From patchwork Tue Mar 9 05:01:21 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: 12124099 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=ham 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 E3046C43381 for ; Tue, 9 Mar 2021 05:03:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B463F652B1 for ; Tue, 9 Mar 2021 05:03:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229612AbhCIFC3 (ORCPT ); Tue, 9 Mar 2021 00:02:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229544AbhCIFCB (ORCPT ); Tue, 9 Mar 2021 00:02:01 -0500 Received: from mail-pg1-x52b.google.com (mail-pg1-x52b.google.com [IPv6:2607:f8b0:4864:20::52b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19DE1C06174A; Mon, 8 Mar 2021 21:02:01 -0800 (PST) Received: by mail-pg1-x52b.google.com with SMTP id o38so7946371pgm.9; Mon, 08 Mar 2021 21:02:01 -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=B0JiuyjLxAO766Dbi/Flr0AGUrNxdP+HauXEXRBua5E=; b=OU5vu1eK7cp7vcI7PgqHMwWkuozCniccvj5XN9bv59myNjxMGzd0rh2hs4j4XBc6gE 2u2tgAAkTvkqBUeRZ8DZr22LgRz1COS88/A9aVqcziQU5Y738kG68ik8/dfrsfEG9Iw2 XNmXuTCp74Zp8c9bnNdpI0ws/IOgAhBxy+H9OLZXLOG1iJOW0Fxbh8s2g0XBY1Ht8V8Z vznrcsLIZca/SeNES+YrVQkGpmn6GNOCvXpzvr7xFlipYLv8Dsyy9PIBV8Co+yds68In yS6K25NeJIWFy0KUI1t8gjhJ95DRl5vcDtLE8fkxwkTgwW8NRbuvCKOvlskCNo/DzeyH MD/Q== 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=B0JiuyjLxAO766Dbi/Flr0AGUrNxdP+HauXEXRBua5E=; b=JAJzxggIb8o6bxaDE2rgSeym/hO4JPQrMZr06JIhbU3UbBipawAfdbohrCkyvSoXR2 iJ3gFRNqazL77UMw5IT17OI5Lis5+GqodjG7Zpk//t46RedVC36VLu62y5n3dq/Axaka eFm/QtmcSeUX9UoWgwNsgfCzS99qk/tdZf+OXkmnA2r5c7b5tGcUac2NC5lebKnD3cHl pD8e/kkK15NdIDqxct+glYPUjRdRbXLCWdJIod4VsKq9qWH9KRdM27Eikz/zbSF2YITD 52zDHMDX3QLxiiCSkDRwrr91BdkcqqB51otGNT62pNfSg1Yk7FN32Il6St0AHBqnTMgx exDA== X-Gm-Message-State: AOAM53122oLVEGZGALeM/3vDjtdyimYsbgm13psh7flcRI8f1uIfnXzT gwqeWMmGtqo9EO739UHbrOw/9aFkpdk= X-Google-Smtp-Source: ABdhPJwaDBBGci+GxtxtMJni9odsRo2r9Uz9ea8iTUcIeqV997edTGJIPiIeyz9dUoEliACEIrVhiA== X-Received: by 2002:a63:4f57:: with SMTP id p23mr23417416pgl.281.1615266120530; Mon, 08 Mar 2021 21:02:00 -0800 (PST) Received: from localhost.localdomain ([122.179.125.254]) by smtp.gmail.com with ESMTPSA id a21sm5849577pfh.31.2021.03.08.21.01.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Mar 2021 21:02:00 -0800 (PST) From: Chandan Babu R To: fstests@vger.kernel.org Cc: Chandan Babu R , linux-xfs@vger.kernel.org, djwong@kernel.org Subject: [PATCH V6 10/13] xfs: Check for extent overflow when moving extent from cow to data fork Date: Tue, 9 Mar 2021 10:31:21 +0530 Message-Id: <20210309050124.23797-11-chandanrlinux@gmail.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210309050124.23797-1-chandanrlinux@gmail.com> References: <20210309050124.23797-1-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 writing to/funshare-ing a shared extent. Reviewed-by: Darrick J. Wong Signed-off-by: Chandan Babu R Reviewed-by: Allison Henderson --- tests/xfs/534 | 104 ++++++++++++++++++++++++++++++++++++++++++++++ tests/xfs/534.out | 12 ++++++ tests/xfs/group | 1 + 3 files changed, 117 insertions(+) create mode 100755 tests/xfs/534 create mode 100644 tests/xfs/534.out diff --git a/tests/xfs/534 b/tests/xfs/534 new file mode 100755 index 00000000..06b21f40 --- /dev/null +++ b/tests/xfs/534 @@ -0,0 +1,104 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2021 Chandan Babu R. All Rights Reserved. +# +# FS QA Test 534 +# +# Verify that XFS does not cause inode fork's extent count to overflow when +# writing to a shared extent. +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/reflink +. ./common/inject + +# remove previous $seqres.full before test +rm -f $seqres.full + +# real QA test starts here + +_supported_fs xfs +_require_scratch +_require_scratch_reflink +_require_xfs_debug +_require_xfs_io_command "reflink" +_require_xfs_io_command "funshare" +_require_xfs_io_error_injection "reduce_max_iextents" + +echo "Format and mount fs" +_scratch_mkfs_sized $((512 * 1024 * 1024)) >> $seqres.full +_scratch_mount >> $seqres.full + +bsize=$(_get_block_size $SCRATCH_MNT) + +nr_blks=15 + +srcfile=${SCRATCH_MNT}/srcfile +dstfile=${SCRATCH_MNT}/dstfile + +echo "Inject reduce_max_iextents error tag" +_scratch_inject_error reduce_max_iextents 1 + +echo "Create a \$srcfile having an extent of length $nr_blks blocks" +$XFS_IO_PROG -f -c "pwrite -b $((nr_blks * bsize)) 0 $((nr_blks * bsize))" \ + -c fsync $srcfile >> $seqres.full + +echo "* Write to shared extent" + +echo "Share the extent with \$dstfile" +_reflink $srcfile $dstfile >> $seqres.full + +echo "Buffered write to every other block of \$dstfile's shared extent" +for i in $(seq 1 2 $((nr_blks - 1))); do + $XFS_IO_PROG -f -s -c "pwrite $((i * bsize)) $bsize" $dstfile \ + >> $seqres.full 2>&1 + [[ $? != 0 ]] && break +done + +echo "Verify \$dstfile's extent count" +nextents=$(_xfs_get_fsxattr nextents $dstfile) +if (( $nextents > 10 )); then + echo "Extent count overflow check failed: nextents = $nextents" + exit 1 +fi + +rm $dstfile + +echo "* Funshare shared extent" + +echo "Share the extent with \$dstfile" +_reflink $srcfile $dstfile >> $seqres.full + +echo "Funshare every other block of \$dstfile's shared extent" +for i in $(seq 1 2 $((nr_blks - 1))); do + $XFS_IO_PROG -f -s -c "funshare $((i * bsize)) $bsize" $dstfile \ + >> $seqres.full 2>&1 + [[ $? != 0 ]] && break +done + +echo "Verify \$dstfile's extent count" +nextents=$(_xfs_get_fsxattr nextents $dstfile) +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/534.out b/tests/xfs/534.out new file mode 100644 index 00000000..53288d12 --- /dev/null +++ b/tests/xfs/534.out @@ -0,0 +1,12 @@ +QA output created by 534 +Format and mount fs +Inject reduce_max_iextents error tag +Create a $srcfile having an extent of length 15 blocks +* Write to shared extent +Share the extent with $dstfile +Buffered write to every other block of $dstfile's shared extent +Verify $dstfile's extent count +* Funshare shared extent +Share the extent with $dstfile +Funshare every other block of $dstfile's shared extent +Verify $dstfile's extent count diff --git a/tests/xfs/group b/tests/xfs/group index 3ad47d07..b4f0c777 100644 --- a/tests/xfs/group +++ b/tests/xfs/group @@ -531,3 +531,4 @@ 531 auto quick attr 532 auto quick dir hardlink symlink 533 auto quick +534 auto quick reflink