From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8E240C433EF for ; Wed, 29 Jun 2022 14:41:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233545AbiF2Ol0 (ORCPT ); Wed, 29 Jun 2022 10:41:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46832 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232481AbiF2OlZ (ORCPT ); Wed, 29 Jun 2022 10:41:25 -0400 Received: from esa4.hgst.iphmx.com (esa4.hgst.iphmx.com [216.71.154.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D75313A734 for ; Wed, 29 Jun 2022 07:41:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1656513682; x=1688049682; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=fUuoIhB/O5nhEZHplhJZf6apHnNDub5hbyfqTcihtLI=; b=CBIBuGSOuH3NJWcxhbd3KH9R6up3inRCmd/zfxQQo0AxMeFDTmj8YDy4 vmF8zxSwUelgT4hrL2EU+BLQOOwBMwdf6Fmd+SB91kbxHuLqc7fYS/3GW eisDg4DQQUDiTygMIPpkgpzdwysnWY5Y06/oLFilRFLiUeZj+szXlb4We u9xTh5+P78cYgOkOiskHIYJGxr3KPQokYJGHiTM0hvyIrHj/ybYsfRFz1 CsDbCSw8JvzwvaIP3Tk2Q16hTyMk0VjHAurluHqwtc/XafN8KlvxpeG+P FvCYO+rIe5w3XR0VM9upa40b9Ipl+qKesq1got7vUNPW9uVdVzXbD5Cwi Q==; X-IronPort-AV: E=Sophos;i="5.92,231,1650902400"; d="scan'208";a="203064882" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 29 Jun 2022 22:41:22 +0800 IronPort-SDR: miGwLkT9+gJThNJTj/KIpZA0YiuN7AAsF0rJxwTfv1yPiw/9CbQBgVmaALrD7ndM5mwFiAOl59 H1F8I5NMmMS3+RaRE+t81ySqHZ8RkK8gfDGn47LzJQEPA04uxX+rQbHYzyr8U5Vvdn0iRyIlbN xXTcK5ADk+1yIN19eFg/4NlI2nakzvYWDQMJzWCoMvJiTRJk4GbUYsTQN6yiJGs3tBtpRNzHus 3hcLFAadeumnvUxXvYfm1uzBJMDP60EoJlNcu7c2jU0yOUqRRihMgiPBSi3uNy2kOPhfHZgnVV j6Ha2brsviMRuGEzzosrlqRM Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 29 Jun 2022 06:59:00 -0700 IronPort-SDR: E3hU26Qcle2HMvVr+7K5GY28DauPegHuFgVak1iXP8VOS92sz0KH4TGU4Y/Yn/qKAcJCZNc20N VCNptoOahgGy6eG5VH3CQMlJTcQibN0YrGDix1g8izHk3FUS5T4F+JWPh2aUFWiLILs1mvdx+l uPXwH6N7KsE5DzUCQ9cQVfcQm7QhWj2WuKlrz66P+qMjj8FlMZE/3z71/HrZcelMDShsB3BuAs poXGbQG6K5nqTVcmKbKdRIaAsi+cBKjsMrFNWXSWwk5vSkS7Bv9yzgL5u5lH22uSraTTbUwZRb U5o= WDCIronportException: Internal Received: from unknown (HELO redsun91.ssa.fujisawa.hgst.com) ([10.149.66.72]) by uls-op-cesaip02.wdc.com with ESMTP; 29 Jun 2022 07:41:21 -0700 From: Johannes Thumshirn To: linux-btrfs@vger.kernel.org Cc: Naohiro Aota , Damien Le Moal , Johannes Thumshirn , Qu Wenruo , Christoph Hellwig , Josef Bacik Subject: [PATCH RFC v2 1/8] btrfs: add raid stripe tree definitions Date: Wed, 29 Jun 2022 07:41:07 -0700 Message-Id: <1ca2b7b2f61b32caae125e4001f83620fa1ddd0c.1656513330.git.johannes.thumshirn@wdc.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Add definitions for the raid-stripe-tree. This tree will hold informatioin about the on-disk layout of the stripes in a RAID set. Signed-off-by: Johannes Thumshirn --- fs/btrfs/ctree.h | 29 +++++++++++++++++++++++++++++ include/uapi/linux/btrfs_tree.h | 17 +++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 4e2569f84aab..18e2f186cb5e 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1906,6 +1906,35 @@ BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); +BTRFS_SETGET_FUNCS(stripe_extent_devid, struct btrfs_stripe_extent, devid, 64); +BTRFS_SETGET_FUNCS(stripe_extent_physical, struct btrfs_stripe_extent, physical, 64); +BTRFS_SETGET_STACK_FUNCS(stack_stripe_extent_devid, struct btrfs_stripe_extent, devid, 64); +BTRFS_SETGET_STACK_FUNCS(stack_stripe_extent_physical, struct btrfs_stripe_extent, physical, 64); + +static inline struct btrfs_stripe_extent *btrfs_stripe_extent_nr( + struct btrfs_dp_stripe *dps, int nr) +{ + unsigned long offset = (unsigned long)dps; + + offset += offsetof(struct btrfs_dp_stripe, extents); + offset += nr * sizeof(struct btrfs_stripe_extent); + return (struct btrfs_stripe_extent *)offset; +} + +static inline u64 btrfs_stripe_extent_devid_nr(const struct extent_buffer *eb, + struct btrfs_dp_stripe *dps, + int nr) +{ + return btrfs_stripe_extent_devid(eb, btrfs_stripe_extent_nr(dps, nr)); +} + +static inline u64 btrfs_stripe_extent_physical_nr(const struct extent_buffer *eb, + struct btrfs_dp_stripe *dps, + int nr) +{ + return btrfs_stripe_extent_physical(eb, btrfs_stripe_extent_nr(dps, nr)); +} + /* struct btrfs_dev_extent */ BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, chunk_tree, 64); diff --git a/include/uapi/linux/btrfs_tree.h b/include/uapi/linux/btrfs_tree.h index d4117152d907..070fc9266821 100644 --- a/include/uapi/linux/btrfs_tree.h +++ b/include/uapi/linux/btrfs_tree.h @@ -56,6 +56,9 @@ /* Holds the block group items for extent tree v2. */ #define BTRFS_BLOCK_GROUP_TREE_OBJECTID 11ULL +/* tracks RAID stripes in block groups. */ +#define BTRFS_RAID_STRIPE_TREE_OBJECTID 12ULL + /* device stats in the device tree */ #define BTRFS_DEV_STATS_OBJECTID 0ULL @@ -264,6 +267,8 @@ */ #define BTRFS_QGROUP_RELATION_KEY 246 +#define BTRFS_RAID_STRIPE_KEY 247 + /* * Obsolete name, see BTRFS_TEMPORARY_ITEM_KEY. */ @@ -488,6 +493,18 @@ struct btrfs_free_space_header { __le64 num_bitmaps; } __attribute__ ((__packed__)); +struct btrfs_stripe_extent { + /* btrfs device-id this raid extent lives on */ + __le64 devid; + /* physical location on disk */ + __le64 physical; +} __attribute__ ((__packed__)); + +struct btrfs_dp_stripe { + /* array of stripe extents this stripe is composed of */ + DECLARE_FLEX_ARRAY(struct btrfs_stripe_extent, extents); +} __attribute__ ((__packed__)); + #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) -- 2.35.3