zone_entry = QLIST_LAST(&s->imp_open_zones, imp_open_zone_entry); + QLIST_REMOVE(zone_entry, imp_open_zone_entry); + s->nr_zones_imp_open--; + trace_qcow2_imp_open_zones(0x23, s->nr_zones_imp_open); + QLIST_INSERT_HEAD(&s->closed_zones, zone_entry, closed_zone_entry); + s->nr_zones_closed++; + return true; + } + return false; +} + +/* + * The zoned device has limited zone resources on open, closed, active + * zones. + */ +static int qcow2_check_zone_resources(BlockDriverState *bs, + BlockZoneState zs) +{ + switch (zs) { + case BLK_ZS_EMPTY: + if (!qcow2_can_activate_zone(bs)) { + error_report("No enough active zones"); + return -EINVAL; + } + break; + case BLK_ZS_CLOSED: + if (!qcow2_can_open_zone(bs)) { + error_report("No enough open zones"); + return -EINVAL; + } + break; + default: + /* Other states will not affect zone resources management */ + return -EINVAL; + } + return 0; +} + +static inline int qcow2_refresh_zonedmeta(BlockDriverState *bs) +{ + int ret; + BDRVQcow2State *s = bs->opaque; + uint64_t wps_size = s->zoned_header.zonedmeta_size; + g_autofree uint64_t *temp = NULL; + temp = g_new(uint64_t, wps_size); + ret = bdrv_pread(bs->file, s->zoned_header.zonedmeta_offset, + wps_size, temp, 0); + if (ret < 0) { + error_report("Can not read metadata"); + return ret; + } + + memcpy(bs->wps->wp, temp, wps_size); + return 0; +} + /* * Passing by the zoned device configurations by a zoned_header struct, check * if the zone device options are under constraints. Return false when some @@ -508,7 +681,25 @@ qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, be32_to_cpu(zoned_ext.max_active_zones); zoned_ext.max_append_bytes = be32_to_cpu(zoned_ext.max_append_bytes); + zoned_ext.zonedmeta_offset = + be64_to_cpu(zoned_ext.zonedmeta_offset); + zoned_ext.zonedmeta_size = be64_to_cpu(zoned_ext.zonedmeta_size); s->zoned_header = zoned_ext; + bs->wps = g_malloc(sizeof(BlockZoneWps) + + s->zoned_header.zonedmeta_size); + ret = qcow2_refresh_zonedmeta(bs); + if (ret < 0) { + error_setg_errno(errp, -ret, "zonedmeta: " + "Could not update zoned meta"); + return ret; + } + + s->zone_list_entries = g_new0(Qcow2ZoneListEntry, + zoned_ext.nr_zones); + QLIST_INIT(&s->exp_open_zones); + QLIST_INIT(&s->imp_open_zones); + QLIST_INIT(&s->closed_zones); + qemu_co_mutex_init(&bs->wps->colock); /* refuse to open broken images */ if (zoned_ext.nr_zones != DIV_ROUND_UP(bs->total_sectors * @@ -2776,9 +2967,37 @@ qcow2_co_pwritev_part(BlockDriverState *bs, int64_t offset, int64_t bytes, uint64_t host_offset; QCowL2Meta *l2meta = NULL; AioTaskPool *aio = NULL; + int64_t start_offset, start_bytes; + BlockZoneState zs; + int64_t end; + uint64_t *wp; + int64_t zone_size = bs->bl.zone_size; + int index; trace_qcow2_writev_start_req(qemu_coroutine_self(), offset, bytes); + start_offset = offset; + start_bytes = bytes; + if (bs->bl.zoned == BLK_Z_HM) { + /* + * The offset should not less than the wp of that zone where + * offset starts. + */ + index = start_offset / zone_size; + wp = &bs->wps->wp[index]; + if (offset < *wp) { + return -EINVAL; + } + + /* Only allow writes when there are zone resources left */ + zs = qcow2_get_zone_state(bs, index); + if (zs == BLK_ZS_CLOSED || zs == BLK_ZS_EMPTY) { + if (qcow2_check_zone_resources(bs, zs) < 0) { + return -EINVAL; + } + } + } + while (bytes != 0 && aio_task_pool_status(aio) == 0) { l2meta = NULL; @@ -2824,6 +3043,68 @@ qcow2_co_pwritev_part(BlockDriverState *bs, int64_t offset, int64_t bytes, qiov_offset += cur_bytes; trace_qcow2_writev_done_part(qemu_coroutine_self(), cur_bytes); } + + if (bs->bl.zoned == BLK_Z_HM) { + index = start_offset / zone_size; + wp = &bs->wps->wp[index]; + zs = qcow2_get_zone_state(bs, index); + uint64_t wpv = *wp; + if (!QCOW2_ZT_IS_CONV(wpv)) { + /* align up (start_offset, zone_size), the start offset is not + * necessarily power of two. */ + end = ((start_offset + zone_size) / zone_size) * zone_size; + if (start_offset + start_bytes <= end) { + *wp = start_offset + start_bytes; + } else { + ret = -EINVAL; + goto fail_nometa; + } + + ret = qcow2_write_wp_at(bs, wp, index); + if (ret < 0) { + goto fail_nometa; + } + + /* + * The zone state transitions to implicit open when the original + * state is empty or closed. When the wp reaches the end, the + * open states (explicit open, implicit open) become full. + */ + Qcow2ZoneListEntry *zone_entry = &s->zone_list_entries[index]; + if (!(*wp & (zone_size - 1))) { + /* Being aligned to zone size implies full state */ + if (QLIST_IS_INSERTED(zone_entry, exp_open_zone_entry)) { + QLIST_REMOVE(zone_entry, exp_open_zone_entry); + s->nr_zones_exp_open--; + } else if (QLIST_IS_INSERTED(zone_entry, imp_open_zone_entry)) { + QLIST_REMOVE(zone_entry, imp_open_zone_entry); + s->nr_zones_imp_open--; + trace_qcow2_imp_open_zones(0x24, + s->nr_zones_imp_open); + } + } else { + if (zs == BLK_ZS_CLOSED || zs == BLK_ZS_EMPTY) { + QLIST_INSERT_HEAD(&s->imp_open_zones, zone_entry, + imp_open_zone_entry); + s->nr_zones_imp_open++; + + if (zs == BLK_ZS_CLOSED) { + s->nr_zones_closed--; + } + } else if (zs == BLK_ZS_IOPEN) { + /* + * The LRU policy: update the zone that is most recently + * used to the head of the zone list + */ + QLIST_REMOVE(zone_entry, imp_open_zone_entry); + QLIST_INSERT_HEAD(&s->imp_open_zones, zone_entry, + imp_open_zone_entry); + trace_qcow2_imp_open_zones(0x24, + s->nr_zones_imp_open); + } + } + } + } ret = 0; qemu_co_mutex_lock(&s->lock); @@ -2882,6 +3163,26 @@ static int GRAPH_RDLOCK qcow2_inactivate(BlockDriverState *bs) return result; } +static void qcow2_zoned_close(BDRVQcow2State *s) +{ + Qcow2ZoneListEntry *zone_entry, *next; + + QLIST_FOREACH_SAFE(zone_entry, &s->imp_open_zones, imp_open_zone_entry, + next) { + QLIST_REMOVE(zone_entry, imp_open_zone_entry); + s->nr_zones_imp_open--; + trace_qcow2_imp_open_zones(0x22, s->nr_zones_imp_open); + } + + QLIST_FOREACH_SAFE(zone_entry, &s->exp_open_zones, exp_open_zone_entry, + next) { + QLIST_REMOVE(zone_entry, exp_open_zone_entry); + s->nr_zones_exp_open--; + } + + assert(s->nr_zones_imp_open + s->nr_zones_exp_open == 0); +} + static void coroutine_mixed_fn GRAPH_RDLOCK qcow2_do_close(BlockDriverState *bs, bool close_data_file) { @@ -2921,6 +3222,8 @@ qcow2_do_close(BlockDriverState *bs, bool close_data_file) qcow2_refcount_close(bs); qcow2_free_snapshots(bs); + qcow2_zoned_close(s); + g_free(bs->wps); } static void GRAPH_UNLOCKED qcow2_close(BlockDriverState *bs) @@ -3235,7 +3538,10 @@ int qcow2_update_header(BlockDriverState *bs) .max_active_zones = cpu_to_be32(s->zoned_header.max_active_zones), .max_append_bytes = - cpu_to_be32(s->zoned_header.max_append_bytes) + cpu_to_be32(s->zoned_header.max_append_bytes), + .zonedmeta_offset = + cpu_to_be64(s->zoned_header.zonedmeta_offset), + .zonedmeta_size = cpu_to_be64(s->zoned_header.zonedmeta_size), }; ret = header_ext_add(buf, QCOW2_EXT_MAGIC_ZONED_FORMAT, &zoned_header, sizeof(zoned_header), @@ -3643,7 +3949,8 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp) int version; int refcount_order; uint64_t *refcount_table; - int ret; + uint64_t zoned_meta_size, zoned_clusterlen; + int ret, offset, i; uint8_t compression_type = QCOW2_COMPRESSION_TYPE_ZLIB; assert(create_options->driver == BLOCKDEV_DRIVER_QCOW2); @@ -3985,6 +4292,45 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp) ret = -EINVAL; goto out; } + + uint32_t nrz = s->zoned_header.nr_zones; + zoned_meta_size = sizeof(uint64_t) * nrz; + g_autofree uint64_t *meta = NULL; + meta = g_new0(uint64_t, nrz); + + for (i = 0; i < s->zoned_header.conventional_zones; ++i) { + meta[i] = i * s->zoned_header.zone_size; + meta[i] |= 1ULL << 59; + } + + for (; i < nrz; ++i) { + meta[i] = i * s->zoned_header.zone_size; + } + + offset = qcow2_alloc_clusters(blk_bs(blk), zoned_meta_size); + if (offset < 0) { + error_setg_errno(errp, -offset, "Could not allocate clusters " + "for zoned metadata size"); + goto out; + } + s->zoned_header.zonedmeta_offset = offset; + s->zoned_header.zonedmeta_size = zoned_meta_size; + + zoned_clusterlen = size_to_clusters(s, zoned_meta_size) + * s->cluster_size; + assert(qcow2_pre_write_overlap_check(bs, 0, offset, + zoned_clusterlen,false) == 0); + ret = bdrv_pwrite_zeroes(blk_bs(blk)->file, offset, + zoned_clusterlen, 0); + if (ret < 0) { + error_setg_errno(errp, -ret, "Could not zero fill zoned metadata"); + goto out; + } + ret = bdrv_pwrite(blk_bs(blk)->file, offset, zoned_meta_size, meta, 0); + if (ret < 0) { + error_setg_errno(errp, -ret, "Could not write zoned metadata " + "to disk"); + } } else { s->zoned_header.zoned = BLK_Z_NONE; } @@ -4324,6 +4670,393 @@ qcow2_co_pdiscard(BlockDriverState *bs, int64_t offset, int64_t bytes) return ret; } +static int coroutine_fn +qcow2_co_zone_report(BlockDriverState *bs, int64_t offset, + unsigned int *nr_zones, BlockZoneDescriptor *zones) +{ + BDRVQcow2State *s = bs->opaque; + uint64_t zone_size = s->zoned_header.zone_size; + int64_t capacity = bs->total_sectors << BDRV_SECTOR_BITS; + int64_t size = bs->bl.nr_zones * zone_size; + unsigned int nrz = *nr_zones; + int i = 0; + int si; + + if (offset >= capacity) { + error_report("offset %" PRId64 " is equal to or greater than the " + "device capacity %" PRId64 "", offset, capacity); + return -EINVAL; + } + + if (nrz > bs->bl.nr_zones) { + error_report("nr_zones %" PRId32 " should not exceed the device zones" + "%" PRId32 "", nrz, bs->bl.nr_zones); + return -EINVAL; + } + + if (zone_size > 0) { + si = offset / zone_size; + qemu_co_mutex_lock(&bs->wps->colock); + for (; i < nrz; ++i) { + if (i + si >= bs->bl.nr_zones) { + break; + } + + zones[i].start = (si + i) * zone_size; + + /* The last zone can be smaller than the zone size */ + if ((si + i + 1) == bs->bl.nr_zones && size > capacity) { + uint32_t l = zone_size - (size - capacity); + zones[i].length = l; + zones[i].cap = l; + } else { + zones[i].length = zone_size; + zones[i].cap = zone_size; + } + + uint64_t wp = bs->wps->wp[si + i]; + if (QCOW2_ZT_IS_CONV(wp)) { + zones[i].type = BLK_ZT_CONV; + zones[i].state = BLK_ZS_NOT_WP; + /* Clear the zone type bit */ + wp &= ~(1ULL << 59); + } else { + zones[i].type = BLK_ZT_SWR; + zones[i].state = qcow2_get_zone_state(bs, si + i); + } + zones[i].wp = wp; + } + qemu_co_mutex_unlock(&bs->wps->colock); + } + *nr_zones = i; + return 0; +} + +static int qcow2_open_zone(BlockDriverState *bs, uint32_t index) { + BDRVQcow2State *s = bs->opaque; + int ret; + + qemu_co_mutex_lock(&bs->wps->colock); + uint64_t *wp = &bs->wps->wp[index]; + BlockZoneState zs = qcow2_get_zone_state(bs, index); + + switch(zs) { + case BLK_ZS_EMPTY: + ret = qcow2_check_zone_resources(bs, BLK_ZS_EMPTY); + if (ret < 0) { + goto unlock; + } + break; + case BLK_ZS_IOPEN: + QLIST_REMOVE(&s->zone_list_entries[index], imp_open_zone_entry); + s->nr_zones_imp_open--; + trace_qcow2_imp_open_zones(BLK_ZO_OPEN, s->nr_zones_imp_open); + break; + case BLK_ZS_EOPEN: + return 0; + case BLK_ZS_CLOSED: + ret = qcow2_check_zone_resources(bs, BLK_ZS_CLOSED); + if (ret < 0) { + goto unlock; + } + s->nr_zones_closed--; + break; + case BLK_ZS_FULL: + break; + default: + ret = -EINVAL; + goto unlock; + } + + ret = qcow2_write_wp_at(bs, wp, index); + if (!ret) { + QLIST_INSERT_HEAD(&s->exp_open_zones, &s->zone_list_entries[index], + exp_open_zone_entry); + s->nr_zones_exp_open++; + } + +unlock: + qemu_co_mutex_unlock(&bs->wps->colock); + return ret; +} + +static int qcow2_close_zone(BlockDriverState *bs, uint32_t index) { + BDRVQcow2State *s = bs->opaque; + int ret; + + qemu_co_mutex_lock(&bs->wps->colock); + BlockZoneState zs = qcow2_get_zone_state(bs, index); + + switch(zs) { + case BLK_ZS_EMPTY: + break; + case BLK_ZS_IOPEN: + QLIST_REMOVE(&s->zone_list_entries[index], imp_open_zone_entry); + s->nr_zones_imp_open--; + trace_qcow2_imp_open_zones(BLK_ZO_CLOSE, s->nr_zones_imp_open); + break; + case BLK_ZS_EOPEN: + QLIST_REMOVE(&s->zone_list_entries[index], exp_open_zone_entry); + s->nr_zones_exp_open--; + break; + case BLK_ZS_CLOSED: + ret = qcow2_check_zone_resources(bs, BLK_ZS_CLOSED); + if (ret < 0) { + goto unlock; + } + s->nr_zones_closed--; + break; + case BLK_ZS_FULL: + break; + default: + ret = -EINVAL; + goto unlock; + } + + if (qcow2_get_zone_state(bs, index) == BLK_ZS_CLOSED) { + s->nr_zones_closed++; + } + ret = 0; + +unlock: + qemu_co_mutex_unlock(&bs->wps->colock); + return ret; +} + +static int qcow2_finish_zone(BlockDriverState *bs, uint32_t index) { + BDRVQcow2State *s = bs->opaque; + int ret; + + qemu_co_mutex_lock(&bs->wps->colock); + uint64_t *wp = &bs->wps->wp[index]; + BlockZoneState zs = qcow2_get_zone_state(bs, index); + + switch(zs) { + case BLK_ZS_EMPTY: + ret = qcow2_check_zone_resources(bs, BLK_ZS_EMPTY); + if (ret < 0) { + goto unlock; + } + break; + case BLK_ZS_IOPEN: + QLIST_REMOVE(&s->zone_list_entries[index], imp_open_zone_entry); + s->nr_zones_imp_open--; + trace_qcow2_imp_open_zones(BLK_ZO_FINISH, s->nr_zones_imp_open); + break; + case BLK_ZS_EOPEN: + QLIST_REMOVE(&s->zone_list_entries[index], exp_open_zone_entry); + s->nr_zones_exp_open--; + break; + case BLK_ZS_CLOSED: + ret = qcow2_check_zone_resources(bs, BLK_ZS_CLOSED); + if (ret < 0) { + goto unlock; + } + s->nr_zones_closed--; + break; + case BLK_ZS_FULL: + ret = 0; + goto unlock; + default: + ret = -EINVAL; + goto unlock; + } + + *wp = ((uint64_t)index + 1) * s->zoned_header.zone_size; + ret = qcow2_write_wp_at(bs, wp, index); + +unlock: + qemu_co_mutex_unlock(&bs->wps->colock); + return ret; +} + +static int qcow2_reset_zone(BlockDriverState *bs, uint32_t index, + int64_t len) { + BDRVQcow2State *s = bs->opaque; + int nrz = bs->bl.nr_zones; + int zone_size = bs->bl.zone_size; + int n, ret = 0; + + qemu_co_mutex_lock(&bs->wps->colock); + uint64_t *wp = &bs->wps->wp[index]; + if (len == bs->total_sectors << BDRV_SECTOR_BITS) { + n = nrz; + index = 0; + } else { + n = len / zone_size; + } + + for (int i = 0; i < n; ++i) { + uint64_t *wp_i = (uint64_t *)(wp + i); + uint64_t wpi_v = *wp_i; + if (QCOW2_ZT_IS_CONV(wpi_v)) { + continue; + } + + BlockZoneState zs = qcow2_get_zone_state(bs, index + i); + switch (zs) { + case BLK_ZS_EMPTY: + break; + case BLK_ZS_IOPEN: + QLIST_REMOVE(&s->zone_list_entries[index + i], imp_open_zone_entry); + s->nr_zones_imp_open--; + trace_qcow2_imp_open_zones(BLK_ZO_RESET, s->nr_zones_imp_open); + break; + case BLK_ZS_EOPEN: + QLIST_REMOVE(&s->zone_list_entries[index + i], exp_open_zone_entry); + s->nr_zones_exp_open--; + break; + case BLK_ZS_CLOSED: + s->nr_zones_closed--; + break; + case BLK_ZS_FULL: + break; + default: + ret = -EINVAL; + goto unlock; + } + + if (zs == BLK_ZS_EMPTY) { + continue; + } + + *wp_i = ((uint64_t)index + i) * zone_size; + ret = qcow2_write_wp_at(bs, wp_i, index + i); + if (ret < 0) { + goto unlock; + } + /* clear data */ + ret = qcow2_co_pwrite_zeroes(bs, *wp_i, zone_size, 0); + if (ret < 0) { + error_report("Failed to reset zone at 0x%" PRIx64 "", *wp_i); + } + } + +unlock: + qemu_co_mutex_unlock(&bs->wps->colock); + return ret; +} + +static int coroutine_fn qcow2_co_zone_mgmt(BlockDriverState *bs, BlockZoneOp op, + int64_t offset, int64_t len) +{ + BDRVQcow2State *s = bs->opaque; + int ret = 0; + int64_t capacity = bs->total_sectors << BDRV_SECTOR_BITS; + int64_t zone_size = s->zoned_header.zone_size; + int64_t zone_size_mask = zone_size - 1; + uint32_t index = offset / zone_size; + BlockZoneWps *wps = bs->wps; + + if (offset >= capacity) { + error_report("offset %" PRId64 " is equal to or greater than the" + "device capacity %" PRId64 "", offset, capacity); + return -EINVAL; + } + + if (offset & zone_size_mask) { + error_report("sector offset %" PRId64 " is not aligned to zone size" + " %" PRId64 "", offset / 512, zone_size / 512); + return -EINVAL; + } + + if (((offset + len) < capacity && len & zone_size_mask) || + offset + len > capacity) { + error_report("number of sectors %" PRId64 " is not aligned to zone" + " size %" PRId64 "", len / 512, zone_size / 512); + return -EINVAL; + } + + qemu_co_mutex_lock(&wps->colock); + uint64_t wpv = wps->wp[index]; + if (QCOW2_ZT_IS_CONV(wpv) && len != capacity) { + error_report("zone mgmt operations are not allowed for " + "conventional zones"); + ret = -EIO; + goto unlock; + } + qemu_co_mutex_unlock(&wps->colock); + + switch(op) { + case BLK_ZO_OPEN: + ret = qcow2_open_zone(bs, index); + break; + case BLK_ZO_CLOSE: + ret = qcow2_close_zone(bs, index); + break; + case BLK_ZO_FINISH: + ret = qcow2_finish_zone(bs, index); + break; + case BLK_ZO_RESET: + ret = qcow2_reset_zone(bs, index, len); + break; + default: + error_report("Unsupported zone op: 0x%x", op); + ret = -ENOTSUP; + break; + } + return ret; + +unlock: + qemu_co_mutex_unlock(&wps->colock); + return ret; +} + +static int coroutine_fn +qcow2_co_zone_append(BlockDriverState *bs, int64_t *offset, QEMUIOVector *qiov, + BdrvRequestFlags flags) +{ + assert(flags == 0); + int64_t capacity = bs->total_sectors << BDRV_SECTOR_BITS; + uint32_t index; + int ret; + int64_t zone_size_mask = bs->bl.zone_size - 1; + int64_t iov_len = 0; + int64_t len = 0; + + if (*offset >= capacity) { + error_report("*offset %" PRId64 " is equal to or greater than the" + "device capacity %" PRId64 "", *offset, capacity); + return -EINVAL; + } + + /* offset + len should not pass the end of that zone starting from offset */ + if (*offset & zone_size_mask) { + error_report("sector offset %" PRId64 " is not aligned to zone size " + "%" PRId32 "", *offset / 512, bs->bl.zone_size / 512); + return -EINVAL; + } + + int64_t wg = bs->bl.write_granularity; + int64_t wg_mask = wg - 1; + for (int i = 0; i < qiov->niov; i++) { + iov_len = qiov->iov[i].iov_len; + if (iov_len & wg_mask) { + error_report("len of IOVector[%d] %" PRId64 " is not aligned to " + "block size %" PRId64 "", i, iov_len, wg); + return -EINVAL; + } + } + len = qiov->size; + index = *offset / bs->bl.zone_size; + + if ((len >> BDRV_SECTOR_BITS) > bs->bl.max_append_sectors) { + return -ENOTSUP; + } + + qemu_co_mutex_lock(&bs->wps->colock); + uint64_t wp_i = bs->wps->wp[index]; + ret = qcow2_co_pwritev_part(bs, wp_i, len, qiov, 0, 0); + if (ret == 0) { + *offset = wp_i; + } else { + error_report("qcow2: zap failed"); + } + + qemu_co_mutex_unlock(&bs->wps->colock); + return ret; +} + static int coroutine_fn GRAPH_RDLOCK qcow2_co_copy_range_from(BlockDriverState *bs, BdrvChild *src, int64_t src_offset, @@ -6383,6 +7116,10 @@ BlockDriver bdrv_qcow2 = { .bdrv_co_pwritev_compressed_part = qcow2_co_pwritev_compressed_part, .bdrv_make_empty = qcow2_make_empty, + .bdrv_co_zone_report = qcow2_co_zone_report, + .bdrv_co_zone_mgmt = qcow2_co_zone_mgmt, + .bdrv_co_zone_append = qcow2_co_zone_append, + .bdrv_snapshot_create = qcow2_snapshot_create, .bdrv_snapshot_goto = qcow2_snapshot_goto, .bdrv_snapshot_delete = qcow2_snapshot_delete, diff --git a/block/trace-events b/block/trace-events index 8e789e1f12..e35222e079 100644 --- a/block/trace-events +++ b/block/trace-events @@ -82,6 +82,8 @@ qcow2_writev_data(void *co, uint64_t offset) "co %p offset 0x%" PRIx64 qcow2_pwrite_zeroes_start_req(void *co, int64_t offset, int64_t bytes) "co %p offset 0x%" PRIx64 " bytes %" PRId64 qcow2_pwrite_zeroes(void *co, int64_t offset, int64_t bytes) "co %p offset 0x%" PRIx64 " bytes %" PRId64 qcow2_skip_cow(void *co, uint64_t offset, int nb_clusters) "co %p offset 0x%" PRIx64 " nb_clusters %d" +qcow2_wp_tracking(int index, uint64_t wp) "wps[%d]: 0x%" PRIx64 +qcow2_imp_open_zones(uint8_t op, int nrz) "nr_imp_open_zones after op 0x%x: %d" # qcow2-cluster.c qcow2_alloc_clusters_offset(void *co, uint64_t offset, int bytes) "co %p offset 0x%" PRIx64 " bytes %d" diff --git a/include/qemu/queue.h b/include/qemu/queue.h index e029e7bf66..3f0a48740e 100644 --- a/include/qemu/queue.h +++ b/include/qemu/queue.h @@ -179,6 +179,7 @@ struct { \ #define QLIST_EMPTY(head) ((head)->lh_first == NULL) #define QLIST_FIRST(head) ((head)->lh_first) #define QLIST_NEXT(elm, field) ((elm)->field.le_next) +#define QLIST_LAST(head, field) (*(head)->lh_first->field.le_prev) /* From patchwork Mon Nov 27 04:37:03 2023 Content-Type: text/plain; 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([106.84.128.244]) by smtp.gmail.com with ESMTPSA id u15-20020a62ed0f000000b006c4d86a259csm6280070pfh.28.2023.11.26.20.37.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Nov 2023 20:37:25 -0800 (PST) From: Sam Li To: qemu-devel@nongnu.org Cc: dmitry.fomichev@wdc.com, qemu-block@nongnu.org, Kevin Wolf , dlemoal@kernel.org, hare@suse.de, Hanna Reitz , stefanha@redhat.com, Eric Blake , Markus Armbruster , Sam Li Subject: [PATCH v6 4/4] iotests: test the zoned format feature for qcow2 file Date: Mon, 27 Nov 2023 12:37:03 +0800 Message-Id: <20231127043703.49489-5-faithilikerun@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231127043703.49489-1-faithilikerun@gmail.com> References: <20231127043703.49489-1-faithilikerun@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42f; envelope-from=faithilikerun@gmail.com; helo=mail-pf1-x42f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The zoned format feature can be tested by: $ tests/qemu-iotests/check -qcow2 zoned-qcow2 Signed-off-by: Sam Li Reviewed-by: Stefan Hajnoczi --- tests/qemu-iotests/tests/zoned-qcow2 | 126 +++++++++++++++++++++++ tests/qemu-iotests/tests/zoned-qcow2.out | 118 +++++++++++++++++++++ 2 files changed, 244 insertions(+) create mode 100755 tests/qemu-iotests/tests/zoned-qcow2 create mode 100644 tests/qemu-iotests/tests/zoned-qcow2.out diff --git a/tests/qemu-iotests/tests/zoned-qcow2 b/tests/qemu-iotests/tests/zoned-qcow2 new file mode 100755 index 0000000000..d7141a35aa --- /dev/null +++ b/tests/qemu-iotests/tests/zoned-qcow2 @@ -0,0 +1,126 @@ +#!/usr/bin/env bash +# +# Test zone management operations for qcow2 file. +# + +seq="$(basename $0)" +echo "QA output created by $seq" +status=1 # failure is the default! + +file_name="zbc.qcow2" +_cleanup() +{ + _cleanup_test_img + _rm_test_img "$file_name" +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ../common.rc +. ../common.filter +. ../common.qemu + +# This test only runs on Linux hosts with qcow2 image files. +_supported_fmt qcow2 +_supported_proto file +_supported_os Linux + +echo +echo "=== Initial image setup ===" +echo + +$QEMU_IMG create -f qcow2 $file_name -o size=768M -o zone.size=64M -o \ +zone.capacity=64M -o zone.conventional_zones=0 -o zone.max_append_bytes=131072 \ +-o zone.max_open_zones=10 -o zone.max_active_zones=12 -o zone.mode=host-managed + +IMG="--image-opts -n driver=qcow2,file.driver=file,file.filename=$file_name" +QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT + +echo +echo "=== Testing a qcow2 img with zoned format ===" +echo +echo "case 1: test zone operations one by one" + +echo "(1) report zones[0]:" +$QEMU_IO $IMG -c "zrp 0 1" +echo +echo "report zones[0~9]:" +$QEMU_IO $IMG -c "zrp 0 10" +echo +echo "report zones[-1]:" # zones[-1] dictates the last zone +$QEMU_IO $IMG -c "zrp 0x2C000000 2" # 0x2C000000 / 512 = 0x160000 +echo +echo +echo "(2) open zones[0], zones[1], zones[-1] then close, finish, reset:" +$QEMU_IO $IMG << EOF +zo 0 0x4000000 # 0x4000000 / 512 = 0x20000 +zrp 0 1 +zo 0x4000000 0x4000000 +zrp 0x4000000 1 +zo 0x2C000000 0x4000000 +zrp 0x2C000000 2 +zc 0 0x4000000 +zrp 0 1 +zc 0x2C000000 0x4000000 +zrp 0x2C000000 2 +zf 0 0x4000000 +zrp 0 1 +zf 64M 64M +zrp 0x4000000 2 +zf 0x2C000000 0x4000000 +zrp 0x2C000000 2 +zrs 0 0x4000000 +zrp 0 1 +zrs 0x4000000 0x4000000 +zrp 0x4000000 1 +zrs 0x2C000000 0x4000000 +zrp 0x2C000000 2 +EOF + +echo +echo "(3) append write with (4k, 8k) data" +$QEMU_IO $IMG -c "zrp 0 12" # the physical block size of the device is 4096 +echo "Append write zones[0], zones[1] twice" +$QEMU_IO $IMG << EOF +zap -p 0 0x1000 0x2000 +zrp 0 1 +zap -p 0 0x1000 0x2000 +zrp 0 1 +zap -p 0x4000000 0x1000 0x2000 +zrp 0x4000000 1 +zap -p 0x4000000 0x1000 0x2000 +zrp 0x4000000 1 +EOF + +echo +echo "Reset all:" +$QEMU_IO $IMG -c "zrs 0 768M" -c "zrp 0 12" +echo +echo + +echo "case 2: test a sets of ops that works or not" +echo "(1) append write (4k, 4k) and then write to full" +$QEMU_IO $IMG << EOF +zap -p 0 0x1000 0x1000 # wrote (4k, 4k): +zrp 0 1 +zap -p 0 0x1000 0x3ffd000 +zrp 0 1 +EOF + +echo "Reset zones[0]:" +$QEMU_IO $IMG -c "zrs 0 64M" -c "zrp 0 1" + +echo "(2) write in zones[0], zones[3], zones[8], and then reset all" +$QEMU_IO $IMG << EOF +zap -p 0 0x1000 0x1000 +zap -p 0xc000000 0x1000 0x1000 +zap -p 0x20000000 0x1000 0x1000 +zrp 0 12 +zrs 0 768M +zrp 0 12 +EOF + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 diff --git a/tests/qemu-iotests/tests/zoned-qcow2.out b/tests/qemu-iotests/tests/zoned-qcow2.out new file mode 100644 index 0000000000..3b30ef545b --- /dev/null +++ b/tests/qemu-iotests/tests/zoned-qcow2.out @@ -0,0 +1,118 @@ +QA output created by zoned-qcow2 + +=== Initial image setup === + +Formatting 'zbc.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib zone.mode=host-managed zone.size=67108864 zone.capacity=67108864 zone.conventional_zones=0 zone.max_append_bytes=131072 zone.max_active_zones=12 zone.max_open_zones=10 size=805306368 lazy_refcounts=off refcount_bits=16 + +=== Testing a qcow2 img with zoned format === + +case 1: test zone operations one by one +(1) report zones[0]: +start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] + +report zones[0~9]: +start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] +start: 0x20000, len 0x20000, cap 0x20000, wptr 0x20000, zcond:1, [type: 2] +start: 0x40000, len 0x20000, cap 0x20000, wptr 0x40000, zcond:1, [type: 2] +start: 0x60000, len 0x20000, cap 0x20000, wptr 0x60000, zcond:1, [type: 2] +start: 0x80000, len 0x20000, cap 0x20000, wptr 0x80000, zcond:1, [type: 2] +start: 0xa0000, len 0x20000, cap 0x20000, wptr 0xa0000, zcond:1, [type: 2] +start: 0xc0000, len 0x20000, cap 0x20000, wptr 0xc0000, zcond:1, [type: 2] +start: 0xe0000, len 0x20000, cap 0x20000, wptr 0xe0000, zcond:1, [type: 2] +start: 0x100000, len 0x20000, cap 0x20000, wptr 0x100000, zcond:1, [type: 2] +start: 0x120000, len 0x20000, cap 0x20000, wptr 0x120000, zcond:1, [type: 2] + +report zones[-1]: +start: 0x160000, len 0x20000, cap 0x20000, wptr 0x160000, zcond:1, [type: 2] + + +(2) open zones[0], zones[1], zones[-1] then close, finish, reset: +qemu-io> bad argument count 8 to zo, expected 2 arguments +qemu-io> start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] +qemu-io> qemu-io> start: 0x20000, len 0x20000, cap 0x20000, wptr 0x20000, zcond:3, [type: 2] +qemu-io> qemu-io> start: 0x160000, len 0x20000, cap 0x20000, wptr 0x160000, zcond:3, [type: 2] +qemu-io> qemu-io> start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] +qemu-io> qemu-io> start: 0x160000, len 0x20000, cap 0x20000, wptr 0x160000, zcond:1, [type: 2] +qemu-io> qemu-io> start: 0x0, len 0x20000, cap 0x20000, wptr 0x20000, zcond:14, [type: 2] +qemu-io> qemu-io> start: 0x20000, len 0x20000, cap 0x20000, wptr 0x40000, zcond:14, [type: 2] +start: 0x40000, len 0x20000, cap 0x20000, wptr 0x40000, zcond:1, [type: 2] +qemu-io> qemu-io> start: 0x160000, len 0x20000, cap 0x20000, wptr 0x180000, zcond:14, [type: 2] +qemu-io> qemu-io> start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] +qemu-io> qemu-io> start: 0x20000, len 0x20000, cap 0x20000, wptr 0x20000, zcond:1, [type: 2] +qemu-io> qemu-io> start: 0x160000, len 0x20000, cap 0x20000, wptr 0x160000, zcond:1, [type: 2] +qemu-io> +(3) append write with (4k, 8k) data +start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] +start: 0x20000, len 0x20000, cap 0x20000, wptr 0x20000, zcond:1, [type: 2] +start: 0x40000, len 0x20000, cap 0x20000, wptr 0x40000, zcond:1, [type: 2] +start: 0x60000, len 0x20000, cap 0x20000, wptr 0x60000, zcond:1, [type: 2] +start: 0x80000, len 0x20000, cap 0x20000, wptr 0x80000, zcond:1, [type: 2] +start: 0xa0000, len 0x20000, cap 0x20000, wptr 0xa0000, zcond:1, [type: 2] +start: 0xc0000, len 0x20000, cap 0x20000, wptr 0xc0000, zcond:1, [type: 2] +start: 0xe0000, len 0x20000, cap 0x20000, wptr 0xe0000, zcond:1, [type: 2] +start: 0x100000, len 0x20000, cap 0x20000, wptr 0x100000, zcond:1, [type: 2] +start: 0x120000, len 0x20000, cap 0x20000, wptr 0x120000, zcond:1, [type: 2] +start: 0x140000, len 0x20000, cap 0x20000, wptr 0x140000, zcond:1, [type: 2] +start: 0x160000, len 0x20000, cap 0x20000, wptr 0x160000, zcond:1, [type: 2] +Append write zones[0], zones[1] twice +qemu-io> After zap done, the append sector is 0x0 +qemu-io> start: 0x0, len 0x20000, cap 0x20000, wptr 0x18, zcond:2, [type: 2] +qemu-io> After zap done, the append sector is 0x18 +qemu-io> start: 0x0, len 0x20000, cap 0x20000, wptr 0x30, zcond:2, [type: 2] +qemu-io> After zap done, the append sector is 0x20000 +qemu-io> start: 0x20000, len 0x20000, cap 0x20000, wptr 0x20018, zcond:2, [type: 2] +qemu-io> After zap done, the append sector is 0x20018 +qemu-io> start: 0x20000, len 0x20000, cap 0x20000, wptr 0x20030, zcond:2, [type: 2] +qemu-io> +Reset all: +start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] +start: 0x20000, len 0x20000, cap 0x20000, wptr 0x20000, zcond:1, [type: 2] +start: 0x40000, len 0x20000, cap 0x20000, wptr 0x40000, zcond:1, [type: 2] +start: 0x60000, len 0x20000, cap 0x20000, wptr 0x60000, zcond:1, [type: 2] +start: 0x80000, len 0x20000, cap 0x20000, wptr 0x80000, zcond:1, [type: 2] +start: 0xa0000, len 0x20000, cap 0x20000, wptr 0xa0000, zcond:1, [type: 2] +start: 0xc0000, len 0x20000, cap 0x20000, wptr 0xc0000, zcond:1, [type: 2] +start: 0xe0000, len 0x20000, cap 0x20000, wptr 0xe0000, zcond:1, [type: 2] +start: 0x100000, len 0x20000, cap 0x20000, wptr 0x100000, zcond:1, [type: 2] +start: 0x120000, len 0x20000, cap 0x20000, wptr 0x120000, zcond:1, [type: 2] +start: 0x140000, len 0x20000, cap 0x20000, wptr 0x140000, zcond:1, [type: 2] +start: 0x160000, len 0x20000, cap 0x20000, wptr 0x160000, zcond:1, [type: 2] + + +case 2: test a sets of ops that works or not +(1) append write (4k, 4k) and then write to full +qemu-io> bad argument count 8 to zap, expected between 3 and 4 arguments +qemu-io> start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] +qemu-io> zone append failed: Operation not supported +qemu-io> start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] +qemu-io> Reset zones[0]: +start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] +(2) write in zones[0], zones[3], zones[8], and then reset all +qemu-io> After zap done, the append sector is 0x0 +qemu-io> After zap done, the append sector is 0x60000 +qemu-io> After zap done, the append sector is 0x100000 +qemu-io> start: 0x0, len 0x20000, cap 0x20000, wptr 0x10, zcond:2, [type: 2] +start: 0x20000, len 0x20000, cap 0x20000, wptr 0x20000, zcond:1, [type: 2] +start: 0x40000, len 0x20000, cap 0x20000, wptr 0x40000, zcond:1, [type: 2] +start: 0x60000, len 0x20000, cap 0x20000, wptr 0x60010, zcond:2, [type: 2] +start: 0x80000, len 0x20000, cap 0x20000, wptr 0x80000, zcond:1, [type: 2] +start: 0xa0000, len 0x20000, cap 0x20000, wptr 0xa0000, zcond:1, [type: 2] +start: 0xc0000, len 0x20000, cap 0x20000, wptr 0xc0000, zcond:1, [type: 2] +start: 0xe0000, len 0x20000, cap 0x20000, wptr 0xe0000, zcond:1, [type: 2] +start: 0x100000, len 0x20000, cap 0x20000, wptr 0x100010, zcond:2, [type: 2] +start: 0x120000, len 0x20000, cap 0x20000, wptr 0x120000, zcond:1, [type: 2] +start: 0x140000, len 0x20000, cap 0x20000, wptr 0x140000, zcond:1, [type: 2] +start: 0x160000, len 0x20000, cap 0x20000, wptr 0x160000, zcond:1, [type: 2] +qemu-io> qemu-io> start: 0x0, len 0x20000, cap 0x20000, wptr 0x0, zcond:1, [type: 2] +start: 0x20000, len 0x20000, cap 0x20000, wptr 0x20000, zcond:1, [type: 2] +start: 0x40000, len 0x20000, cap 0x20000, wptr 0x40000, zcond:1, [type: 2] +start: 0x60000, len 0x20000, cap 0x20000, wptr 0x60000, zcond:1, [type: 2] +start: 0x80000, len 0x20000, cap 0x20000, wptr 0x80000, zcond:1, [type: 2] +start: 0xa0000, len 0x20000, cap 0x20000, wptr 0xa0000, zcond:1, [type: 2] +start: 0xc0000, len 0x20000, cap 0x20000, wptr 0xc0000, zcond:1, [type: 2] +start: 0xe0000, len 0x20000, cap 0x20000, wptr 0xe0000, zcond:1, [type: 2] +start: 0x100000, len 0x20000, cap 0x20000, wptr 0x100000, zcond:1, [type: 2] +start: 0x120000, len 0x20000, cap 0x20000, wptr 0x120000, zcond:1, [type: 2] +start: 0x140000, len 0x20000, cap 0x20000, wptr 0x140000, zcond:1, [type: 2] +start: 0x160000, len 0x20000, cap 0x20000, wptr 0x160000, zcond:1, [type: 2] +qemu-io> *** done