From ef91f0027bd080444183db35058b29657fab9f2d Mon Sep 17 00:00:00 2001 From: Shiyang Ruan Date: Tue, 14 Dec 2021 16:19:03 +0800 Subject: [PATCH] generic: add mmap CoW test for delalloc&destination extents Ensuring that copy on write in mmap mode works when the CoW range originally covers multiple extents, some delalloc, some not. (MMAP version of generic/195,194) Signed-off-by: Shiyang Ruan Reviewed-by: Eryu Guan Signed-off-by: Eryu Guan --- tests/generic/661 | 62 +++++++++++++++++++++++++++++++++++++++++++ tests/generic/661.out | 12 +++++++++ 2 files changed, 74 insertions(+) create mode 100755 tests/generic/661 create mode 100644 tests/generic/661.out diff --git a/tests/generic/661 b/tests/generic/661 new file mode 100755 index 00000000..295a6a8d --- /dev/null +++ b/tests/generic/661 @@ -0,0 +1,62 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# FS QA Test No. 661 +# +# Ensuring that copy on write in mmap mode works when the CoW +# range originally covers multiple extents, some delalloc, some not. +# (MMAP version of generic/195,194) +# - Create a file. +# - Reflink the odd blocks of the first file into the second file. +# - Buffered write the even blocks of the second file. +# - mmap CoW across the halfway mark, starting with the unwritten extent. +# - 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 +_require_scratch_delalloc +_require_xfs_io_command "falloc" + +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)) +_weave_reflink_holes $blksz $nr $testdir/file1 $testdir/file3 >> $seqres.full +_scratch_cycle_mount + +echo "Compare files" +md5sum $testdir/file1 | _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)) +_weave_reflink_holes_delalloc $blksz $nr $testdir/file3 >> $seqres.full +mmapsz=$((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/file3 | _filter_scratch +md5sum $testdir/file3.chk | _filter_scratch + +# success, all done +status=0 +exit diff --git a/tests/generic/661.out b/tests/generic/661.out new file mode 100644 index 00000000..84a1c679 --- /dev/null +++ b/tests/generic/661.out @@ -0,0 +1,12 @@ +QA output created by 661 +Format and mount +Create the original files +Compare files +bdbcf02ee0aa977795a79d25fcfdccb1 SCRATCH_MNT/test-661/file1 +fa50dba51826899c372464a153cb2117 SCRATCH_MNT/test-661/file3 +fa50dba51826899c372464a153cb2117 SCRATCH_MNT/test-661/file3.chk +mmap CoW across the transition +Compare files +bdbcf02ee0aa977795a79d25fcfdccb1 SCRATCH_MNT/test-661/file1 +55968a95dfc0120df4e8485576514320 SCRATCH_MNT/test-661/file3 +55968a95dfc0120df4e8485576514320 SCRATCH_MNT/test-661/file3.chk -- 2.30.2