From patchwork Fri Oct 27 07:46:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Ivanov X-Patchwork-Id: 13438180 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 92B19C25B67 for ; Fri, 27 Oct 2023 07:48:49 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qwHZc-0000Il-Vd; Fri, 27 Oct 2023 03:48:05 -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 1qwHYs-0007IT-Q5; Fri, 27 Oct 2023 03:47:23 -0400 Received: from mail-db5eur02on20704.outbound.protection.outlook.com ([2a01:111:f400:fe12::704] helo=EUR02-DB5-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qwHYm-00040L-QX; Fri, 27 Oct 2023 03:47:15 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Mr3uBQagVzx/8Wc7A2iOwVIigLR3lbYfO6eKYux4YlXLymKZQ+c/+m2OTq7JLUB6mCU1UHGMoxXd0Pu7IJZsAQminty/kW3qnPaMISIVkSAW00fakGZ85yZS+1CDVyYIeWfHA7eFEMH+KUgDn33oln2HENdEDtWVzQtwVsOXW8gx9PDdSV7Qjb0jrwfqz92z1B2FBpdD35LbCE4m7MLt3Y+V34BURJhDFhl7u5+Ogn3L84rB3tf3ZVIT1peX0mRqIb6uCfArc3XV/PqNcRijhtFDGVsZ25lbJHzg2JvMxvnQ6AgOud2Jvu2e2je98aG194yESwLZkK/SvZ+0lim1qg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=SjqSBFKXqJU2hAUfhWqXYXDLCOB51EzNML7tEqlJpl4=; b=HRr18ryBex8ti2A98nZLzxHFmYxkPhnjWA8pVW7AoVZZI5pGf3L6sZE6cvvGZg61H+BQUx8mWcZkg47wbsNho/BP1owOj0wSlViHScR30zvJYGXnOZlys6ftgzFCWwCBQR1Qm/1BBDayuYK69mZJOiuOwr+HSDjq4lwGttW0mJaMcu7Br0m0oJ4Rw27ZKoEAG8DnJVDN9k5SMYRURzcW8zUfiqt3185H/GqvVZ6XBNXJ6soYxSlRLYcmstzcddIvJicsgTJGNF7fYcbgVb2XtiPyjAk8od2TBi2iFPnxgXTN6YEjzPPWQrF69hk3D2+y3JjP1gNrFic1MMPJUZ1EWQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=virtuozzo.com; dmarc=pass action=none header.from=virtuozzo.com; dkim=pass header.d=virtuozzo.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=virtuozzo.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=SjqSBFKXqJU2hAUfhWqXYXDLCOB51EzNML7tEqlJpl4=; b=YDpr2m/NoIcceKYzFhFT18qduDjHAHUJuEX48rDwskVTmE/6Mp9b2uxQdryIHDuGdasKpJtnu9M5j511jfQV6lqHtfpDR8cG8J8JNyjn7knsnuQ1rB54ODrNQKXxpACr0RTy0nVh2C9ZmHWSwMVAyOLsGOfhlebOmMfifgjCyTnymgFX6eNHUt9Mhoa3A2sGLwiFy80eIc8G30PiOLjfQphOGBCBWa7HND/KhAvXlmBj1UZWClerVilJoAKyjqq7+2+lUsiv1sf8ULaRRjxfLRBFEvvkkbVMDJzn7mP3MA78TCzAsX6ElnLhSWAU/y/FHKJasxiFqudNX9yQx63Jmg== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=virtuozzo.com; Received: from VI0PR08MB10743.eurprd08.prod.outlook.com (2603:10a6:800:205::19) by DB4PR08MB8056.eurprd08.prod.outlook.com (2603:10a6:10:387::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6907.33; Fri, 27 Oct 2023 07:46:48 +0000 Received: from VI0PR08MB10743.eurprd08.prod.outlook.com ([fe80::22f7:6498:de53:5371]) by VI0PR08MB10743.eurprd08.prod.outlook.com ([fe80::22f7:6498:de53:5371%4]) with mapi id 15.20.6933.024; Fri, 27 Oct 2023 07:46:48 +0000 From: Alexander Ivanov To: qemu-devel@nongnu.org Cc: qemu-block@nongnu.org, den@virtuozzo.com, stefanha@redhat.com, vsementsov@yandex-team.ru, kwolf@redhat.com, hreitz@redhat.com Subject: [PATCH v3 10/21] parallels: Add dirty bitmaps saving Date: Fri, 27 Oct 2023 09:46:25 +0200 Message-Id: <20231027074636.430139-11-alexander.ivanov@virtuozzo.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231027074636.430139-1-alexander.ivanov@virtuozzo.com> References: <20231027074636.430139-1-alexander.ivanov@virtuozzo.com> X-ClientProxiedBy: VI1PR10CA0101.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:803:28::30) To VI0PR08MB10743.eurprd08.prod.outlook.com (2603:10a6:800:205::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VI0PR08MB10743:EE_|DB4PR08MB8056:EE_ X-MS-Office365-Filtering-Correlation-Id: 389bf89d-0d2c-44d1-e32c-08dbd6c0df01 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:VI0PR08MB10743.eurprd08.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230031)(396003)(366004)(376002)(136003)(346002)(39840400004)(230922051799003)(186009)(1800799009)(64100799003)(451199024)(38350700005)(6512007)(6666004)(52116002)(6486002)(6506007)(478600001)(38100700002)(86362001)(36756003)(2906002)(66556008)(2616005)(26005)(1076003)(4326008)(8936002)(316002)(66946007)(6916009)(44832011)(5660300002)(66476007)(41300700001)(8676002)(83380400001)(14143004); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: virtuozzo.com X-MS-Exchange-CrossTenant-Network-Message-Id: 389bf89d-0d2c-44d1-e32c-08dbd6c0df01 X-MS-Exchange-CrossTenant-AuthSource: VI0PR08MB10743.eurprd08.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Oct 2023 07:46:46.7715 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 0bc7f26d-0264-416e-a6fc-8352af79c58f X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Aigh6oJNRhXNHAEjeFoy2o8mSjk7AemZW0xw4HipLQ+gZhNTFGT+E6oFgupKACz8NQw3VyR/Ghk8ml/7g8cX//XP6Rtb6NwdxqbiOtSiu4I= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB4PR08MB8056 Received-SPF: pass client-ip=2a01:111:f400:fe12::704; envelope-from=alexander.ivanov@virtuozzo.com; helo=EUR02-DB5-obe.outbound.protection.outlook.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, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 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 Now dirty bitmaps can be loaded but there is no their saving. Add code for dirty bitmap storage. Signed-off-by: Alexander Ivanov --- block/parallels-ext.c | 167 ++++++++++++++++++++++++++++++++++++++++++ block/parallels.c | 16 +++- block/parallels.h | 5 ++ 3 files changed, 186 insertions(+), 2 deletions(-) diff --git a/block/parallels-ext.c b/block/parallels-ext.c index 8a109f005a..0a632a2331 100644 --- a/block/parallels-ext.c +++ b/block/parallels-ext.c @@ -24,6 +24,7 @@ */ #include "qemu/osdep.h" +#include "qemu/error-report.h" #include "qapi/error.h" #include "block/block-io.h" #include "block/block_int.h" @@ -301,3 +302,169 @@ out: return ret; } + +static void parallels_save_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, + uint8_t **buf, int *buf_size) +{ + BDRVParallelsState *s = bs->opaque; + ParallelsFeatureHeader *fh; + ParallelsDirtyBitmapFeature *bh; + uint64_t *l1_table, l1_size, granularity, limit; + int64_t bm_size, ser_size, offset, buf_used; + int64_t alloc_size = 1; + const char *name; + uint8_t *bm_buf; + QemuUUID uuid; + int ret = 0; + + if (!bdrv_dirty_bitmap_get_persistence(bitmap) || + bdrv_dirty_bitmap_inconsistent(bitmap)) { + return; + } + + bm_size = bdrv_dirty_bitmap_size(bitmap); + granularity = bdrv_dirty_bitmap_granularity(bitmap); + limit = bdrv_dirty_bitmap_serialization_coverage(s->cluster_size, bitmap); + ser_size = bdrv_dirty_bitmap_serialization_size(bitmap, 0, bm_size); + l1_size = DIV_ROUND_UP(ser_size, s->cluster_size); + + buf_used = l1_size * 8 + sizeof(*fh) + sizeof(*bh); + /* Check if there is enough space for the final section */ + if (*buf_size - buf_used < sizeof(*fh)) { + return; + } + + name = bdrv_dirty_bitmap_name(bitmap); + ret = qemu_uuid_parse(name, &uuid); + if (ret < 0) { + error_report("Can't save dirty bitmap: ID parsing error: '%s'", name); + return; + } + + fh = (ParallelsFeatureHeader *)*buf; + bh = (ParallelsDirtyBitmapFeature *)(*buf + sizeof(*fh)); + l1_table = (uint64_t *)((uint8_t *)bh + sizeof(*bh)); + + fh->magic = cpu_to_le64(PARALLELS_DIRTY_BITMAP_FEATURE_MAGIC); + fh->data_size = cpu_to_le32(l1_size * 8 + sizeof(*bh)); + + bh->l1_size = cpu_to_le32(l1_size); + bh->size = cpu_to_le64(bm_size >> BDRV_SECTOR_BITS); + bh->granularity = cpu_to_le32(granularity >> BDRV_SECTOR_BITS); + memcpy(bh->id, &uuid, sizeof(uuid)); + + bm_buf = qemu_blockalign(bs, s->cluster_size); + + offset = 0; + while ((offset = bdrv_dirty_bitmap_next_dirty(bitmap, offset, bm_size)) >= 0) { + uint64_t idx = offset / limit; + int64_t cluster_off, end, write_size; + + offset = QEMU_ALIGN_DOWN(offset, limit); + end = MIN(bm_size, offset + limit); + write_size = bdrv_dirty_bitmap_serialization_size(bitmap, offset, + end - offset); + assert(write_size <= s->cluster_size); + + bdrv_dirty_bitmap_serialize_part(bitmap, bm_buf, offset, end - offset); + if (write_size < s->cluster_size) { + memset(bm_buf + write_size, 0, s->cluster_size - write_size); + } + + cluster_off = parallels_allocate_host_clusters(bs, &alloc_size); + if (cluster_off <= 0) { + goto end; + } + + ret = bdrv_pwrite(bs->file, cluster_off, s->cluster_size, bm_buf, 0); + if (ret < 0) { + memset(&fh->magic, 0, sizeof(fh->magic)); + parallels_mark_unused(bs, s->used_bmap, s->used_bmap_size, + cluster_off, 1); + goto end; + } + + l1_table[idx] = cpu_to_le64(cluster_off >> BDRV_SECTOR_BITS); + offset = end; + } + + *buf_size -= buf_used; + *buf += buf_used; + +end: + qemu_vfree(bm_buf); +} + +void parallels_store_persistent_dirty_bitmaps(BlockDriverState *bs, + Error **errp) +{ + BDRVParallelsState *s = bs->opaque; + BdrvDirtyBitmap *bitmap; + ParallelsFormatExtensionHeader *eh; + int remaining = s->cluster_size; + uint8_t *buf, *pos; + int64_t header_off, alloc_size = 1; + g_autofree uint8_t *hash = NULL; + size_t hash_len = 0; + int ret; + + s->header->ext_off = 0; + + if (!bdrv_has_named_bitmaps(bs)) { + return; + } + + buf = qemu_blockalign0(bs, s->cluster_size); + + eh = (ParallelsFormatExtensionHeader *)buf; + pos = buf + sizeof(*eh); + + eh->magic = cpu_to_le64(PARALLELS_FORMAT_EXTENSION_MAGIC); + + FOR_EACH_DIRTY_BITMAP(bs, bitmap) { + parallels_save_bitmap(bs, bitmap, &pos, &remaining); + } + + header_off = parallels_allocate_host_clusters(bs, &alloc_size); + if (header_off < 0) { + error_report("Can't save dirty bitmap: cluster allocation error"); + ret = header_off; + goto end; + } + + ret = qcrypto_hash_bytes(QCRYPTO_HASH_ALG_MD5, + (const char *)(buf + sizeof(*eh)), + s->cluster_size - sizeof(*eh), + &hash, &hash_len, errp); + if (ret < 0 || hash_len != sizeof(eh->check_sum)) { + error_report("Can't save dirty bitmap: hash error"); + ret = -EINVAL; + goto end; + } + memcpy(eh->check_sum, hash, hash_len); + + ret = bdrv_pwrite(bs->file, header_off, s->cluster_size, buf, 0); + if (ret < 0) { + error_report("Can't save dirty bitmap: IO error"); + parallels_mark_unused(bs, s->used_bmap, s->used_bmap_size, + header_off, 1); + goto end; + } + + s->header->ext_off = cpu_to_le64(header_off / BDRV_SECTOR_SIZE); +end: + qemu_vfree(buf); +} + +bool coroutine_fn parallels_co_can_store_new_dirty_bitmap(BlockDriverState *bs, + const char *name, + uint32_t granularity, + Error **errp) +{ + if (bdrv_find_dirty_bitmap(bs, name)) { + error_setg(errp, "Bitmap already exists: %s", name); + return false; + } + + return true; +} diff --git a/block/parallels.c b/block/parallels.c index 925aa9e569..2d82e8ff6a 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -1468,14 +1468,25 @@ fail: static int parallels_inactivate(BlockDriverState *bs) { BDRVParallelsState *s = bs->opaque; + Error *err = NULL; int ret; + parallels_store_persistent_dirty_bitmaps(bs, &err); + if (err != NULL) { + error_reportf_err(err, "Lost persistent bitmaps during " + "inactivation of node '%s': ", + bdrv_get_device_or_node_name(bs)); + } + s->header->inuse = 0; parallels_update_header(bs); /* errors are ignored, so we might as well pass exact=true */ - ret = bdrv_truncate(bs->file, s->data_end << BDRV_SECTOR_BITS, true, - PREALLOC_MODE_OFF, 0, NULL); + ret = bdrv_truncate(bs->file, s->data_end << BDRV_SECTOR_BITS, + true, PREALLOC_MODE_OFF, 0, NULL); + if (ret < 0) { + error_report("Failed to truncate image: %s", strerror(-ret)); + } return ret; } @@ -1525,6 +1536,7 @@ static BlockDriver bdrv_parallels = { .bdrv_co_pdiscard = parallels_co_pdiscard, .bdrv_co_pwrite_zeroes = parallels_co_pwrite_zeroes, .bdrv_inactivate = parallels_inactivate, + .bdrv_co_can_store_new_dirty_bitmap = parallels_co_can_store_new_dirty_bitmap, }; static void bdrv_parallels_init(void) diff --git a/block/parallels.h b/block/parallels.h index 4e7aa6b80f..18b4f8068e 100644 --- a/block/parallels.h +++ b/block/parallels.h @@ -100,6 +100,11 @@ int64_t parallels_allocate_host_clusters(BlockDriverState *bs, int parallels_read_format_extension(BlockDriverState *bs, int64_t ext_off, Error **errp); +void parallels_store_persistent_dirty_bitmaps(BlockDriverState *bs, + Error **errp); +bool coroutine_fn +parallels_co_can_store_new_dirty_bitmap(BlockDriverState *bs, const char *name, + uint32_t granularity, Error **errp); #endif