Ensuring that copy on write in mmap mode to the source file when the CoW range covers regular unshared and regular shared blocks. (MMAP version of generic/284,287) Signed-off-by: Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx> --- tests/generic/915 | 60 +++++++++++++++++++++++++++++++++++++++++++ tests/generic/915.out | 12 +++++++++ 2 files changed, 72 insertions(+) create mode 100755 tests/generic/915 create mode 100644 tests/generic/915.out diff --git a/tests/generic/915 b/tests/generic/915 new file mode 100755 index 00000000..2829a190 --- /dev/null +++ b/tests/generic/915 @@ -0,0 +1,60 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# FS QA Test No. xxx +# +# Ensuring that copy on write in mmap mode to the source file when the +# CoW range covers regular unshared and regular shared blocks. +# (MMAP version of generic/284,287) +# - Create two files. +# - Reflink the odd blocks of the first file into the second file. +# - mmap CoW the first file across the halfway mark, starting with the +# regular 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_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)) +_sweave_reflink_regular $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 $testdir/file1.chk | _filter_scratch + +echo "mmap CoW across the transition" +cowoff=$((filesize / 4)) +cowsz=$((filesize / 2)) +mmapsz=$((cowoff + cowsz)) +_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file1 >> $seqres.full +_mwrite_byte 0x63 $cowoff $cowsz $mmapsz $testdir/file1.chk >> $seqres.full +_scratch_cycle_mount + +echo "Compare files" +md5sum $testdir/file1 | _filter_scratch +md5sum $testdir/file3 | _filter_scratch +md5sum $testdir/file1.chk | _filter_scratch + +# success, all done +status=0 +exit diff --git a/tests/generic/915.out b/tests/generic/915.out new file mode 100644 index 00000000..178fc665 --- /dev/null +++ b/tests/generic/915.out @@ -0,0 +1,12 @@ +QA output created by 915 +Format and mount +Create the original files +Compare files +bdbcf02ee0aa977795a79d25fcfdccb1 SCRATCH_MNT/test-915/file1 +ce2023f765eba19677517c511886d5c9 SCRATCH_MNT/test-915/file3 +bdbcf02ee0aa977795a79d25fcfdccb1 SCRATCH_MNT/test-915/file1.chk +mmap CoW across the transition +Compare files +2dc2b131303b2f70ddb480778caac8b7 SCRATCH_MNT/test-915/file1 +ce2023f765eba19677517c511886d5c9 SCRATCH_MNT/test-915/file3 +2dc2b131303b2f70ddb480778caac8b7 SCRATCH_MNT/test-915/file1.chk -- 2.33.0
