From patchwork Thu Dec 12 07:55:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13904788 Received: from mail-ej1-f47.google.com (mail-ej1-f47.google.com [209.85.218.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 79DD420B7FC for ; Thu, 12 Dec 2024 07:56:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.47 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733990170; cv=none; b=Nk43nRTIs5Zj8xxIJRRNYKgUGCXUyrsMhIhH/nemOLYu6XC9ql74mwkZwQJpr23U+g2x4XNOUlx6OjPqbQUinqdKi3gkDud1ZZCNCns0r5aa3GC73eVTDaAuDQZTGsLZA0AUYwDOotj5j5FEibVXsKQ/FucB1/45Wki3cuaVWXY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733990170; c=relaxed/simple; bh=lsalZYTX7Yfe+Z2ikNJkiwDQeUMbpgUuww8qUyEQH1A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qEFMQXVgT+4inzeyNiSe55IeLXs7zmiH4Z4bTQE4eXrSgQjGcegWblkxUKhrpePfVPKljhe4FYpONbGX3ALOmV6kFjGARQnaV/aSujF7USK8iuHfzobkI4AdqfSsM+wbB8a7CJPVuy+/MMvdTAJmZqv4IEOdQtvfgTI8RDQ1870= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=kernel.org; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.218.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=kernel.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-ej1-f47.google.com with SMTP id a640c23a62f3a-aa6aad76beeso43439966b.2 for ; Wed, 11 Dec 2024 23:56:08 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733990167; x=1734594967; 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=BGBSaj/NTtT7gerNC19D9yN2B2q1gfc9/emRAxeQxqI=; b=lXJQTpjXOkEjVo94Hreg2qhTIpxCb45KchzZlW8OA0s7shcj0vBMUm0+tfg06AKSHU fei8EApDTc15Jp53xcrPPJNGQs61OYo7AH7F530ni3xdE038vEVxCEVb2tQBGMfEiP7U Mn3QD6J78za8XLg3sN8vWF+se86mETl9soXwpHp3lVUkYGKiucGJvjM+xGzgogSDCZgh Q1McpBRgz/RGEXPDluNefTEPaveO8g8nd3pKSXDISmjcehL15eK9goV85mAAU7grC0OT VwyuMu+KV4PTtUSC3nGSQKky+hhgouqB+lmbz/9ZXrzGOhHD3RrAI5Pz4c693PM/iR6Q 9R9A== X-Gm-Message-State: AOJu0YyLWrwSSIEE/hC/GSeDGV92vTB2ip8/u3mQ91wOazQLaBwzv0Iq OP6YtJVTzYk6A+w9snZVpXjHwV3qIFKa9BwJoMHF6R4TyAXBAz7H/931bN3P X-Gm-Gg: ASbGncs7y4/+X8nEUkWS6wS2KWVcN25xtLjumK4WkadUQZwXjvyF3MbYB2ogkP0c/Nv iNLITUOe9ZgBaszBQtx785KDGCu9k1JenckFSPgmYSzoPnOK0G34+4pKpc8cccv8qY3UL+2Q8ai AKwnKCsF2EpG1McvITsjjr4xMGJWbdQpImJui6qQIumre9KOhNW4ohR1TxzQPaH3tyW3Jzy7CVS SkRfJvo0JR3YCIorWBakIhkx9M7opylknAKs2bFGGTXmhB5kUY2rtMBZA9BK3ar+JfxuzHkw27f 4JWeUjLtHRWa9ZjVoqZQCK3zE6bpst9MZzZD+Hg= X-Google-Smtp-Source: AGHT+IETe7PekR4qdpeocSdh/fn6qpJyEaOIH36n93N/VcYaDjb3+TEKz4fSUijHpFmjHHLzw7dquw== X-Received: by 2002:a17:907:c912:b0:aa6:7cf3:c6ef with SMTP id a640c23a62f3a-aa6b1192f5dmr471598066b.15.1733990166739; Wed, 11 Dec 2024 23:56:06 -0800 (PST) Received: from nuc.fritz.box (p200300f6f7081700fa633ffffe02074c.dip0.t-ipconnect.de. [2003:f6:f708:1700:fa63:3fff:fe02:74c]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aa6a3a80d6csm350730766b.8.2024.12.11.23.56.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Dec 2024 23:56:05 -0800 (PST) From: Johannes Thumshirn To: linux-btrfs@vger.kernel.org Cc: Josef Bacik , Damien Le Moal , David Sterba , Naohiro Aota , Qu Wenruo , Filipe Manana , Johannes Thumshirn Subject: [PATCH 11/14] btrfs: selftests: test RAID stripe-tree deletion spanning two items Date: Thu, 12 Dec 2024 08:55:30 +0100 Message-ID: <3f5da94fb0a98e09556468efdfff1cd7f71495c5.1733989299.git.jth@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Johannes Thumshirn Add a selftest for RAID stripe-tree deletion with a delete range spanning two items, so that we're punching a hole into two adjacent RAID stripe extents truncating the first and "moving" the second to the right. The following diagram illustrates the operation: |--- RAID Stripe Extent ---||--- RAID Stripe Extent ---| |----- keep -----|--- drop ---|----- keep ----| Signed-off-by: Johannes Thumshirn --- fs/btrfs/tests/raid-stripe-tree-tests.c | 144 ++++++++++++++++++++++++ 1 file changed, 144 insertions(+) diff --git a/fs/btrfs/tests/raid-stripe-tree-tests.c b/fs/btrfs/tests/raid-stripe-tree-tests.c index 12f3dbb23a64..a815fc5c4dd3 100644 --- a/fs/btrfs/tests/raid-stripe-tree-tests.c +++ b/fs/btrfs/tests/raid-stripe-tree-tests.c @@ -31,6 +31,149 @@ static struct btrfs_device *btrfs_device_by_devid(struct btrfs_fs_devices *fs_de return NULL; } +/* + * Test a 1M RST write that spans two adjecent RST items on disk and then + * delete a portion starting in the first item and spanning into the second + * item. This is similar to test_front_delete(), but spanning multiple items. + */ +static int test_front_delete_prev_item(struct btrfs_trans_handle *trans) +{ + struct btrfs_fs_info *fs_info = trans->fs_info; + struct btrfs_io_context *bioc; + struct btrfs_io_stripe io_stripe = { 0 }; + u64 map_type = RST_TEST_RAID1_TYPE; + u64 logical1 = SZ_1M; + u64 logical2 = SZ_2M; + u64 len = SZ_1M; + int ret; + + bioc = alloc_btrfs_io_context(fs_info, logical1, RST_TEST_NUM_DEVICES); + if (!bioc) { + test_std_err(TEST_ALLOC_IO_CONTEXT); + ret = -ENOMEM; + goto out; + } + + io_stripe.dev = btrfs_device_by_devid(fs_info->fs_devices, 0); + bioc->map_type = map_type; + bioc->size = len; + + /* insert RAID extent 1. */ + for (int i = 0; i < RST_TEST_NUM_DEVICES; i++) { + struct btrfs_io_stripe *stripe = &bioc->stripes[i]; + + stripe->dev = btrfs_device_by_devid(fs_info->fs_devices, i); + if (!stripe->dev) { + test_err("cannot find device with devid %d", i); + ret = -EINVAL; + goto out; + } + + stripe->physical = logical1 + i * SZ_1G; + } + + ret = btrfs_insert_one_raid_extent(trans, bioc); + if (ret) { + test_err("inserting RAID extent failed: %d", ret); + goto out; + } + + bioc->logical = logical2; + /* Insert RAID extent 2, directly adjacent to it. */ + for (int i = 0; i < RST_TEST_NUM_DEVICES; i++) { + struct btrfs_io_stripe *stripe = &bioc->stripes[i]; + + stripe->dev = btrfs_device_by_devid(fs_info->fs_devices, i); + if (!stripe->dev) { + test_err("cannot find device with devid %d", i); + ret = -EINVAL; + goto out; + } + + stripe->physical = logical2 + i * SZ_1G; + } + + ret = btrfs_insert_one_raid_extent(trans, bioc); + if (ret) { + test_err("inserting RAID extent failed: %d", ret); + goto out; + } + + ret = btrfs_delete_raid_extent(trans, logical1 + SZ_512K, SZ_1M); + if (ret) { + test_err("deleting RAID extent [%llu, %llu] failed", + logical1 + SZ_512K, (u64)SZ_1M); + goto out; + } + + /* Verify item 1 is truncated to 512K. */ + ret = btrfs_get_raid_extent_offset(fs_info, logical1, &len, map_type, 0, + &io_stripe); + if (ret) { + test_err("lookup of RAID extent [%llu, %llu] failed", logical1, + logical1 + len); + goto out; + } + + if (io_stripe.physical != logical1) { + test_err("invalid physical address, expected %llu got %llu", + logical1, io_stripe.physical); + ret = -EINVAL; + goto out; + } + + if (len != SZ_512K) { + test_err("invalid stripe length, expected %llu got %llu", + (u64)SZ_512K, len); + ret = -EINVAL; + goto out; + } + + /* Verify item 2's start is moved by 512K. */ + ret = btrfs_get_raid_extent_offset(fs_info, logical2 + SZ_512K, &len, + map_type, 0, &io_stripe); + if (ret) { + test_err("lookup of RAID extent [%llu, %llu] failed", + logical2 + SZ_512K, logical2 + len); + goto out; + } + + if (io_stripe.physical != logical2 + SZ_512K) { + test_err("invalid physical address, expected %llu got %llu", + logical2 + SZ_512K, io_stripe.physical); + ret = -EINVAL; + goto out; + } + + if (len != SZ_512K) { + test_err("invalid stripe length, expected %llu got %llu", + (u64)SZ_512K, len); + ret = -EINVAL; + goto out; + } + + /* Verify there's a hole at [1M+512K, 2M+512K] */ + len = SZ_1M; + ret = btrfs_get_raid_extent_offset(fs_info, logical1 + SZ_512K, &len, + map_type, 0, &io_stripe); + if (ret != -ENODATA) { + test_err("lookup of RAID [%llu, %llu] succeeded, should fail", + logical1 + SZ_512K, logical1 + SZ_512K + len); + goto out; + } + + /* Clean up after us. */ + ret = btrfs_delete_raid_extent(trans, logical1, SZ_512K); + if (ret) + goto out; + + ret = btrfs_delete_raid_extent(trans, logical2 + SZ_512K, SZ_512K); + +out: + btrfs_put_bioc(bioc); + return ret; +} + /* * Test a 64K RST write on a 2 disk RAID1 at a logical address of 1M and then * delete the 1st 32K, making the new start address 1M+32K. @@ -468,6 +611,7 @@ static const test_func_t tests[] = { test_create_update_delete, test_tail_delete, test_front_delete, + test_front_delete_prev_item, }; static int run_test(test_func_t test, u32 sectorsize, u32 nodesize)