From patchwork Sun Dec 31 22:18:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 13507846 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A642BC127 for ; Sun, 31 Dec 2023 22:18:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="g9EfpqPQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 31098C433C8; Sun, 31 Dec 2023 22:18:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1704061139; bh=tBJIALgruj2WLu7Im/GQs9Yh0uHbEHBty/o6SY6FNzE=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=g9EfpqPQpvePjP6JATBVhScMLChqYcoSmu9e/Q2XaHtjm5+rRzX9hYYpeaAhj1L2z YaqQ7B9QDq/vSc2eRcs7LwPNZ2BnNPosJRw37c70y7rRtTTAz3/R4kAYCYTwzvhz7x jzIi/mq+KTZjv721q3a8JRibPvkh30UsV6zyabZMxSKeqk6m6Ukh01fy3XGIs4+ZgF qEkxDVszGZXjqY5jHHy21Ap24GQSBnMlTtNm7To1szRr5xLAwwFkTO57zqP9dK32k4 VRQaCTHBSaK5uG2aFWJRbSfHrKtG4WQbPe5l0VuW0KnKu0eE6teTywJ7LOnHHWKPwB CfZbhROJ+q1AA== Date: Sun, 31 Dec 2023 14:18:58 -0800 Subject: [PATCH 3/6] xfs_repair: verify on-disk rmap btrees with in-memory btree data From: "Darrick J. Wong" To: djwong@kernel.org, cem@kernel.org Cc: linux-xfs@vger.kernel.org Message-ID: <170404993628.1794934.1646668124205230327.stgit@frogsfrogsfrogs> In-Reply-To: <170404993583.1794934.17692508703738477619.stgit@frogsfrogsfrogs> References: <170404993583.1794934.17692508703738477619.stgit@frogsfrogsfrogs> User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Darrick J. Wong Check the on-disk reverse mappings with the observations we've recorded in the in-memory btree during the filesystem walk. Signed-off-by: Darrick J. Wong --- repair/rmap.c | 58 +++++++++++++++++++++++++++------------------------------ 1 file changed, 27 insertions(+), 31 deletions(-) diff --git a/repair/rmap.c b/repair/rmap.c index 53b8ac6fcf9..785431b94d7 100644 --- a/repair/rmap.c +++ b/repair/rmap.c @@ -1197,11 +1197,11 @@ rmaps_verify_btree( struct xfs_mount *mp, xfs_agnumber_t agno) { + struct rmap_mem_cur rm_cur; + struct xfs_rmap_irec rm_rec; struct xfs_rmap_irec tmp; - struct xfs_slab_cursor *rm_cur; struct xfs_btree_cur *bt_cur = NULL; struct xfs_buf *agbp = NULL; - struct xfs_rmap_irec *rm_rec; struct xfs_perag *pag = NULL; int have; int error; @@ -1214,8 +1214,8 @@ rmaps_verify_btree( return; } - /* Create cursors to refcount structures */ - error = rmap_init_cursor(agno, &rm_cur); + /* Create cursors to rmap structures */ + error = rmap_init_mem_cursor(mp, NULL, agno, &rm_cur); if (error) { do_warn(_("Not enough memory to check reverse mappings.\n")); return; @@ -1238,13 +1238,12 @@ rmaps_verify_btree( goto err_agf; } - rm_rec = pop_slab_cursor(rm_cur); - while (rm_rec) { - error = rmap_lookup(bt_cur, rm_rec, &tmp, &have); + while ((error = rmap_get_mem_rec(&rm_cur, &rm_rec)) == 1) { + error = rmap_lookup(bt_cur, &rm_rec, &tmp, &have); if (error) { do_warn( _("Could not read reverse-mapping record for (%u/%u).\n"), - agno, rm_rec->rm_startblock); + agno, rm_rec.rm_startblock); goto err_cur; } @@ -1254,13 +1253,13 @@ _("Could not read reverse-mapping record for (%u/%u).\n"), * match the observed rmap. */ if (xfs_has_reflink(bt_cur->bc_mp) && - (!have || !rmap_is_good(rm_rec, &tmp))) { - error = rmap_lookup_overlapped(bt_cur, rm_rec, + (!have || !rmap_is_good(&rm_rec, &tmp))) { + error = rmap_lookup_overlapped(bt_cur, &rm_rec, &tmp, &have); if (error) { do_warn( _("Could not read reverse-mapping record for (%u/%u).\n"), - agno, rm_rec->rm_startblock); + agno, rm_rec.rm_startblock); goto err_cur; } } @@ -1268,21 +1267,21 @@ _("Could not read reverse-mapping record for (%u/%u).\n"), do_warn( _("Missing reverse-mapping record for (%u/%u) %slen %u owner %"PRId64" \ %s%soff %"PRIu64"\n"), - agno, rm_rec->rm_startblock, - (rm_rec->rm_flags & XFS_RMAP_UNWRITTEN) ? + agno, rm_rec.rm_startblock, + (rm_rec.rm_flags & XFS_RMAP_UNWRITTEN) ? _("unwritten ") : "", - rm_rec->rm_blockcount, - rm_rec->rm_owner, - (rm_rec->rm_flags & XFS_RMAP_ATTR_FORK) ? + rm_rec.rm_blockcount, + rm_rec.rm_owner, + (rm_rec.rm_flags & XFS_RMAP_ATTR_FORK) ? _("attr ") : "", - (rm_rec->rm_flags & XFS_RMAP_BMBT_BLOCK) ? + (rm_rec.rm_flags & XFS_RMAP_BMBT_BLOCK) ? _("bmbt ") : "", - rm_rec->rm_offset); - goto next_loop; + rm_rec.rm_offset); + continue; } /* Compare each refcount observation against the btree's */ - if (!rmap_is_good(rm_rec, &tmp)) { + if (!rmap_is_good(&rm_rec, &tmp)) { do_warn( _("Incorrect reverse-mapping: saw (%u/%u) %slen %u owner %"PRId64" %s%soff \ %"PRIu64"; should be (%u/%u) %slen %u owner %"PRId64" %s%soff %"PRIu64"\n"), @@ -1296,20 +1295,17 @@ _("Incorrect reverse-mapping: saw (%u/%u) %slen %u owner %"PRId64" %s%soff \ (tmp.rm_flags & XFS_RMAP_BMBT_BLOCK) ? _("bmbt ") : "", tmp.rm_offset, - agno, rm_rec->rm_startblock, - (rm_rec->rm_flags & XFS_RMAP_UNWRITTEN) ? + agno, rm_rec.rm_startblock, + (rm_rec.rm_flags & XFS_RMAP_UNWRITTEN) ? _("unwritten ") : "", - rm_rec->rm_blockcount, - rm_rec->rm_owner, - (rm_rec->rm_flags & XFS_RMAP_ATTR_FORK) ? + rm_rec.rm_blockcount, + rm_rec.rm_owner, + (rm_rec.rm_flags & XFS_RMAP_ATTR_FORK) ? _("attr ") : "", - (rm_rec->rm_flags & XFS_RMAP_BMBT_BLOCK) ? + (rm_rec.rm_flags & XFS_RMAP_BMBT_BLOCK) ? _("bmbt ") : "", - rm_rec->rm_offset); - goto next_loop; + rm_rec.rm_offset); } -next_loop: - rm_rec = pop_slab_cursor(rm_cur); } err_cur: @@ -1318,7 +1314,7 @@ _("Incorrect reverse-mapping: saw (%u/%u) %slen %u owner %"PRId64" %s%soff \ libxfs_buf_relse(agbp); err_pag: libxfs_perag_put(pag); - free_slab_cursor(&rm_cur); + rmap_free_mem_cursor(NULL, &rm_cur, error); } /*