From patchwork Mon Jan 18 06:20:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chandan Babu R X-Patchwork-Id: 12026617 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21EC3C433E6 for ; Mon, 18 Jan 2021 06:22:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E34B92256F for ; Mon, 18 Jan 2021 06:22:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730994AbhARGVm (ORCPT ); Mon, 18 Jan 2021 01:21:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33796 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731533AbhARGV3 (ORCPT ); Mon, 18 Jan 2021 01:21:29 -0500 Received: from mail-pl1-x62e.google.com (mail-pl1-x62e.google.com [IPv6:2607:f8b0:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E3EF4C061575; Sun, 17 Jan 2021 22:20:48 -0800 (PST) Received: by mail-pl1-x62e.google.com with SMTP id t6so8083761plq.1; Sun, 17 Jan 2021 22:20:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=PiR5XrPCo/8xBvKQBroN3k2T97ViDnryhS0HS238Hls=; b=ipM311vg29EgSI2l/OoABjfl4peqVJUfi/nB6hE5azNYH4UZ5H9Ijo28RF6p4RwkQW QO2Y06tBSkwBJBCNI9oxNK2lRzG0oMhkHxWMbLPDS6NiZWwtgGaVzCvRnQecMIXHw22m Kru8li2oN6SJdQ6e1uL2BlkyuOSOmaRw+cQFVyrFmLS5yyM4TI4qmhIEEFFLnjnFrT1j fGZ68a8fEp7gKGFI7jxY6YOxPwkzWSuVCj7WoK4K7bPT8V7a6ccz2WlFpBks6TW0dmHm m5KENSXd/gGpSFfImerbzKpf61eWatDrS6AtQT7yfTJi1c1WBYJqx1jrjsaMrOhmtu3R dfbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=PiR5XrPCo/8xBvKQBroN3k2T97ViDnryhS0HS238Hls=; b=CKhsAebLfnGrjKbHj6PIp+94iwZ7iWWEWQhQBM26+g0ZUHb67a6rPpRCkK4YXChw7Y CIUiPV6zNgRlf7YYskP4sPwMJw+h1imHXhlYyH4vHqpqd9IAbFkUxStuAx81IQGSjHlp oJCdLrf+U6kF6c0/QNEvmhZWlZz9ExBGX2ParXpYZx1UsvUYt/P0q6bMg6vXq1iEhU09 ngdg7IA0feCI4xJzhoadf82de6hMtI9vPVS/XC27O2E/ASQeAasZmW6bTmsWdXSvn2h5 evWZBaiFo6wDArv51tReFt5PA7VGBIep5QZcNMkr9XGs0+TOnFDf8hVFLUe2Vil91cK2 c3Vg== X-Gm-Message-State: AOAM533A9GDf/hSKAsvpavNsqd9TeSSa4LmPOpTrOY+Cyct4eXseS4BL LIb55EDPaq1HcjPUnp/cg2jI9c8tFfI= X-Google-Smtp-Source: ABdhPJyIck67e6xUi/cLcmkT6qxvBrB0v1egA4gzaSAOlmQQbYoVTc3F/LjcdwiFlLzpiE/TvMbQ1g== X-Received: by 2002:a17:90a:4cc5:: with SMTP id k63mr24412960pjh.202.1610950848316; Sun, 17 Jan 2021 22:20:48 -0800 (PST) Received: from localhost.localdomain ([122.179.96.31]) by smtp.gmail.com with ESMTPSA id t1sm14608423pfq.154.2021.01.17.22.20.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 17 Jan 2021 22:20:47 -0800 (PST) From: Chandan Babu R To: fstests@vger.kernel.org Cc: Chandan Babu R , linux-xfs@vger.kernel.org, darrick.wong@oracle.com, djwong@kernel.org Subject: [PATCH V4 02/11] xfs: Check for extent overflow when trivally adding a new extent Date: Mon, 18 Jan 2021 11:50:13 +0530 Message-Id: <20210118062022.15069-3-chandanrlinux@gmail.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210118062022.15069-1-chandanrlinux@gmail.com> References: <20210118062022.15069-1-chandanrlinux@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org This test verifies that XFS does not cause inode fork's extent count to overflow when adding a single extent while there's no possibility of splitting an existing mapping. Signed-off-by: Chandan Babu R --- tests/xfs/522 | 173 ++++++++++++++++++++++++++++++++++++++++++++++ tests/xfs/522.out | 20 ++++++ tests/xfs/group | 1 + 3 files changed, 194 insertions(+) create mode 100755 tests/xfs/522 create mode 100644 tests/xfs/522.out diff --git a/tests/xfs/522 b/tests/xfs/522 new file mode 100755 index 00000000..33f0591e --- /dev/null +++ b/tests/xfs/522 @@ -0,0 +1,173 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2020 Chandan Babu R. All Rights Reserved. +# +# FS QA Test 522 +# +# Verify that XFS does not cause inode fork's extent count to overflow when +# adding a single extent while there's no possibility of splitting an existing +# mapping. + +seq=`basename $0` +seqres=$RESULT_DIR/$seq +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_cleanup() +{ + cd / + rm -f $tmp.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/quota +. ./common/inject +. ./common/populate + +# remove previous $seqres.full before test +rm -f $seqres.full + +# real QA test starts here + +_supported_fs xfs +_require_scratch +_require_xfs_quota +_require_xfs_debug +_require_test_program "punch-alternating" +_require_xfs_io_command "falloc" +_require_xfs_io_error_injection "reduce_max_iextents" +_require_xfs_io_error_injection "bmap_alloc_minlen_extent" + +echo "Format and mount fs" +_scratch_mkfs_sized $((512 * 1024 * 1024)) >> $seqres.full +_scratch_mount -o uquota >> $seqres.full + +bsize=$(_get_file_block_size $SCRATCH_MNT) + +echo "* Delalloc to written extent conversion" + +testfile=$SCRATCH_MNT/testfile + +echo "Inject reduce_max_iextents error tag" +_scratch_inject_error reduce_max_iextents 1 + +nr_blks=$((15 * 2)) + +echo "Create fragmented file" +for i in $(seq 0 2 $((nr_blks - 1))); do + $XFS_IO_PROG -f -s -c "pwrite $((i * bsize)) $bsize" $testfile \ + >> $seqres.full 2>&1 + [[ $? != 0 ]] && break +done + +echo "Verify \$testfile's extent count" + +nextents=$($XFS_IO_PROG -f -c 'stat' $testfile | grep -i nextents) +nextents=${nextents##fsxattr.nextents = } +if (( $nextents > 10 )); then + echo "Extent count overflow check failed: nextents = $nextents" + exit 1 +fi + +rm $testfile + +echo "* Fallocate unwritten extents" + +echo "Fallocate fragmented file" +for i in $(seq 0 2 $((nr_blks - 1))); do + $XFS_IO_PROG -f -c "falloc $((i * bsize)) $bsize" $testfile \ + >> $seqres.full 2>&1 + [[ $? != 0 ]] && break +done + +echo "Verify \$testfile's extent count" + +nextents=$($XFS_IO_PROG -f -c 'stat' $testfile | grep -i nextents) +nextents=${nextents##fsxattr.nextents = } +if (( $nextents > 10 )); then + echo "Extent count overflow check failed: nextents = $nextents" + exit 1 +fi + +rm $testfile + +echo "* Directio write" + +echo "Create fragmented file via directio writes" +for i in $(seq 0 2 $((nr_blks - 1))); do + $XFS_IO_PROG -d -s -f -c "pwrite $((i * bsize)) $bsize" $testfile \ + >> $seqres.full 2>&1 + [[ $? != 0 ]] && break +done + +echo "Verify \$testfile's extent count" + +nextents=$($XFS_IO_PROG -f -c 'stat' $testfile | grep -i nextents) +nextents=${nextents##fsxattr.nextents = } +if (( $nextents > 10 )); then + echo "Extent count overflow check failed: nextents = $nextents" + exit 1 +fi + +rm $testfile + +echo "* Extend quota inodes" + +echo "Disable reduce_max_iextents error tag" +_scratch_inject_error reduce_max_iextents 0 + +echo "Consume free space" +fillerdir=$SCRATCH_MNT/fillerdir +nr_free_blks=$(stat -f -c '%f' $SCRATCH_MNT) +nr_free_blks=$((nr_free_blks * 90 / 100)) + +_fill_fs $((bsize * nr_free_blks)) $fillerdir $bsize 0 >> $seqres.full 2>&1 + +echo "Create fragmented filesystem" +for dentry in $(ls -1 $fillerdir/); do + $here/src/punch-alternating $fillerdir/$dentry >> $seqres.full +done + +echo "Inject reduce_max_iextents error tag" +_scratch_inject_error reduce_max_iextents 1 + +echo "Inject bmap_alloc_minlen_extent error tag" +_scratch_inject_error bmap_alloc_minlen_extent 1 + +nr_blks=20 + +# This is a rough calculation; It doesn't take block headers into +# consideration. +# gdb -batch vmlinux -ex 'print sizeof(struct xfs_dqblk)' +# $1 = 136 +nr_quotas_per_block=$((bsize / 136)) +nr_quotas=$((nr_quotas_per_block * nr_blks)) + +echo "Extend uquota file" +for i in $(seq 0 $nr_quotas_per_block $nr_quotas); do + chown $i $testfile >> $seqres.full 2>&1 + [[ $? != 0 ]] && break +done + +_scratch_unmount >> $seqres.full + +echo "Verify uquota inode's extent count" +uquotino=$(_scratch_xfs_db -c sb -c "print uquotino") +uquotino=${uquotino##uquotino = } + +nextents=$(_scratch_get_iext_count $uquotino data || \ + _fail "Unable to obtain inode fork's extent count") +if (( $nextents > 10 )); then + echo "Extent count overflow check failed: nextents = $nextents" + exit 1 +fi + +# success, all done +status=0 +exit diff --git a/tests/xfs/522.out b/tests/xfs/522.out new file mode 100644 index 00000000..debeb004 --- /dev/null +++ b/tests/xfs/522.out @@ -0,0 +1,20 @@ +QA output created by 522 +Format and mount fs +* Delalloc to written extent conversion +Inject reduce_max_iextents error tag +Create fragmented file +Verify $testfile's extent count +* Fallocate unwritten extents +Fallocate fragmented file +Verify $testfile's extent count +* Directio write +Create fragmented file via directio writes +Verify $testfile's extent count +* Extend quota inodes +Disable reduce_max_iextents error tag +Consume free space +Create fragmented filesystem +Inject reduce_max_iextents error tag +Inject bmap_alloc_minlen_extent error tag +Extend uquota file +Verify uquota inode's extent count diff --git a/tests/xfs/group b/tests/xfs/group index b89c0a4e..1831f0b5 100644 --- a/tests/xfs/group +++ b/tests/xfs/group @@ -519,3 +519,4 @@ 519 auto quick reflink 520 auto quick reflink 521 auto quick realtime growfs +522 auto quick quota