From patchwork Thu Nov 25 07:47:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shiyang Ruan X-Patchwork-Id: 12638565 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 67ADDC433EF for ; Thu, 25 Nov 2021 07:50:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234057AbhKYHxW (ORCPT ); Thu, 25 Nov 2021 02:53:22 -0500 Received: from mail.cn.fujitsu.com ([183.91.158.132]:17619 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234555AbhKYHvR (ORCPT ); Thu, 25 Nov 2021 02:51:17 -0500 IronPort-Data: A9a23:bc+7R6uWDcYAyQG/oNeDBy/i7OfnVEpcMUV32f8akzHdYEJGY0x3mmZJUWGCO/qOa2fwc4h1O47k/EgC75HVydNnTAJsri5gHilAwSbnLY7Hdx+vZUt+DSFioHpPtpxYMp+ZRCwNZie0SiyFb/6x8hGQ6YnSHuClUbeeZ3goLeNZYHxJZSxLyrdRbrFA0YDR7zOl4bsekuWHULOX82cc3lE8t8pvnChSUMHa41v0iLCRicdj5zcyn1FNZH4WyDrYw3HQGuG4FcbiLwrPIS3Qw4/Xw/stIovNfrfTeUtMTKPQPBSVlzxdXK3Kbhpq/3R0i/hkcqFHLxo/ZzahxridzP1XqJW2UhZvMKvXhMwTThtZDzpje6ZB/dcrJFDm6JPDnhWYLCCEL/JGSRte0Zcj0uhsHWxV6ecwNj8AdFaAiviwzbb9TfNj7vnPhuGD0Jg34ykmlG+GS619B82rfkkD3vcAtB9YuyyENaq2ixIlVAdS IronPort-HdrOrdr: A9a23:LtkaN69uYvXtXhm7cVxuk+D2I+orL9Y04lQ7vn2ZhyY0TiTS/Pre5cjztCWE7wr5N0tQ++xoVJPvfZr8z+8M3WBzB8bHYOCFghrMEGlihbGSuAEIcheWnoVgPMxbAstD4arLYWSS4/ya3ODDKbwdKaG8gcaVbLvlvg1QpHpRBp2JUmxCZTqmLg== X-IronPort-AV: E=Sophos;i="5.87,262,1631548800"; d="scan'208";a="117890673" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 25 Nov 2021 15:47:59 +0800 Received: from G08CNEXMBPEKD06.g08.fujitsu.local (unknown [10.167.33.206]) by cn.fujitsu.com (Postfix) with ESMTP id 548204D138C6 for ; Thu, 25 Nov 2021 15:47:57 +0800 (CST) Received: from G08CNEXJMPEKD02.g08.fujitsu.local (10.167.33.202) by G08CNEXMBPEKD06.g08.fujitsu.local (10.167.33.206) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Thu, 25 Nov 2021 15:47:56 +0800 Received: from G08CNEXCHPEKD09.g08.fujitsu.local (10.167.33.85) by G08CNEXJMPEKD02.g08.fujitsu.local (10.167.33.202) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Thu, 25 Nov 2021 15:47:57 +0800 Received: from irides.mr.mr.mr (10.167.225.141) by G08CNEXCHPEKD09.g08.fujitsu.local (10.167.33.209) with Microsoft SMTP Server id 15.0.1497.23 via Frontend Transport; Thu, 25 Nov 2021 15:47:55 +0800 From: Shiyang Ruan To: Subject: [PATCH v2 01/16] generic: add mmap CoW test for ranges of two shared files Date: Thu, 25 Nov 2021 15:47:37 +0800 Message-ID: <20211125074752.274176-2-ruansy.fnst@fujitsu.com> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211125074752.274176-1-ruansy.fnst@fujitsu.com> References: <20211125074752.274176-1-ruansy.fnst@fujitsu.com> MIME-Version: 1.0 X-yoursite-MailScanner-ID: 548204D138C6.ADBB5 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: ruansy.fnst@fujitsu.com Precedence: bulk List-ID: X-Mailing-List: fstests@vger.kernel.org Ensuring that copy on write in mmap mode works when the CoW range originally covers multiple extents. (MMAP version of generic/185,183) Signed-off-by: Shiyang Ruan Reviewed-by: Darrick J. Wong --- tests/generic/900 | 69 +++++++++++++++++++++++++++++++++++++++++++ tests/generic/900.out | 14 +++++++++ 2 files changed, 83 insertions(+) create mode 100755 tests/generic/900 create mode 100644 tests/generic/900.out diff --git a/tests/generic/900 b/tests/generic/900 new file mode 100755 index 00000000..de76cd00 --- /dev/null +++ b/tests/generic/900 @@ -0,0 +1,69 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# FS QA Test No. 900 +# +# Ensuring that copy on write in mmap mode works when the CoW +# range originally covers multiple extents. (MMAP version of generic/185,183) +# - Create two files +# - Reflink the odd blocks of the first file into a third file. +# - Reflink the even blocks of the second file into the third file. +# - mmap CoW across the halfway mark. +# - Check that the files are now different where we say they're different. +# +. ./common/preamble +_begin_fstest auto quick clone + +# Import common functions. +. ./common/filter +. ./common/reflink + +# real QA test starts here +_require_scratch_reflink + +echo "Format and mount" +_scratch_mkfs > $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 + +testdir=$SCRATCH_MNT/test-$seq +mkdir $testdir + +echo "Create the original files" +blksz=65536 +nr=64 +filesize=$((blksz * nr)) +_pwrite_byte 0x61 0 $filesize $testdir/file1 >> $seqres.full +_pwrite_byte 0x62 0 $filesize $testdir/file2 >> $seqres.full +seq 0 2 $((nr-1)) | while read f; do + _reflink_range $testdir/file1 $((blksz * f)) $testdir/file3 $((blksz * f)) $blksz >> $seqres.full + _pwrite_byte 0x61 $((blksz * f)) $blksz $testdir/file3.chk >> $seqres.full +done +seq 1 2 $((nr-1)) | while read f; do + _reflink_range $testdir/file2 $((blksz * f)) $testdir/file3 $((blksz * f)) $blksz >> $seqres.full + _pwrite_byte 0x62 $((blksz * f)) $blksz $testdir/file3.chk >> $seqres.full +done +_scratch_cycle_mount + +echo "Compare files" +md5sum $testdir/file1 | _filter_scratch +md5sum $testdir/file2 | _filter_scratch +md5sum $testdir/file3 | _filter_scratch +md5sum $testdir/file3.chk | _filter_scratch + +echo "mmap CoW across the transition" +cowoff=$((filesize / 4)) +cowsz=$((filesize / 2)) +mmapsz=$((cowoff + cowsz)) +_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file3 >> $seqres.full +_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file3.chk >> $seqres.full +_scratch_cycle_mount + +echo "Compare files" +md5sum $testdir/file1 | _filter_scratch +md5sum $testdir/file2 | _filter_scratch +md5sum $testdir/file3 | _filter_scratch +md5sum $testdir/file3.chk | _filter_scratch + +# success, all done +status=0 +exit diff --git a/tests/generic/900.out b/tests/generic/900.out new file mode 100644 index 00000000..b2569ab0 --- /dev/null +++ b/tests/generic/900.out @@ -0,0 +1,14 @@ +QA output created by 900 +Format and mount +Create the original files +Compare files +bdbcf02ee0aa977795a79d25fcfdccb1 SCRATCH_MNT/test-900/file1 +b83f9394092e15bdcda585cd8e776dc6 SCRATCH_MNT/test-900/file2 +d3959a68638c50af07f0258e032cb554 SCRATCH_MNT/test-900/file3 +d3959a68638c50af07f0258e032cb554 SCRATCH_MNT/test-900/file3.chk +mmap CoW across the transition +Compare files +bdbcf02ee0aa977795a79d25fcfdccb1 SCRATCH_MNT/test-900/file1 +b83f9394092e15bdcda585cd8e776dc6 SCRATCH_MNT/test-900/file2 +55968a95dfc0120df4e8485576514320 SCRATCH_MNT/test-900/file3 +55968a95dfc0120df4e8485576514320 SCRATCH_MNT/test-900/file3.chk