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| author | Shiyang Ruan <ruansy.fnst@fujitsu.com> | 2021-12-14 16:18:58 +0800 |
|---|---|---|
| committer | Eryu Guan <guaneryu@gmail.com> | 2021-12-25 20:56:00 +0800 |
| commit | 924922639321433722deb771ca26d1a9962f38a2 (patch) | |
| tree | e42baaa677b1b51d31f69e57b93da8a691a0b93d | |
| parent | 92b9c0dedace427e5b4d176113f13c83499855cd (diff) | |
| download | xfstests-dev-924922639321433722deb771ca26d1a9962f38a2.tar.gz | |
generic: add mmap CoW test for ranges of two shared files
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 <ruansy.fnst@fujitsu.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
| -rwxr-xr-x | tests/generic/657 | 69 | ||||
| -rw-r--r-- | tests/generic/657.out | 14 |
2 files changed, 83 insertions, 0 deletions
diff --git a/tests/generic/657 b/tests/generic/657 new file mode 100755 index 0000000000..e0fecd544c --- /dev/null +++ b/tests/generic/657 @@ -0,0 +1,69 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# FS QA Test No. 657 +# +# 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/657.out b/tests/generic/657.out new file mode 100644 index 0000000000..4534c2625e --- /dev/null +++ b/tests/generic/657.out @@ -0,0 +1,14 @@ +QA output created by 657 +Format and mount +Create the original files +Compare files +bdbcf02ee0aa977795a79d25fcfdccb1 SCRATCH_MNT/test-657/file1 +b83f9394092e15bdcda585cd8e776dc6 SCRATCH_MNT/test-657/file2 +d3959a68638c50af07f0258e032cb554 SCRATCH_MNT/test-657/file3 +d3959a68638c50af07f0258e032cb554 SCRATCH_MNT/test-657/file3.chk +mmap CoW across the transition +Compare files +bdbcf02ee0aa977795a79d25fcfdccb1 SCRATCH_MNT/test-657/file1 +b83f9394092e15bdcda585cd8e776dc6 SCRATCH_MNT/test-657/file2 +55968a95dfc0120df4e8485576514320 SCRATCH_MNT/test-657/file3 +55968a95dfc0120df4e8485576514320 SCRATCH_MNT/test-657/file3.chk |